Chapter 3

Shortcodes

Hugo uses Markdown for its simple content format. However, there are a lot of things that Markdown doesn’t support well. You could use pure HTML to expand possibilities.

But this happens to be a bad idea. Everyone uses Markdown because it’s pure and simple to read even non-rendered. You should avoid HTML to keep it as simple as possible.

To avoid this limitations, Hugo created shortcodes. A shortcode is a simple snippet inside a page.

The Relearn theme provides multiple shortcodes on top of existing ones.

Attachments

List of files attached to a page

Button

Clickable buttons

Children

List the child pages of a page

Expand

Expandable/collapsible sections of text

Include

Displays content from other files

Math

Beautiful math and chemical formulae

Mermaid

Generate diagrams and flowcharts from text

Notice

Disclaimers to help you structure your page

Site param

Get value of site params

Swagger

UI for your Swagger / OpenAPI Specifications

Tabbed views

Show content in tabbed views

Subsections of Shortcodes

Attachments

The attachments shortcode displays a list of files attached to a page with adjustable color, title and icon.

Usage

While the examples are using shortcodes with named parameter you are free to also call this shortcode from your own partials.

{{% attachments sort="asc" /%}}
{{ partial "shortcodes/attachments.html" (dict
  "context" .
  "sort" "asc"
)}}

The shortcode lists files found in a specific folder.

Currently, it supports two implementations for pages

  1. If your page is a Markdown file, attachments must be placed in a folder named like your page and ending with .files.

    • content
      • _index.md
      • page.files
        • attachment.pdf
      • page.md
  2. If your page is a folder, attachments must be placed in a nested files folder.

    • content
      • _index.md
      • page
        • index.md
        • files
          • attachment.pdf

Be aware that if you use a multilingual website, you will need to have as many folders as languages.

Parameter

Name Default Notes
style transparent The color scheme used to highlight the box content.

- by severity: info, note, tip, warning<nd color: primary, secondary
- by color: blue, green, grey, orange, red
- by special color: default,t`
title see notes Arbitrary text for the box title. Depending on the style there may be a default title. Any given value will overwault.

- for severity styles: the matching title for the severity
- for all other colors: Attachments

If you wa you have to set this parameter to " " (a non empty string filled with spaces)
icon see notes Font Awesome icon name set to the left of the title. Depending le** there may be a default icon. Any given value will overwrite the default.

- for severity styles: a nice matching iseverity
- for all other colors: paperclip

If you want no icon, you have to set this parameter to " " (a non empty d with spaces)
sort asc Sorting the output in ascending or descending order.
pattern .* A regular expressions, used to filter the attachments by file name. For example:

- to match a file suffix of ‘jpg’, use .*jpg (not *.jpg)
- to match file names ending in jpg or png, use .*(jpg|png)

Examples

Custom Title, List of Attachments Ending in pdf or mp4

{{% attachments title="Related files" pattern=".*(pdf|mp4)" /%}}

Info Styled Box, Descending Sort Order

{{% attachments style="info" sort="desc" /%}}

Style and Icons

For further examples for style, title and icon, see the notice shortcode documentation. The parameter are working the same way for both shortcodes, besides having different defaults.

Button

The button shortcode displays a clickable button with adjustable color, title and icon.

Get Hugo Get Hugo

Usage

While the examples are using shortcodes with named parameter you are free to also call this shortcode from your own partials.

{{% button href="https://gohugo.io/" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="warning" icon="dragon" %}}Get Hugo{{% /button %}}
{{ partial "shortcodes/button.html" (dict
    "context" .
    "href" "https://gohugo.io/"
    "content" "Get Hugo"
)}}
{{ partial "shortcodes/button.html" (dict
  "context" .
  "href" "https://gohugo.io/"
  "style" "warning"
  "icon" "dragon"
  "content" "Get Hugo"
)}}

Once the button is clicked, it opens another browser tab for the given URL.

Parameter

Name Default Notes
href <empty> Either the destination URL for the button or JavaScript code to be executed on click. If this parameter is not set, the button will do nothing but is still displayed as clickable.

- if starting with javascript: all following text will be executed in your browser
- every other string will be interpreted as URL
style transparent The color scheme used to paint the button.

- by severity: info, note, tip, warning
- by brand color: primary, secondary
- by color: blue, green, grey, orange, red
- by special color: default, transparent
icon see notes Font Awesome icon name set to the left of the title. Depending on the style there may be a default icon. Any given value will overwrite the default.

- for severity styles: a nice matching icon for the severity
- for all other colors: <empty>

If you want no icon for a severity style, you have to set this parameter to " " (a non empty string filled with spaces)
iconposition left Places the icon to the left or right of the title.
target see notes The destination frame/window if href is an URL. Otherwise the parameter is not used. This behaves similar to normal links. If the parameter is not given it defaults to:

- _blank for any address starting with http:// or https://
- no specific value for all other links
type see notes The button type if href is JavaScript. Otherwise the parameter is not used. If the parameter is not given it defaults to button
<content> see notes Arbitrary text for the button title. Depending on the style there may be a default title. Any given value will overwrite the default.

- for severity styles: the matching title for the severity
- for all other colors: <empty>

If you want no title for a severity style, you have to set this parameter to " " (a non empty string filled with spaces)

Examples

Style

By Severity

{{% button href="https://gohugo.io/" style="info" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="note" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="tip" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="warning" %}}Get Hugo{{% /button %}}

Get Hugo Get Hugo Get Hugo Get Hugo

By Brand Colors

{{% button href="https://gohugo.io/" style="primary" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="secondary" %}}Get Hugo{{% /button %}}

Get Hugo Get Hugo

By Color

{{% button href="https://gohugo.io/" style="blue" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="green" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="grey" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="orange" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="red" %}}Get Hugo{{% /button %}}

Get Hugo Get Hugo Get Hugo Get Hugo Get Hugo

By Special Color

{{% button href="https://gohugo.io/" style="default" %}}Get Hugo{{% /button %}}
{{% button href="https://gohugo.io/" style="transparent" %}}Get Hugo{{% /button %}}

Get Hugo Get Hugo

Icon

To the Left

{{% button href="https://gohugo.io/" icon="download" %}}Get Hugo{{% /button %}}
Get Hugo

To the Right

{{% button href="https://gohugo.io/" icon="download" iconposition="right" %}}Get Hugo{{% /button %}}
Get Hugo

Override for Severity

{{% button href="https://gohugo.io/" icon="dragon" style="warning" %}}Get Hugo{{% /button %}}
Get Hugo

Target

{{% button href="https://gohugo.io/" target="_self" %}}Get Hugo in same window{{% /button %}}
{{% button href="https://gohugo.io/" %}}Get Hugo in new Window/Frame (default){{% /button %}}

Get Hugo in same Window/Frame Get Hugo in new Window/Frame (default)

Other

Severity Style with All Defaults

{{% button href="https://gohugo.io/" style="tip" %}}{{% /button %}}
Tip

Button to Internal Page

{{% button href="/" %}}Home{{% /button %}}
Home

Button with JavaScript Action

If your JavaScript action does not change the focus afterwards, make sure to call this.blur() in the end to unselect the button.

{{% button style="primary" icon="bullhorn" href="javascript:alert('Hello world!');this.blur();" %}}Shout it out{{% /button %}}

Button within a form Element

To use native HTML elements in your Markdown, add this in your config.toml

[markup.goldmark.renderer]
    unsafe = true
<form action="../../search.html" method="get">
  <input name="search-by-detail" class="search-by" type="search">
  {{% button type="submit" style="secondary" icon="search" %}}Search{{% /button %}}
</form>

Children

The children shortcode lists the child pages of the current page and its descendants .

Usage

While the examples are using shortcodes with named parameter you are free to also call this shortcode from your own partials.

{{% children sort="weight" %}}
{{ partial "shortcodes/children.html" (dict
  "context" .
  "sort" "weight"
)}}

Parameter

Name Default Notes
containerstyle ul Choose the style used to group all children. It could be any HTML tag name.
style li Choose the style used to display each descendant. It could be any HTML tag name.
showhidden false When true, child pages hidden from the menu will be displayed as well.
description false When true shows a short text under each page in the list. When no description or summary exists for the page, the first 70 words of the content is taken - read more info about summaries on gohugo.io.
depth 1 The depth of descendants to display. For example, if the value is 2, the shortcode will display two levels of child pages. To get all descendants, set this value to a high number eg. 999.
sort see notes The sort order of the displayed list.

If not set it is sorted by the ordersectionsby setting of the site and the pages frontmatter

- weight: to sort on menu order
- title: to sort alphabetically on menu label.

Examples

All Default

{{% children  %}}

With Description

{{% children description="true" %}}
  • page X

    This is a plain page test, and the beginning of a YAML multiline description...

  • page 1

    This is a demo child page

  • page 2

    This is a demo child page with no description. So its content is used as description.

  • page 3

    This is a demo child page

Infinite Depth and Hidden Pages

{{% children depth="999" showhidden="true" %}}

Heading Styles for Container and Elements

{{% children containerstyle="div" style="h2" depth="3" description="true" %}}

page X

This is a plain page test, and the beginning of a YAML multiline description...

page 1

This is a demo child page

page 1-1

This is a demo child page

page 1-1-2

This is a demo child page

page 1-1-3

This is a demo child page

page 2

This is a demo child page with no description. So its content is used as description.

page 3

This is a demo child page

page 3-1

This is a plain page test nested in a parent

Divs for Group and Element Styles

{{% children containerstyle="div" style="div" depth="3" %}}

Subsections of Children

page X

This is a plain demo child page.

page 1

This is a demo child page.

Subpages of this page

Subsections of page 1

Subsections of page 1-1

Subsections of page 1-1-2

page 1-1-2-1

This is a plain demo child page.

page 1-1-2-2

This is a plain demo child page.

page 1-1-3

This is a plain demo child page.

page 2

This is a demo child page with no description.

So its content is used as description.

page 3

This is a demo child page.

Subpages of this page

Subsections of page 3

page 3-1

This is a plain demo child page.

Expand

The expand shortcode displays an expandable/collapsible section of text.

Expand me...

Usage

While the examples are using shortcodes with named parameter you are free to use positional as well or also call this shortcode from your own partials.

{{% expand title="Expand me..." %}}Thank you!{{% /expand %}}
{{% expand "Expand me..." %}}Thank you!{{% /expand %}}
{{ partial "shortcodes/expand.html" (dict
  "context" .
  "title" "Expand me..."
  "content" "Thank you!"
)}}

Parameter

Name Position Default Notes
title 1 "Expand me..." Arbitrary text to appear next to the expand/collapse icon.
open 2 false When true the content text will be initially shown as expanded.
<content> <empty> Arbitrary text to be displayed on expand.

Examples

All Defaults

{{% expand %}}Yes, you did it!{{% /expand %}}
Expand me...

Initially Expanded

{{% expand title="Expand me..." open="true" %}}No need to press you!{{% /expand %}}
Expand me...
No need to press you!

Arbitrary Text

{{% expand title="Show me almost endless possibilities" %}}
You can add standard markdown syntax:

- multiple paragraphs
- bullet point lists
- _emphasized_, **bold** and even **_bold emphasized_** text
- [links](https://example.com)
- etc.

```plaintext
...and even source code
```

> the possibilities are endless (almost - including other shortcodes may or may not work)
{{% /expand %}}
Show me almost endless possibilities

Include

The include shortcode includes other files from your project inside of the current page.

Usage

While the examples are using shortcodes with named parameter you are free to use positional aswell or also call this shortcode from your own partials.

{{% include file="shortcodes/INCLUDE_ME.md" %}}
{{% include "shortcodes/INCLUDE_ME.md" %}}
{{ partial "shortcodes/include .html" (dict
  "context" .
  "file" "shortcodes/INCLUDE_ME.md"
)}}

The included files can even contain Markdown and will be taken into account when generating the table of contents.

Parameter

Name Position Default Notes
file 1 <empty> The path to the file to be included. Path resolution adheres to Hugo’s build-in readFile function
hidefirstheading 2 false When true and the included file contains headings, the first heading will be hidden. This comes in handy, eg. if you include otherwise standalone Markdown files.

Examples

Arbitrary Content

{{% include "shortcodes/INCLUDE_ME.md" %}}

You can add standard markdown syntax:

  • multiple paragraphs
  • bullet point lists
  • emphasized, bold and even bold emphasized text
  • links
  • etc.
...and even source code

the possibilities are endless (almost - including other shortcodes may or may not work) (almost - including other shortcodes may or may not work)

Math

The math shortcode generates beautiful formatted math and chemical formulae using the MathJax library.

$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$
Note

This only works in modern browsers.

Usage

While the examples are using shortcodes with named parameter it is recommended to use codefences instead. This is because more and more other software supports Math codefences (eg. GitHub) and so your markdown becomes more portable.

You are free to also call this shortcode from your own partials.

Note

To use codefence syntax you have to turn off guessSyntax for the markup.highlight setting (see the configuration section).

```math { align="center" }
$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$
```
{{< math align="center" >}}
$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$
{{< /math >}}
{{ partial "shortcodes/math.html" (dict
  "context" .
  "content" "$$left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$"
  "align"   "center"
)}}

Parameter

Name Default Notes
align center Allowed values are left, center or right.
<content> <empty> Your formuale.

Configuration

MathJax is configured with default settings. You can customize MathJax’s default settings for all of your files thru a JSON object in your config.toml or override these settings per page thru your pages frontmatter.

The JSON object of your config.toml / frontmatter is forwarded into MathJax’s configuration object.

See MathJax documentation for all allowed settings.

Note

To use codefence syntax you have to turn off guessSyntax for the markup.highlight setting.

Global Configuration File

[params]
  mathJaxInitialize = "{ \"chtml\": { \"displayAlign\": \"left\" } }"

[markup]
  [markup.highlight]
    # if `guessSyntax = true`, there will be no unstyled code even if no language
    # was given BUT Mermaid and Math codefences will not work anymore! So this is a
    # mandatory setting for your site if you want to use Math codefences
    guessSyntax = false

Page’s Frontmatter

+++
mathJaxInitialize = "{ \"chtml\": { \"displayAlign\": \"left\" } }"
+++

Examples

Inline Math

Inline math is generated if you use a single `$` as a delimiter around your formulae: {{< math >}}$\sqrt{3}${{< /math >}}

Inline math is generated if you use a single $ as a delimiter around your formulae: $\sqrt{3}$

Blocklevel Math with Right Alignment

If you delimit your formulae by two consecutive `$$` it generates a new block.

{{< math align="right" >}}
$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$
{{< /math >}}

If you delimit your formulae by two consecutive $$ it generates a new block.

$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$

Codefence

You can also use codefences but without further parameter.

```math
$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$
```
$$\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)$$

Chemical Formulae

{{< math >}}
$$\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}$$
{{< /math >}}
$$\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}$$

Mermaid

The mermaid shortcode generates diagrams and flowcharts from text, in a similar manner as Markdown using the Mermaid library.

graph LR; If --> Then Then --> Else
Note

This only works in modern browsers.

Warning

Due to limitations with Mermaid, it is currently not possible to use Mermaid code fences in an initially collapsed expand shortcode. This is a know issue and can’t be fixed by this theme.

Usage

While the examples are using shortcodes with named parameter it is recommended to use codefences instead. This is because more and more other software supports Mermaid codefences (eg. GitHub) and so your markdown becomes more portable.

You are free to also call this shortcode from your own partials.

Note

To use codefence syntax you have to turn off guessSyntax for the markup.highlight setting (see the configuration section).

```mermaid { align="center" }
graph LR;
    If --> Then
    Then --> Else
```
{{< mermaid align="center" >}}
graph LR;
    If --> Then
    Then --> Else
{{< /mermaid >}}
{{ partial "shortcodes/mermaid.html" (dict
  "context" .
  "content" "graph LR;\nIf --> Then\nThen --> Else"
  "align"   "center"
)}}

The generated graphs can be be panned by dragging them and zoomed by using the mousewheel. On mobile devices you can use finger gestures.

Parameter

Name Default Notes
align center Allowed values are left, center or right.
<content> <empty> Your Mermaid graph.

Configuration

Mermaid is configured with default settings. You can customize Mermaid’s default settings for all of your files thru a JSON object in your config.toml, override these settings per page thru your pages frontmatter or override these setting per diagramm thru diagram directives.

The JSON object of your config.toml / frontmatter is forwarded into Mermaid’s mermaid.initialize() function.

See Mermaid documentation for all allowed settings.

The theme setting can also be set by your used color variant. This will be the sitewide default and can - again - be overridden by your settings in config.toml, frontmatter or diagram directives.

Note

To use codefence syntax you have to turn off guessSyntax for the markup.highlight setting.

Global Configuration File

[params]
  mermaidInitialize = "{ \"theme\": \"dark\" }"

[markup]
  [markup.highlight]
    # if `guessSyntax = true`, there will be no unstyled code even if no language
    # was given BUT Mermaid and Math codefences will not work anymore! So this is a
    # mandatory setting for your site if you want to use Mermaid codefences
    guessSyntax = false

Page’s Frontmatter

+++
mermaidInitialize = "{ \"theme\": \"dark\" }"
+++

Examples

Flowchart with Non-Default Mermaid Theme

{{< mermaid >}}
%%{init:{"theme":"forest"}}%%
graph LR;
    A[Hard edge] -->|Link text| B(Round edge)
    B --> C{<strong>Decision</strong>}
    C -->|One| D[Result one]
    C -->|Two| E[Result two]
{{< /mermaid >}}
%%{init:{"theme":"forest"}}%% graph LR; A[Hard edge] -->|Link text| B(Round edge) B --> C{<strong>Decision</strong>} C -->|One| D[Result one] C -->|Two| E[Result two]

Sequence Diagram with Configuration Directive

{{< mermaid >}}
%%{init:{"fontFamily":"monospace", "sequence":{"showSequenceNumbers":true}}}%%
sequenceDiagram
    Alice->>John: Hello John, how are you?
    loop Healthcheck
        John->>John: Fight against hypochondria
    end
    Note right of John: Rational thoughts!
    John-->>Alice: Great!
    John->>Bob: How about you?
    Bob-->>John: Jolly good!
{{< /mermaid >}}
%%{init:{"fontFamily":"monospace", "sequence":{"showSequenceNumbers":true}}}%% sequenceDiagram Alice->>John: Hello John, how are you? loop Healthcheck John->>John: Fight against hypochondria end Note right of John: Rational thoughts! John-->>Alice: Great! John->>Bob: How about you? Bob-->>John: Jolly good!

Class Diagram with Codefence Syntax

```mermaid
classDiagram
    Animal <|-- Duck
    Animal <|-- Fish
    Animal <|-- Zebra
    Animal : +int age
    Animal : +String gender
    Animal: +isMammal()
    Animal: +mate()
    class Duck{
      +String beakColor
      +swim()
      +quack()
    }
    class Fish{
      -int sizeInFeet
      -canEat()
    }
    class Zebra{
      +bool is_wild
      +run()
    }
```
classDiagram Animal <|-- Duck Animal <|-- Fish Animal <|-- Zebra Animal : +int age Animal : +String gender Animal: +isMammal() Animal: +mate() class Duck{ +String beakColor +swim() +quack() } class Fish{ -int sizeInFeet -canEat() } class Zebra{ +bool is_wild +run() }

State Diagram Aligned to the Right

{{< mermaid align="right" >}}
stateDiagram-v2
    open: Open Door
    closed: Closed Door
    locked: Locked Door
    open   --> closed: Close
    closed --> locked: Lock
    locked --> closed: Unlock
    closed --> open: Open
{{< /mermaid >}}
stateDiagram-v2 open: Open Door closed: Closed Door locked: Locked Door open --> closed: Close closed --> locked: Lock locked --> closed: Unlock closed --> open: Open

Entity Relationship Model

{{< mermaid >}}
erDiagram
    CUSTOMER }|..|{ DELIVERY-ADDRESS : has
    CUSTOMER ||--o{ ORDER : places
    CUSTOMER ||--o{ INVOICE : "liable for"
    DELIVERY-ADDRESS ||--o{ ORDER : receives
    INVOICE ||--|{ ORDER : covers
    ORDER ||--|{ ORDER-ITEM : includes
    PRODUCT-CATEGORY ||--|{ PRODUCT : contains
    PRODUCT ||--o{ ORDER-ITEM : "ordered in"
{{< /mermaid >}}
erDiagram CUSTOMER }|..|{ DELIVERY-ADDRESS : has CUSTOMER ||--o{ ORDER : places CUSTOMER ||--o{ INVOICE : "liable for" DELIVERY-ADDRESS ||--o{ ORDER : receives INVOICE ||--|{ ORDER : covers ORDER ||--|{ ORDER-ITEM : includes PRODUCT-CATEGORY ||--|{ PRODUCT : contains PRODUCT ||--o{ ORDER-ITEM : "ordered in"

User Journey

{{< mermaid >}}
journey
    title My working day
    section Go to work
      Make tea: 5: Me
      Go upstairs: 3: Me
      Do work: 1: Me, Cat
    section Go home
      Go downstairs: 5: Me
      Sit down: 3: Me
{{< /mermaid >}}
journey title My working day section Go to work Make tea: 5: Me Go upstairs: 3: Me Do work: 1: Me, Cat section Go home Go downstairs: 5: Me Sit down: 3: Me

GANTT Chart

{{< mermaid >}}
gantt
        dateFormat  YYYY-MM-DD
        title Adding GANTT diagram functionality to Mermaid
        section A section
        Completed task            :done,    des1, 2014-01-06,2014-01-08
        Active task               :active,  des2, 2014-01-09, 3d
        Future task               :         des3, after des2, 5d
        Future task2              :         des4, after des3, 5d
        section Critical tasks
        Completed task in the critical line :crit, done, 2014-01-06,24h
        Implement parser and jison          :crit, done, after des1, 2d
        Create tests for parser             :crit, active, 3d
        Future task in critical line        :crit, 5d
        Create tests for renderer           :2d
        Add to Mermaid                      :1d
{{< /mermaid >}}
gantt dateFormat YYYY-MM-DD title Adding GANTT diagram functionality to Mermaid section A section Completed task :done, des1, 2014-01-06,2014-01-08 Active task :active, des2, 2014-01-09, 3d Future task : des3, after des2, 5d Future task2 : des4, after des3, 5d section Critical tasks Completed task in the critical line :crit, done, 2014-01-06,24h Implement parser and jison :crit, done, after des1, 2d Create tests for parser :crit, active, 3d Future task in critical line :crit, 5d Create tests for renderer :2d Add to Mermaid :1d

Pie Chart

{{< mermaid >}}
pie title Pets adopted by volunteers
    "Dogs" : 386
    "Cats" : 85
    "Rats" : 15
{{< /mermaid >}}
pie title Pets adopted by volunteers "Dogs" : 386 "Cats" : 85 "Rats" : 15

Requirement Diagram

{{< mermaid >}}
    requirementDiagram

    requirement test_req {
    id: 1
    text: the test text.
    risk: high
    verifymethod: test
    }

    element test_entity {
    type: simulation
    }

    test_entity - satisfies -> test_req
{{< /mermaid >}}
requirementDiagram requirement test_req { id: 1 text: the test text. risk: high verifymethod: test } element test_entity { type: simulation } test_entity - satisfies -> test_req

Git Graph

{{< mermaid >}}
gitGraph
    commit
    commit
    branch develop
    checkout develop
    commit
    commit
    checkout main
    merge develop
    commit
    commit
{{< /mermaid >}}
gitGraph commit commit branch develop checkout develop commit commit checkout main merge develop commit commit

C4 Diagrams

{{< mermaid >}}
C4Context
    title System Context diagram for Internet Banking System
    Enterprise_Boundary(b0, "BankBoundary0") {
    Person(customerA, "Banking Customer A", "A customer of the bank, with personal bank accounts.")
    Person(customerB, "Banking Customer B")
    Person_Ext(customerC, "Banking Customer C", "desc")

    Person(customerD, "Banking Customer D", "A customer of the bank, <br/> with personal bank accounts.")

    System(SystemAA, "Internet Banking System", "Allows customers to view information about their bank accounts, and make payments.")

    Enterprise_Boundary(b1, "BankBoundary") {

        SystemDb_Ext(SystemE, "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.")

        System_Boundary(b2, "BankBoundary2") {
        System(SystemA, "Banking System A")
        System(SystemB, "Banking System B", "A system of the bank, with personal bank accounts. next line.")
        }

        System_Ext(SystemC, "E-mail system", "The internal Microsoft Exchange e-mail system.")
        SystemDb(SystemD, "Banking System D Database", "A system of the bank, with personal bank accounts.")

        Boundary(b3, "BankBoundary3", "boundary") {
        SystemQueue(SystemF, "Banking System F Queue", "A system of the bank.")
        SystemQueue_Ext(SystemG, "Banking System G Queue", "A system of the bank, with personal bank accounts.")
        }
    }
    }

    BiRel(customerA, SystemAA, "Uses")
    BiRel(SystemAA, SystemE, "Uses")
    Rel(SystemAA, SystemC, "Sends e-mails", "SMTP")
    Rel(SystemC, customerA, "Sends e-mails to")

    UpdateElementStyle(customerA, $fontColor="red", $bgColor="grey", $borderColor="red")
    UpdateRelStyle(customerA, SystemAA, $textColor="blue", $lineColor="blue", $offsetX="5")
    UpdateRelStyle(SystemAA, SystemE, $textColor="blue", $lineColor="blue", $offsetY="-10")
    UpdateRelStyle(SystemAA, SystemC, $textColor="blue", $lineColor="blue", $offsetY="-40", $offsetX="-50")
    UpdateRelStyle(SystemC, customerA, $textColor="red", $lineColor="red", $offsetX="-50", $offsetY="20")

    UpdateLayoutConfig($c4ShapeInRow="3", $c4BoundaryInRow="1")
{{< /mermaid >}}
C4Context title System Context diagram for Internet Banking System Enterprise_Boundary(b0, "BankBoundary0") { Person(customerA, "Banking Customer A", "A customer of the bank, with personal bank accounts.") Person(customerB, "Banking Customer B") Person_Ext(customerC, "Banking Customer C", "desc") Person(customerD, "Banking Customer D", "A customer of the bank, <br/> with personal bank accounts.") System(SystemAA, "Internet Banking System", "Allows customers to view information about their bank accounts, and make payments.") Enterprise_Boundary(b1, "BankBoundary") { SystemDb_Ext(SystemE, "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.") System_Boundary(b2, "BankBoundary2") { System(SystemA, "Banking System A") System(SystemB, "Banking System B", "A system of the bank, with personal bank accounts. next line.") } System_Ext(SystemC, "E-mail system", "The internal Microsoft Exchange e-mail system.") SystemDb(SystemD, "Banking System D Database", "A system of the bank, with personal bank accounts.") Boundary(b3, "BankBoundary3", "boundary") { SystemQueue(SystemF, "Banking System F Queue", "A system of the bank.") SystemQueue_Ext(SystemG, "Banking System G Queue", "A system of the bank, with personal bank accounts.") } } } BiRel(customerA, SystemAA, "Uses") BiRel(SystemAA, SystemE, "Uses") Rel(SystemAA, SystemC, "Sends e-mails", "SMTP") Rel(SystemC, customerA, "Sends e-mails to") UpdateElementStyle(customerA, $fontColor="red", $bgColor="grey", $borderColor="red") UpdateRelStyle(customerA, SystemAA, $textColor="blue", $lineColor="blue", $offsetX="5") UpdateRelStyle(SystemAA, SystemE, $textColor="blue", $lineColor="blue", $offsetY="-10") UpdateRelStyle(SystemAA, SystemC, $textColor="blue", $lineColor="blue", $offsetY="-40", $offsetX="-50") UpdateRelStyle(SystemC, customerA, $textColor="red", $lineColor="red", $offsetX="-50", $offsetY="20") UpdateLayoutConfig($c4ShapeInRow="3", $c4BoundaryInRow="1")

Mindmap

Note

As of Mermaid version 9.2.2 this diagram type is not included in the official distribution and will not be useable in this theme.

{{< mermaid >}}
mindmap
  root((mindmap))
    Origins
      Long history
      ::icon(fa fa-book)
      Popularisation
        British popular psychology author Tony Buzan
    Research
      On effectivness<br/>and features
      On Automatic creation
        Uses
            Creative techniques
            Strategic planning
            Argument mapping
    Tools
      Pen and paper
      Mermaid
{{< /mermaid >}}
mindmap root((mindmap)) Origins Long history ::icon(fa fa-book) Popularisation British popular psychology author Tony Buzan Research On effectivness<br/>and features On Automatic creation Uses Creative techniques Strategic planning Argument mapping Tools Pen and paper Mermaid

Notice

The notice shortcode shows various types of disclaimers with adjustable color, title and icon to help you structure your page.

There may be pirates

It is all about the boxes.

Usage

While the examples are using shortcodes with named parameter you are free to use positional as well or also call this shortcode from your own partials.

{{% notice style="primary" title="There may be pirates" icon="skull-crossbones" %}}
It is all about the boxes.
{{% /notice %}}
{{% notice primary "There may be pirates" "skull-crossbones" %}}
It is all about the boxes.
{{% /notice %}}
{{ partial "shortcodes/notice.html" (dict
  "context" .
  "style" "primary"
  "title" "There may be pirates"
  "icon" "skull-crossbones"
  "content" "It is all about the boxes."
)}}

Parameter

Name Position Default Notes
style 1 default The color scheme used to highlight the box content.

- by severity: info, note, tip, warning
- by brand color: primary, secondary
- by color: blue, green, grey, orange, red
- by special color: default, transparent
title 2 see notes Arbitrary text for the box title. Depending on the style there may be a default title. Any given value will overwrite the default.

- for severity styles: the matching title for the severity
- for all other colors: <empty>

If you want no title for a severity style, you have to set this parameter to " " (a non empty string filled with spaces)
icon 3 see notes Font Awesome icon name set to the left of the title. Depending on the style there may be a default icon. Any given value will overwrite the default.

- for severity styles: a nice matching icon for the severity
- for all other colors: <empty>

If you want no icon for a severity style, you have to set this parameter to " " (a non empty string filled with spaces)
<content> <empty> Arbitrary text to be displayed in box.

Examples

By Severity

Info with markup

{{% notice style="info" %}}
An **information** disclaimer

You can add standard markdown syntax:

- multiple paragraphs
- bullet point lists
- _emphasized_, **bold** and even ***bold emphasized*** text
- [links](https://example.com)
- etc.

```plaintext
...and even source code
```

> the possibilities are endless (almost - including other shortcodes may or may not work)
{{% /notice %}}
Info

An information disclaimer

You can add standard markdown syntax:

  • multiple paragraphs
  • bullet point lists
  • emphasized, bold and even bold emphasized text
  • links
  • etc.
...and even source code

the possibilities are endless (almost - including other shortcodes may or may not work)

Note

{{% notice style="note" %}}
A **notice** disclaimer
{{% /notice %}}
Note

A notice disclaimer

Tip

{{% notice style="tip" %}}
A **tip** disclaimer
Tip

A tip disclaimer

Warning

{{% notice style="warning" %}}
A **warning** disclaimer
{{% /notice %}}
Warning

A warning disclaimer

Warning with Non-Default Title and Icon

{{% notice style="warning" title="Here are dragons" icon="dragon" %}}
A **warning** disclaimer
{{% /notice %}}
Here are dragons

A warning disclaimer

Warning without a Title and Icon

{{% notice style="warning" title=" " icon=" " %}}
A **warning** disclaimer
{{% /notice %}}

A warning disclaimer

By Brand Colors

Primary with Title only

{{% notice style="primary" title="Primary" %}}
A **primary** disclaimer
{{% /notice %}}
Primary

A primary disclaimer

Secondary with Icon only

{{% notice style="secondary" icon="stopwatch" %}}
A **secondary** disclaimer
{{% /notice %}}

A secondary disclaimer

By Color

Blue without a Title and Icon

{{% notice style="blue" %}}
A **blue** disclaimer
{{% /notice %}}

A blue disclaimer

Green with Title only

{{% notice style="green" title="Green" %}}
A **green** disclaimer
{{% /notice %}}
Green

A green disclaimer

Grey with Icon only

{{% notice style="grey" icon="bug" %}}
A **grey** disclaimer
{{% /notice %}}

A grey disclaimer

Orange with Title and Icon

{{% notice style="orange" title="Orange" icon="bug" %}}
A **orange** disclaimer
{{% /notice %}}
Orange

A orange disclaimer

Red

{{% notice style="red" %}}
A **red** disclaimer
{{% /notice %}}

A red disclaimer

By Special Color

Default with Title and Icon

{{% notice style="default" title"Pay Attention to this Note!" icon="skull-crossbones" %}}
Some serious information.
{{% /notice %}}
Pay Attention to this Note!

Some serious information.

Transparent with Title and Icon

{{% notice style="transparent" title"Pay Attention to this Note!" icon="skull-crossbones" %}}
Some serious information.
{{% /notice %}}
Pay Attention to this Note!

Some serious information.

Site param

The siteparam shortcode prints values of site params.

Usage

While the examples are using shortcodes with named parameter you are free to use positional aswell or call this shortcode from your own partials.

{{% siteparam name="editURL" %}}
{{% siteparam "editURL" %}}
{{ partial "shortcodes/siteparam.html" (dict
  "context" .
  "name" "editURL"
)}}

Parameter

Name Position Default Notes
name 1 <empty> The name of the site param to be displayed.

Examples

editURL from config.toml

`editURL` value: {{% siteparam name="editURL" %}}

editURL value: https://github.com/McShelby/hugo-theme-relearn/edit/main/exampleSite/content/

Swagger

This shortcode uses the RapiDoc library to display your Swagger / OpenAPI Specifications.

Note

This only works in modern browsers.

Usage

While the examples are using shortcodes with named parameter you are free to also call this shortcode from your own partials.

{{< swagger src="https://petstore3.swagger.io/api/v3/openapi.json" >}}
{{ partial "shortcodes/swagger.html" (dict
  "context" .
  "src" "https://petstore3.swagger.io/api/v3/openapi.json"
)}}

Parameter

Name Default Notes
src <empty> The URL to the OpenAPI Specification file. This can be relative to the URL of your page if it is a leaf or branch bundle.
Note

If you want to print out (or generate a PDF) from your Swagger documentation, don’t initiate printing directly from the page because the elements are optimized for interactive usage in a browser.

Instead, open the print preview in your browser and initiate printing from that page. This page is optimized for reading and expands most of the available sections.

Configuration

Swagger is configured with default settings. You can customize Swagger’s default settings for all of your files thru a JSON object in your config.toml or override these settings per page thru your pages frontmatter.

The JSON object of your config.toml / frontmatter is forwarded into Swagger’s initialization. At the moment, only the theme setting is supported.

The theme setting can also be set by your used color variant. This will be the sitewide default and can - again - be overridden by your settings in config.toml or frontmatter.

Global Configuration File

[params]
  swaggerInitialize = "{ \"theme\": \"dark\" }"

Example

Using Local File

{{< swagger src="petstore.json" >}}

Tabbed views

The tabs shortcode displays arbitrary content in unlimited number of tabs. This comes in handy eg. for providing code snippets for multiple languages or providing configuration in different formats.

print("Hello World!")
echo "Hello World!"

Usage

While the examples are using shortcodes with named parameter you are free to also call this shortcode from your own partials.

{{< tabs >}}
{{% tab name="python" %}}
```python
print("Hello World!")
```
{{% /tab %}}
{{% tab name="bash" %}}
```bash
echo "Hello World!"
```
{{% /tab %}}
{{< /tabs >}}
{{ partial "shortcodes/tabs.html" (dict
  "context" .
  "tabs" (slice
    (dict
      "name" "python"
      "content" ("```python\nprint(\"Hello World!\")\n```" | markdownify)
    )
    (dict
      "name" "bash"
      "content" ("```bash\necho \"Hello World!\"\n```" | markdownify)
    )
  )
)}}

Parameter

Name Default Notes
groupid default Arbitrary name of the group the tab view belongs to.

Tab views with the same groupid sychronize their selected tab. This sychronization applies to the whole site!
<content> <empty> Arbitrary number of tabs defined with the tab sub-shortcode.
Note

When using tab views with different content sets, make sure to use a common groupid for equal sets of tabs but distinct groupid for different sets.

The tab selection is restored automatically based on the groupid and if it cannot find a tab item because it came from the 'default' group on a different page then the first tab is selected instead.

Examples

Distinct groupid

{{< tabs groupid="config" >}}
{{% tab name="json" %}}
```json
{
  "Hello": "World"
}
```
{{% /tab %}}
{{% tab name="XML" %}}
```xml
<Hello>World</Hello>
```
{{% /tab %}}
{{% tab name="properties" %}}
```properties
Hello = World
```
{{% /tab %}}
{{< /tabs >}}
{
  "Hello": "World"
}
<Hello>World</Hello>
Hello = World

Non-Distinct groupid

See what happens to this tab view if you select properties tab from the previous example.

{{< tabs groupid="config" >}}
{{% tab name="json" %}}
```json
{
  "Hello": "World"
}
```
{{% /tab %}}
{{% tab name="XML" %}}
```xml
<Hello>World</Hello>
```
{{% /tab %}}
{{< /tabs >}}
{
  "Hello": "World"
}
<Hello>World</Hello>

Nested Tabs

In case you want to nest tabs, the parent tab that contains the subtabs needs to be declared with {{< tab >}} instead of {{% tab %}}. Note, that in this case it is not possible to put markdown in the parent tab.

{{< tabs groupid="main" >}}
{{< tab name="Text" >}}
  Simple text is possible here...
  {{< tabs groupid="tabs-example-language" >}}
  {{% tab name="python" %}}
  Python is **super** easy.

  - most of the time.
  - if you don't want to output unicode
  {{% /tab %}}
  {{% tab name="bash" %}}
  Bash is for **hackers**.
  {{% /tab %}}
  {{< /tabs >}}
{{< /tab >}}

{{< tab name="Code" >}}
  ...but no markdown
  {{< tabs groupid="tabs-example-language" >}}
  {{% tab name="python" %}}
  ```python
  print("Hello World!")
  ```
  {{% /tab %}}
  {{% tab name="bash" %}}
  ```bash
  echo "Hello World!"
  ```
  {{% /tab %}}
  {{< /tabs >}}
{{< /tab >}}
{{< /tabs >}}
Simple text is possible here...

Python is super easy.

  • most of the time.
  • if you don’t want to output unicode

Bash is for hackers.

...but no markdown
print("Hello World!")
echo "Hello World!"