This page describes how to define and render custom content blocks that can be grouped to form content compositions in implementations of the Content editor.
The Magnolia Stories app, which is an implementation of the content editor, uses four predefined block types:
The Content editor provides predefined block types that you can use in your custom content editor app:
You can also define your own blocks.
text block implements a special
RichTextBlock class, which features basic text formatting functions:
All the other predefined block types implement the
Demo block types
The Magnolia demo decorates the default Stories app and provides two additional block types you can use:
Both block types implement the
To see these blocks you must have the Magnolia demo modules installed.
Defining a custom block
To define a custom block, use a YAML definition file and apply the
FieldSetBlockDefinition class of the Content editor submodule.
- Create a YAML file in the
blocksfolder of your module and add:
templateIdof your block.
The list of fields the content block consists of.
Provide a template definition file and a template script for your block in the
templates/blockssubfolder of your module.
Optionally, in the
i18nfolder of your module, provide a file with i18n keys for labels and descriptions of the block's fields.
Example: a quotation block
The following code samples are used to create a quotation block in a light module called
Rendering blocks in a FreeMarker script
This section explains how to render block content in a page or a component template.
The Content editor module provides
cms:block, a Magnolia FreeMarker directive for fetching and rendering block elements.
The directive expects a node of the type
mgnl:block as argument, identifies the template definition of the block and calls the associated template script.
Block-rendering scripts in the
article-editor submodule already contains the following predefined block-rendering scripts used by the Stories app:
articleDisplayArea.ftl– Displays a single story.
articleListArea.ftl– Displays a list of all story.
articleReferenceArea.ftl– Displays a referenced story through the
/templates/pages/article.inc.ftlpage template script.
Examples of block rendering
The examples show how to render blocks within a template script of a page or component template. Using the Magnolia directive
cms.block, the template script of the block is executed during the rendering of the page or component.
- Get story content:
[#assign articleContent = cmsfn.contentById(content.article, "") /]
- Get the blocks for that story:
[#assign blocks = cmsfn.children(articleContent, "mgnl:block") /]
Retrieve all blocks for a piece of content:
Line 4: The Magnolia directive
cms.blockensures that the template script associated to the passed block is called to render the block content.
Retrieve two blocks, for instance to display an excerpt of a story in a list:
Line 7: The Magnolia directive
cms.blockcalls the template script associated to the passed block content.