block

The block function is used to render the contents of a block more than once. It is not to be confused with the block tag which is used to declare blocks.

The following example will render the contents of the "post" block twice; once where it was declared and again using the block function:

{% block "post" %} content {% endblock %}

{{ block("post") }}

The above example will output the following:

content

content

Performance Warning

The block function will impair the use of the flush tag used within the block being rendered. It is typically okay for a block to use the flush tag which will flush the already-rendered content to the user-provided Writer but the block function will internally use it's own StringWriter and therefore flushing inside the block will no longer do any good (nor will it do harm).