#35636: differentiate placeholder and content provider blocks
---------------------------------+--------------------------------------
Reporter: Yingjie Lan | Owner: (none)
Type: New feature | Status: new
Component: Template system | Version: 5.0
Severity: Normal | Resolution:
Keywords: template block | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
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Description changed by Yingjie Lan:
Old description:
> The block is a core feature in the template system. Currently, the syntax
> provides no explicit grammar to differentiate between a placeholder block
> and a content provider block. In this ticket, an optional and fully
> backward compatible syntax is proposed to mark a block as a content
> provider. This new syntax enhances readability, and imposes little effort
> to implement, and opens the door to allow multiple occurrences of the
> same block in a single template being given different contents on
> different conditions (this feature has been requested many times over the
> years).
>
> Here is the proposed syntax illustrated with an example:
>
> {{{
> {% block usertools = %} here are my user tools. {% endblock %}
> }}}
>
> Note the equal sign in the end of the block opening mark, which is an
> optional element added here to indicate that this is not a placeholder,
> but a content provider for the block named 'usertools' defined somewhere
> else.
>
> If this syntax is implemented, the multiple occurrence of such content
> providers in a single template file can be allowed in the future if
> deemed desirable.
New description:
The block is a core feature in the template system. Currently, the syntax
provides no explicit grammar to differentiate between a placeholder block
and a content provider block. In this ticket, an optional and fully
backward compatible syntax is proposed to mark a block as a content
provider. This new syntax enhances readability, and imposes little effort
to implement, and opens the door to allow multiple occurrences of the same
block in a single template being given different contents on different
conditions (this feature has been requested many times over the years).
Here is the proposed syntax illustrated with an example:
{{{
{% block usertools = %} here are my user tools. {% endblock %}
}}}
Note the equal sign in the end of the block opening mark, which is an
optional element added here to indicate that this is not a placeholder,
but a content provider for the block named 'usertools' defined somewhere
else.
If this syntax is implemented (e.g. by using a boolean property of the
block object), the multiple occurrence of such content providers in a
single template file can be allowed in the future if deemed desirable.
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Ticket URL: <https://code.djangoproject.com/ticket/35636#comment:1>
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