Allow blocks with same name in if/else

[Ahmed Saoudi]

Apparently, the Django template system doesn't allow for a block to appear more than once even within an if/else conditional, even if this means that, practically, the block will appear only once:

{% if condition %}
  {% block title %}title with {{ variable }}{% endblock %}
{% else %}
  {% block title %}static title{% endblock %}
{% endif %}

Allowing the block to appear more than once in such a setting may, IMHO; render things way more simple to handle.

[Mariusz Felisiak]

Thanks for this ticket, however this limitation is ​documented:

Finally, note that you can't define multiple block tags with the same name in the same template. This limitation exists because a block tag works in "both" directions. That is, a block tag doesn't just provide a hole to fill - it also defines the content that fills the hole in the parent. If there were two similarly-named block tags in a template, that template's parent wouldn't know which one of the blocks' content to use.

Moreover, this was already ​discussed on the mailing list. See related tickets closed as "wontfix": #20219, #24232, and #4529.