id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
8296	"Allow template parser to parse until ""complex"" block node"	Julien Phalip	nobody	"For info, this was brought up in [1].

Currently, with block tags, you can only parse until a ""simple"" closure tag. For example: `{% endif %}` or `{% endfor %}`.

Now, it would be nice if you could parse until something more ""complex"" like `{% elseif blah and blahblah %}`. By ""complex"" I mean a tag that requires some parameters.

Here I'm not asking for an `elseif` tag in particular, but I'd like to allow the parser to also consider ""complex"" closure tags.

For example, a direct application of this would be a suggestion for a `{% withblock %}` tag. Here's a suggested syntax:

{{{
{% withblock as myurl %}
   {% url path.to.some_view arg1,arg2,name1=value1 %}
{% and as var %}
   {% whatever %}
{% in %}
       Click the link: <a href=""{{ myurl }}"">{{ var }}</a>.
{% endwithblock %}
}}}

Currently the `{% and as var %}` tag cannot be recognized. The problem is in `django.template.Parser.parse()`:

{{{
...
elif token.token_type == TOKEN_BLOCK:
    if token.contents in parse_until:
    ...
}}}

It basically checks if the tag's hard string name is in the list. The attached patch, which is *backward compatible*, only looks at the first piece of text in the node, namely the tag's name. With that, in your tag you could parse the block like follows:

{{{
    nodelist = parser.parse(('and', 'in')) # Parse until {% and as var %} or {% in %} 
}}}


[1] http://groups.google.com/group/django-developers/browse_thread/thread/c81a9fe156af71e7"		closed	Template system	dev		duplicate		me@…	Design decision needed	1	0	0	0	0	0