#5125: Add part about comparing values to templates documentation
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Reporter: [EMAIL PROTECTED] | Owner: jacob
Status: reopened | Component: Documentation
Version: SVN | Resolution:
Keywords: | Stage: Accepted
Has_patch: 0 | Needs_docs: 1
Needs_tests: 0 | Needs_better_patch: 0
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Comment (by ubernostrum):
Replying to [comment:2 anonymous]:
> i knew that, but there is no mention of ("if value gt value") in
templates doc.
Well, the problem there is how far do we go listing possible Python
constructs people might want to try in templates? There's literally an
infinite number of them.
If there's a documentation update, it needs to be along the lines of:
The template language is intended to provide the minimal necessary set of
features to allow you to express presentation; it is not a programming
language, and is not the same as the Python programming language. If
you're looking for a construct from Python -- operators, functions, method
calls, etc. -- it probably will not be available in the template language,
or will be implemented in a different form; for example, instead of
Python's `if` construct there is an `{% if %}` template tag, and the
template tag operates in a very different manner from the `if` construct
in Python. If you don't see the feature you want listed on this page, it
is not available by default in the template system (though you are free to
define a custom template tag to implement it).
In other words, instead of encouraging an "assume the template system does
it unless you hear otherwise" attitude, the docs need to point out that
the correct view is "assume the template system does '''not''' do it
unless you hear otherwise".
--
Ticket URL: <http://code.djangoproject.com/ticket/5125#comment:4>
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