#24284: List-index lookup does not function as advertised
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Reporter: mattkahl | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Documentation | Version: 1.6
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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In the Django template language docs
(https://docs.djangoproject.com/en/1.6/ref/templates/api/) the list-index
lookup syntax is advertised as {{{list[index]}}} but a
{{{TemplateSyntaxError}}} is thrown when using that syntax. The example
provided shows {{{list.index}}} which, while arguably less intuitive, does
work.
{{{#!python
>>> from django.template import Template, Context
>>> Template("The first element is {{ items[0]
}}").render(Context({"items":["spam"]}))
Traceback (most recent call last):
File "<input>", line 1, in <module>
File "/Users/mattkahl/.venvs/sp_web/lib/python2.7/site-
packages/django/template/base.py", line 125, in __init__
self.nodelist = compile_string(template_string, origin)
File "/Users/mattkahl/.venvs/sp_web/lib/python2.7/site-
packages/django/template/base.py", line 153, in compile_string
return parser.parse()
File "/Users/mattkahl/.venvs/sp_web/lib/python2.7/site-
packages/django/template/base.py", line 254, in parse
filter_expression = self.compile_filter(token.contents)
File "/Users/mattkahl/.venvs/sp_web/lib/python2.7/site-
packages/django/template/base.py", line 360, in compile_filter
return FilterExpression(token, self)
File "/Users/mattkahl/.venvs/sp_web/lib/python2.7/site-
packages/django/template/base.py", line 577, in __init__
"from '%s'" % (token[upto:], token))
TemplateSyntaxError: Could not parse the remainder: '[0]' from 'items[0]'
>>> Template("The first element is {{ items.0
}}").render(Context({"items":["spam"]}))
u'The first element is spam'
}}}
Tested in 1.6. The {{{list[index]}}} syntax is referenced all the way back
to the 1.3 docs.
This is either a feature request, a bug report, or a documentation error.
--
Ticket URL: <https://code.djangoproject.com/ticket/24284>
Django <https://code.djangoproject.com/>
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