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Fixed #14262 -- Added new assignment_tag as a simple way to assign the result of a template tag to a context variable. Thanks, Julien Phalip.

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@16149 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Jannis Leidel 2011-05-03 11:52:42 +00:00
parent 8ce352c21d
commit 950e05c3ff
5 changed files with 215 additions and 1 deletions
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53
tests/regressiontests/templates/custom.py
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@ -1,3 +1,5 @@
from __future__ import with_statement
from django import template
from django.utils.unittest import TestCase
from templatetags import custom
@ -102,3 +104,54 @@ class CustomTagTests(TestCase):
c.use_l10n = True
self.assertEquals(t.render(c).strip(), u'True')
def test_assignment_tags(self):
c = template.Context({'value': 42})
t = template.Template('{% load custom %}{% assignment_no_params as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), u'The result is: assignment_no_params - Expected result')
t = template.Template('{% load custom %}{% assignment_one_param 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), u'The result is: assignment_one_param - Expected result: 37')
t = template.Template('{% load custom %}{% assignment_explicit_no_context 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), u'The result is: assignment_explicit_no_context - Expected result: 37')
t = template.Template('{% load custom %}{% assignment_no_params_with_context as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), u'The result is: assignment_no_params_with_context - Expected result (context value: 42)')
t = template.Template('{% load custom %}{% assignment_params_and_context 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), u'The result is: assignment_params_and_context - Expected result (context value: 42): 37')
self.assertRaisesRegexp(template.TemplateSyntaxError,
"'assignment_one_param' tag takes at least 2 arguments and the second last argument must be 'as'",
template.Template, '{% load custom %}{% assignment_one_param 37 %}The result is: {{ var }}')
self.assertRaisesRegexp(template.TemplateSyntaxError,
"'assignment_one_param' tag takes at least 2 arguments and the second last argument must be 'as'",
template.Template, '{% load custom %}{% assignment_one_param 37 as %}The result is: {{ var }}')
self.assertRaisesRegexp(template.TemplateSyntaxError,
"'assignment_one_param' tag takes at least 2 arguments and the second last argument must be 'as'",
template.Template, '{% load custom %}{% assignment_one_param 37 ass var %}The result is: {{ var }}')
def test_assignment_tag_registration(self):
# Test that the decorators preserve the decorated function's docstring, name and attributes.
self.verify_tag(custom.assignment_no_params, 'assignment_no_params')
self.verify_tag(custom.assignment_one_param, 'assignment_one_param')
self.verify_tag(custom.assignment_explicit_no_context, 'assignment_explicit_no_context')
self.verify_tag(custom.assignment_no_params_with_context, 'assignment_no_params_with_context')
self.verify_tag(custom.assignment_params_and_context, 'assignment_params_and_context')
def test_assignment_tag_missing_context(self):
# That the 'context' parameter must be present when takes_context is True
def an_assignment_tag_without_parameters(arg):
"""Expected __doc__"""
return "Expected result"
register = template.Library()
decorator = register.assignment_tag(takes_context=True)
self.assertRaisesRegexp(template.TemplateSyntaxError,
"Any tag function decorated with takes_context=True must have a first argument of 'context'",
decorator, an_assignment_tag_without_parameters)