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Fixed #365 -- Changed template.resolve_variable to resolve hard-coded strings. Thanks, davidschein 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@587 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty 2005-09-01 02:18:04 +00:00
parent 005e70387c
commit def5d10ffc
2 changed files with 34 additions and 24 deletions
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52
django/core/template.py
View File

@ -353,7 +353,8 @@ def get_filters_from_token(token):
def resolve_variable(path, context):
"""
Returns the resolved variable, which may contain attribute syntax, within
the given context.
the given context. The variable may be a hard-coded string (if it begins
and ends with single or double quote marks).
>>> c = {'article': {'section':'News'}}
>>> resolve_variable('article.section', c)
@ -369,30 +370,33 @@ def resolve_variable(path, context):
(The example assumes VARIABLE_ATTRIBUTE_SEPARATOR is '.')
"""
current = context
bits = path.split(VARIABLE_ATTRIBUTE_SEPARATOR)
while bits:
try: # dictionary lookup
current = current[bits[0]]
except (TypeError, AttributeError, KeyError):
try: # attribute lookup
current = getattr(current, bits[0])
if callable(current):
if getattr(current, 'alters_data', False):
current = ''
else:
try: # method call (assuming no args required)
current = current()
except SilentVariableFailure:
if path[0] in ('"', "'") and path[0] == path[-1]:
current = path[1:-1]
else:
current = context
bits = path.split(VARIABLE_ATTRIBUTE_SEPARATOR)
while bits:
try: # dictionary lookup
current = current[bits[0]]
except (TypeError, AttributeError, KeyError):
try: # attribute lookup
current = getattr(current, bits[0])
if callable(current):
if getattr(current, 'alters_data', False):
current = ''
except TypeError: # arguments *were* required
current = '' # invalid method call
except (TypeError, AttributeError):
try: # list-index lookup
current = current[int(bits[0])]
except (IndexError, ValueError, KeyError):
raise VariableDoesNotExist, "Failed lookup for key [%s] in %r" % (bits[0], current) # missing attribute
del bits[0]
else:
try: # method call (assuming no args required)
current = current()
except SilentVariableFailure:
current = ''
except TypeError: # arguments *were* required
current = '' # invalid method call
except (TypeError, AttributeError):
try: # list-index lookup
current = current[int(bits[0])]
except (IndexError, ValueError, KeyError):
raise VariableDoesNotExist, "Failed lookup for key [%s] in %r" % (bits[0], current) # missing attribute
del bits[0]
return current
def resolve_variable_with_filters(var_string, context):

6
tests/othertests/templates.py
View File

@ -110,6 +110,12 @@ TEMPLATE_TESTS = {
'ifequal02': ("{% ifequal a b %}yes{% endifequal %}", {"a": 1, "b": 1}, "yes"),
'ifequal03': ("{% ifequal a b %}yes{% else %}no{% endifequal %}", {"a": 1, "b": 2}, "no"),
'ifequal04': ("{% ifequal a b %}yes{% else %}no{% endifequal %}", {"a": 1, "b": 1}, "yes"),
'ifequal05': ("{% ifequal a 'test' %}yes{% else %}no{% endifequal %}", {"a": "test"}, "yes"),
'ifequal06': ("{% ifequal a 'test' %}yes{% else %}no{% endifequal %}", {"a": "no"}, "no"),
'ifequal07': ('{% ifequal a "test" %}yes{% else %}no{% endifequal %}', {"a": "test"}, "yes"),
'ifequal08': ('{% ifequal a "test" %}yes{% else %}no{% endifequal %}', {"a": "no"}, "no"),
'ifequal09': ('{% ifequal a "test" %}yes{% else %}no{% endifequal %}', {}, "no"),
'ifequal10': ('{% ifequal a b %}yes{% else %}no{% endifequal %}', {}, "yes"),
### IFNOTEQUAL TAG ########################################################
'ifnotequal01': ("{% ifnotequal a b %}yes{% endifnotequal %}", {"a": 1, "b": 2}, "yes"),