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Raise exceptions if a function is overridden by a new endpoint. This fixes #570

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This commit is contained in:
Armin Ronacher 2012-10-07 17:12:16 +02:00
parent e2b3f07d7c
commit 661ee54bc2
3 changed files with 23 additions and 1 deletions
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5
flask/app.py
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@ -942,8 +942,13 @@ class Flask(_PackageBoundObject):
rule = self.url_rule_class(rule, methods=methods, **options)
rule.provide_automatic_options = provide_automatic_options
self.url_map.add(rule)
if view_func is not None:
old_func = self.view_functions.get(endpoint)
if old_func is not None and old_func is not view_func:
raise AssertionError('View function mapping is overwriting an '
'existing endpoint function: %s' % endpoint)
self.view_functions[endpoint] = view_func
def route(self, rule, **options):