app/django/db/models/signals.py
author Sverre Rabbelier <srabbelier@gmail.com>
Sat, 06 Dec 2008 14:23:53 +0000
changeset 679 77a286ff6667
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Introduce dynamic scope_path regexps Instead of relying on scope_path's being "one slash deep", we should instead allow for either: 1. scope_paths that have a pre-defined depth 2. scope_paths that can be arbitrarily deep We achieve 1 by setting an entities scope_logic to another logic module. We then recursively call getScopeDepth until we get to the topmost entity (that is, an unscoped entity). A little different is the solution to 2, since some entities can have an arbitrarily deep scope (such as Documents), we need to have some way of signaling this to getScopePattern. A clean solution is to return None, rather than a number. If None is returned, the SCOPE_PATH_ARG_PATTERN is returned as regexp instead, which will match an arbitrarily deeply nested scope. The solution for 2 requires that we return None somewhere in the scope_logic chain, the most straight forward method to do so is to override getScopeDepth anywhere such a scope is needed and make it return None. A more elegant solution however, is to set the scope_logic to that module in all entities that require it. Patch by: Sverre Rabbelier
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from django.dispatch import Signal
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class_prepared = Signal(providing_args=["class"])
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pre_init = Signal(providing_args=["instance", "args", "kwargs"])
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post_init = Signal(providing_args=["instance"])
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pre_save = Signal(providing_args=["instance", "raw"])
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post_save = Signal(providing_args=["instance", "raw", "created"])
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pre_delete = Signal(providing_args=["instance"])
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post_delete = Signal(providing_args=["instance"])
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post_syncdb = Signal(providing_args=["class", "app", "created_models", "verbosity", "interactive"])