[IMP] models: add an extension mechanism for attribute _depends on models
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@ -589,6 +589,10 @@ class BaseModel(object):
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inherits = dict(parent_class._inherits)
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inherits.update(cls._inherits)
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depends = dict(parent_class._depends)
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for m, fs in cls._depends.iteritems():
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depends.setdefault(m, []).extend(fs)
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old_constraints = parent_class._constraints
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new_constraints = cls._constraints
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# filter out from old_constraints the ones overridden by a
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@ -608,6 +612,7 @@ class BaseModel(object):
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'_columns': columns,
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'_defaults': defaults,
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'_inherits': inherits,
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'_depends': depends,
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'_constraints': constraints,
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'_sql_constraints': sql_constraints,
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}
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@ -621,6 +626,7 @@ class BaseModel(object):
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'_columns': dict(cls._columns),
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'_defaults': dict(cls._defaults),
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'_inherits': dict(cls._inherits),
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'_depends': dict(cls._depends),
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'_constraints': list(cls._constraints),
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'_sql_constraints': list(cls._sql_constraints),
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'_original_module': original_module,
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