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Fixed #26316 -- Factored duplicated code in model/field migration operations.

This commit is contained in:
Akshesh 2016-03-04 03:46:22 +05:30 committed by Tim Graham
parent 87994b40b3
commit b886f166b3
2 changed files with 9 additions and 42 deletions
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27
django/db/migrations/operations/fields.py
View File

@ -26,6 +26,12 @@ class FieldOperation(Operation):
def is_same_field_operation(self, operation): def is_same_field_operation(self, operation):
return self.is_same_model_operation(operation) and self.name_lower == operation.name_lower return self.is_same_model_operation(operation) and self.name_lower == operation.name_lower
def references_model(self, name, app_label=None):
return name.lower() == self.model_name_lower
def references_field(self, model_name, name, app_label=None):
return self.references_model(model_name) and name.lower() == self.name_lower
def reduce(self, operation, in_between, app_label=None): def reduce(self, operation, in_between, app_label=None):
return ( return (
super(FieldOperation, self).reduce(operation, in_between, app_label=app_label) or super(FieldOperation, self).reduce(operation, in_between, app_label=app_label) or
@ -89,12 +95,6 @@ class AddField(FieldOperation):
def describe(self): def describe(self):
return "Add field %s to %s" % (self.name, self.model_name) return "Add field %s to %s" % (self.name, self.model_name)
def references_model(self, name, app_label=None):
return name.lower() == self.model_name_lower
def references_field(self, model_name, name, app_label=None):
return self.references_model(model_name) and name.lower() == self.name_lower
def reduce(self, operation, in_between, app_label=None): def reduce(self, operation, in_between, app_label=None):
if isinstance(operation, FieldOperation) and self.is_same_field_operation(operation): if isinstance(operation, FieldOperation) and self.is_same_field_operation(operation):
if isinstance(operation, AlterField): if isinstance(operation, AlterField):
@ -156,12 +156,6 @@ class RemoveField(FieldOperation):
def describe(self): def describe(self):
return "Remove field %s from %s" % (self.name, self.model_name) return "Remove field %s from %s" % (self.name, self.model_name)
def references_model(self, name, app_label=None):
return name.lower() == self.model_name_lower
def references_field(self, model_name, name, app_label=None):
return self.references_model(model_name) and name.lower() == self.name_lower
class AlterField(FieldOperation): class AlterField(FieldOperation):
""" """
@ -226,12 +220,6 @@ class AlterField(FieldOperation):
def describe(self): def describe(self):
return "Alter field %s on %s" % (self.name, self.model_name) return "Alter field %s on %s" % (self.name, self.model_name)
def references_model(self, name, app_label=None):
return name.lower() == self.model_name_lower
def references_field(self, model_name, name, app_label=None):
return self.references_model(model_name) and name.lower() == self.name_lower
def reduce(self, operation, in_between, app_label=None): def reduce(self, operation, in_between, app_label=None):
if isinstance(operation, RemoveField) and self.is_same_field_operation(operation): if isinstance(operation, RemoveField) and self.is_same_field_operation(operation):
return [operation] return [operation]
@ -316,9 +304,6 @@ class RenameField(FieldOperation):
def describe(self): def describe(self):
return "Rename field %s on %s to %s" % (self.old_name, self.model_name, self.new_name) return "Rename field %s on %s to %s" % (self.old_name, self.model_name, self.new_name)
def references_model(self, name, app_label=None):
return name.lower() == self.model_name_lower
def references_field(self, model_name, name, app_label=None): def references_field(self, model_name, name, app_label=None):
return self.references_model(model_name) and ( return self.references_model(model_name) and (
name.lower() == self.old_name_lower or name.lower() == self.old_name_lower or

24
django/db/migrations/operations/models.py
View File

@ -20,6 +20,9 @@ class ModelOperation(Operation):
def name_lower(self): def name_lower(self):
return self.name.lower() return self.name.lower()
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def reduce(self, operation, in_between, app_label=None): def reduce(self, operation, in_between, app_label=None):
return ( return (
super(ModelOperation, self).reduce(operation, in_between, app_label=app_label) or super(ModelOperation, self).reduce(operation, in_between, app_label=app_label) or
@ -217,9 +220,6 @@ class DeleteModel(ModelOperation):
if self.allow_migrate_model(schema_editor.connection.alias, model): if self.allow_migrate_model(schema_editor.connection.alias, model):
schema_editor.create_model(model) schema_editor.create_model(model)
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def describe(self): def describe(self):
return "Delete model %s" % (self.name, ) return "Delete model %s" % (self.name, )
@ -421,9 +421,6 @@ class AlterModelTable(ModelOperation):
def database_backwards(self, app_label, schema_editor, from_state, to_state): def database_backwards(self, app_label, schema_editor, from_state, to_state):
return self.database_forwards(app_label, schema_editor, from_state, to_state) return self.database_forwards(app_label, schema_editor, from_state, to_state)
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def describe(self): def describe(self):
return "Rename table for %s to %s" % (self.name, self.table) return "Rename table for %s to %s" % (self.name, self.table)
@ -490,9 +487,6 @@ class AlterUniqueTogether(FieldRelatedOptionOperation):
def database_backwards(self, app_label, schema_editor, from_state, to_state): def database_backwards(self, app_label, schema_editor, from_state, to_state):
return self.database_forwards(app_label, schema_editor, from_state, to_state) return self.database_forwards(app_label, schema_editor, from_state, to_state)
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def references_field(self, model_name, name, app_label=None): def references_field(self, model_name, name, app_label=None):
return ( return (
self.references_model(model_name, app_label) and self.references_model(model_name, app_label) and
@ -547,9 +541,6 @@ class AlterIndexTogether(FieldRelatedOptionOperation):
def database_backwards(self, app_label, schema_editor, from_state, to_state): def database_backwards(self, app_label, schema_editor, from_state, to_state):
return self.database_forwards(app_label, schema_editor, from_state, to_state) return self.database_forwards(app_label, schema_editor, from_state, to_state)
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def references_field(self, model_name, name, app_label=None): def references_field(self, model_name, name, app_label=None):
return ( return (
self.references_model(model_name, app_label) and self.references_model(model_name, app_label) and
@ -609,9 +600,6 @@ class AlterOrderWithRespectTo(FieldRelatedOptionOperation):
def database_backwards(self, app_label, schema_editor, from_state, to_state): def database_backwards(self, app_label, schema_editor, from_state, to_state):
self.database_forwards(app_label, schema_editor, from_state, to_state) self.database_forwards(app_label, schema_editor, from_state, to_state)
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def references_field(self, model_name, name, app_label=None): def references_field(self, model_name, name, app_label=None):
return ( return (
self.references_model(model_name, app_label) and self.references_model(model_name, app_label) and
@ -674,9 +662,6 @@ class AlterModelOptions(ModelOptionOperation):
def database_backwards(self, app_label, schema_editor, from_state, to_state): def database_backwards(self, app_label, schema_editor, from_state, to_state):
pass pass
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def describe(self): def describe(self):
return "Change Meta options on %s" % (self.name, ) return "Change Meta options on %s" % (self.name, )
@ -710,8 +695,5 @@ class AlterModelManagers(ModelOptionOperation):
def database_backwards(self, app_label, schema_editor, from_state, to_state): def database_backwards(self, app_label, schema_editor, from_state, to_state):
pass pass
def references_model(self, name, app_label=None):
return name.lower() == self.name_lower
def describe(self): def describe(self):
return "Change managers on %s" % (self.name, ) return "Change managers on %s" % (self.name, )