37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
# Copyright 2019 3YOURMIND GmbH
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from django.db.migrations.operations.base import Operation
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IGNORE_MIGRATION_SQL = "select 1; -- dml ignores this migration"
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class IgnoreMigration(Operation):
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reversible = True
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# Must be true to be generated through the sqlmigrate command
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reduces_to_sql = True
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def state_forwards(self, app_label, state):
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pass
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def database_forwards(self, app_label, schema_editor, from_state, to_state):
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schema_editor.execute(IGNORE_MIGRATION_SQL)
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def database_backwards(self, app_label, schema_editor, from_state, to_state):
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schema_editor.execute(IGNORE_MIGRATION_SQL + "(reversed)")
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def describe(self):
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return "The Django migration linter will ignore this migration"
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