测试gitnore
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ladeng07
@@ -1,3 +1,4 @@
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from django.db.migrations import operations
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from django.db.migrations.utils import get_migration_name_timestamp
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from django.db.transaction import atomic
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@@ -12,8 +13,7 @@ class Migration:
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and subclass it as a class called Migration. It will have one or more
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of the following attributes:
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- operations: A list of Operation instances, probably from
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django.db.migrations.operations
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- operations: A list of Operation instances, probably from django.db.migrations.operations
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- dependencies: A list of tuples of (app_path, migration_name)
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- run_before: A list of tuples of (app_path, migration_name)
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- replaces: A list of migration_names
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@@ -61,9 +61,9 @@ class Migration:
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def __eq__(self, other):
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return (
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isinstance(other, Migration)
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and self.name == other.name
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and self.app_label == other.app_label
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isinstance(other, Migration) and
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self.name == other.name and
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self.app_label == other.app_label
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)
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def __repr__(self):
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@@ -105,8 +105,7 @@ class Migration:
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schema_editor.collected_sql.append("--")
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if not operation.reduces_to_sql:
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schema_editor.collected_sql.append(
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"-- MIGRATION NOW PERFORMS OPERATION THAT CANNOT BE WRITTEN AS "
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"SQL:"
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"-- MIGRATION NOW PERFORMS OPERATION THAT CANNOT BE WRITTEN AS SQL:"
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)
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schema_editor.collected_sql.append("-- %s" % operation.describe())
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schema_editor.collected_sql.append("--")
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@@ -116,21 +115,15 @@ class Migration:
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old_state = project_state.clone()
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operation.state_forwards(self.app_label, project_state)
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# Run the operation
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atomic_operation = operation.atomic or (
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self.atomic and operation.atomic is not False
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)
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atomic_operation = operation.atomic or (self.atomic and operation.atomic is not False)
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if not schema_editor.atomic_migration and atomic_operation:
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# Force a transaction on a non-transactional-DDL backend or an
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# atomic operation inside a non-atomic migration.
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with atomic(schema_editor.connection.alias):
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operation.database_forwards(
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self.app_label, schema_editor, old_state, project_state
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)
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operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
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else:
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# Normal behaviour
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operation.database_forwards(
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self.app_label, schema_editor, old_state, project_state
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)
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operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
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return project_state
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def unapply(self, project_state, schema_editor, collect_sql=False):
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@@ -153,9 +146,7 @@ class Migration:
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for operation in self.operations:
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# If it's irreversible, error out
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if not operation.reversible:
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raise IrreversibleError(
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"Operation %s in %s is not reversible" % (operation, self)
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)
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raise IrreversibleError("Operation %s in %s is not reversible" % (operation, self))
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# Preserve new state from previous run to not tamper the same state
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# over all operations
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new_state = new_state.clone()
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@@ -169,28 +160,21 @@ class Migration:
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schema_editor.collected_sql.append("--")
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if not operation.reduces_to_sql:
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schema_editor.collected_sql.append(
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"-- MIGRATION NOW PERFORMS OPERATION THAT CANNOT BE WRITTEN AS "
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"SQL:"
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"-- MIGRATION NOW PERFORMS OPERATION THAT CANNOT BE WRITTEN AS SQL:"
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)
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schema_editor.collected_sql.append("-- %s" % operation.describe())
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schema_editor.collected_sql.append("--")
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if not operation.reduces_to_sql:
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continue
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atomic_operation = operation.atomic or (
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self.atomic and operation.atomic is not False
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)
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atomic_operation = operation.atomic or (self.atomic and operation.atomic is not False)
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if not schema_editor.atomic_migration and atomic_operation:
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# Force a transaction on a non-transactional-DDL backend or an
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# atomic operation inside a non-atomic migration.
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with atomic(schema_editor.connection.alias):
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operation.database_backwards(
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self.app_label, schema_editor, from_state, to_state
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)
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operation.database_backwards(self.app_label, schema_editor, from_state, to_state)
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else:
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# Normal behaviour
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operation.database_backwards(
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self.app_label, schema_editor, from_state, to_state
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)
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operation.database_backwards(self.app_label, schema_editor, from_state, to_state)
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return project_state
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def suggest_name(self):
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@@ -199,22 +183,16 @@ class Migration:
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are not guaranteed to be unique, but put some effort into the fallback
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name to avoid VCS conflicts if possible.
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"""
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if self.initial:
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return "initial"
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raw_fragments = [op.migration_name_fragment for op in self.operations]
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fragments = [name for name in raw_fragments if name]
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if not fragments or len(fragments) != len(self.operations):
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return "auto_%s" % get_migration_name_timestamp()
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name = fragments[0]
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for fragment in fragments[1:]:
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new_name = f"{name}_{fragment}"
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if len(new_name) > 52:
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name = f"{name}_and_more"
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break
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name = new_name
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name = None
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if len(self.operations) == 1:
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name = self.operations[0].migration_name_fragment
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elif (
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len(self.operations) > 1 and
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all(isinstance(o, operations.CreateModel) for o in self.operations)
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):
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name = '_'.join(sorted(o.migration_name_fragment for o in self.operations))
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if name is None:
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name = 'initial' if self.initial else 'auto_%s' % get_migration_name_timestamp()
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return name
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