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make SchemaEditor.alter_field() populate default on NULL to NOT NULL change #132

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Merged
merged 1 commit into from
Sep 23, 2024
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Merged

make SchemaEditor.alter_field() populate default on NULL to NOT NULL change #132

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2 changes: 0 additions & 2 deletions django_mongodb/features.py
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Original file line number Diff line number Diff line change
Expand Up @@ -103,14 +103,12 @@ class DatabaseFeatures(BaseDatabaseFeatures):
"schema.tests.SchemaTests.test_text_field_with_db_index",
# AlterField
"schema.tests.SchemaTests.test_alter_field_add_index_to_integerfield",
"schema.tests.SchemaTests.test_alter_field_default_dropped",
"schema.tests.SchemaTests.test_alter_field_fk_keeps_index",
"schema.tests.SchemaTests.test_alter_field_fk_to_o2o",
"schema.tests.SchemaTests.test_alter_field_o2o_keeps_unique",
"schema.tests.SchemaTests.test_alter_field_o2o_to_fk",
"schema.tests.SchemaTests.test_alter_int_pk_to_int_unique",
"schema.tests.SchemaTests.test_alter_not_unique_field_to_primary_key",
"schema.tests.SchemaTests.test_alter_null_to_not_null",
# AlterField (db_index)
"schema.tests.SchemaTests.test_alter_renames_index",
"schema.tests.SchemaTests.test_indexes",
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11 changes: 8 additions & 3 deletions django_mongodb/schema.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,11 +38,16 @@ def _alter_field(
new_db_params,
strict=False,
):
collection = self.connection.database[model._meta.db_table]
# Have they renamed the column?
if old_field.column != new_field.column:
self.connection.database[model._meta.db_table].update_many(
{}, {"$rename": {old_field.column: new_field.column}}
)
collection.update_many({}, {"$rename": {old_field.column: new_field.column}})
# Replace NULL with the field default if the field and was changed from
# NULL to NOT NULL.
if new_field.has_default() and old_field.null and not new_field.null:
column = new_field.column
default = self.effective_default(new_field)
collection.update_many({column: {"$eq": None}}, [{"$set": {column: default}}])

def remove_field(self, model, field):
# Remove implicit M2M tables.
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