Class DatabaseSchemaEditor

Declaration

Methods

• ▶ def __enter__(self) override

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.__enter__.

• ▶ def __exit__(self, exc_type, exc_value, traceback) override

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.__exit__.

• ▶ def add_constraint(self, model, constraint) override

  inherited doc Add a constraint to a model.

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.add_constraint.

• ▶ def add_field(self, model, field) override

  Create a field on a model. Usually involves adding a column, but may involve adding a table instead (for M2M fields).

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.add_field.

  Overrides

  This method is overriden in:

  • django.contrib.gis.db.backends.spatialite.schema.SpatialiteSchemaEditor
• ▶ def alter_db_table(self, model, old_db_table, new_db_table, disable_constraints=True) override

  inherited doc Rename the table a model points to.

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.alter_db_table.

  Overrides

  This method is overriden in:

  • django.contrib.gis.db.backends.spatialite.schema.SpatialiteSchemaEditor
• ▶ def alter_field(self, model, old_field, new_field, strict=False) override

  inherited doc Allow a field's type, uniqueness, nullability, default, column,

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.alter_field.

  constraints, etc. to be modified.
  `old_field` is required to compute the necessary changes.
  If `strict` is True, raise errors if the old column does not match
  `old_field` precisely.

• ▶ def delete_model(self, model, handle_autom2m=True) override

  inherited doc Delete a model from the database.

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.delete_model.

  Overrides

  This method is overriden in:

  • django.contrib.gis.db.backends.spatialite.schema.SpatialiteSchemaEditor
• ▶ def quote_value(self, value) override

  inherited doc Return a quoted version of the value so it's safe to use in an SQL

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.quote_value.

  string. This is not safe against injection from user code; it is
  intended only for use in making SQL scripts or preparing default values
  for particularly tricky backends (defaults are not user-defined, though,
  so this is safe).

• ▶ def remove_constraint(self, model, constraint) override

  inherited doc Remove a constraint from a model.

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.remove_constraint.

• ▶ def remove_field(self, model, field) override

  Remove a field from a model. Usually involves deleting a column, but for M2Ms may involve deleting a table.

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  This method overrides django.db.backends.base.schema.BaseDatabaseSchemaEditor.remove_field.

  Overrides

  This method is overriden in:

  • django.contrib.gis.db.backends.spatialite.schema.SpatialiteSchemaEditor

Inherited methods

• Methods inherited from django.db.backends.base.schema.BaseDatabaseSchemaEditor:
  __init__, add_index, alter_db_tablespace, alter_index_together, alter_unique_together, column_sql, create_model, effective_default, execute, prepare_default, quote_name, remove_index, remove_procedure, skip_default, table_sql

Subclasses

• django.contrib.gis.db.backends.spatialite.schema.SpatialiteSchemaEditor

Reexports

• Imported in django.contrib.gis.db.backends.spatialite.schema.
• Imported in django.db.backends.sqlite3.base.

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