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How to use drop_foreign_key_constraint method in autotest

Best Python code snippet using autotest_python

__init__.py

Source:__init__.py

...43            local_cols=fk['constrained_columns'],44            remote_cols=fk['referred_columns'],45            ondelete=fk['options'].get('ondelete')46        )47def drop_foreign_key_constraint(table_name, fk_constraints):48    for fk in fk_constraints:49        op.drop_constraint(50            constraint_name=fk['name'],51            table_name=table_name,52            type_='foreignkey'53        )54@contextlib.contextmanager55def modify_foreign_keys_constraint(table_names):56    inspector = reflection.Inspector.from_engine(op.get_bind())57    try:58        for table in table_names:59            fk_constraints = inspector.get_foreign_keys(table)60            drop_foreign_key_constraint(table, fk_constraints)61        yield62    finally:63        for table in table_names:64            fk_constraints = inspector.get_foreign_keys(table)65            create_foreign_key_constraint(table, fk_constraints)66def modify_foreign_keys_constraint_with_col_change(67        table_name, old_local_col, new_local_col, existing_type,68        nullable=False):69    inspector = reflection.Inspector.from_engine(op.get_bind())70    fk_constraints = inspector.get_foreign_keys(table_name)71    for fk in fk_constraints:72        if old_local_col in fk['constrained_columns']:73            drop_foreign_key_constraint(table_name, [fk])74    op.alter_column(table_name, old_local_col,75                    new_column_name=new_local_col,76                    existing_type=existing_type,77                    nullable=nullable)78    fk_constraints = inspector.get_foreign_keys(table_name)79    for fk in fk_constraints:80        for i in range(len(fk['constrained_columns'])):81            if old_local_col == fk['constrained_columns'][i]:82                fk['constrained_columns'][i] = new_local_col83                create_foreign_key_constraint(table_name, [fk])...

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