delete () Updating only the model’s timestamps You can also run a delete query on a set of models: affected_rows = User. delete () Deleting an existing model by key User. To delete a model, simply call the delete model: user = User. update ( status = 2 ) Deleting an existing model You can also run updates as queries against a set of models: affected_rows = User. first_or_new ( name = 'John' ) Updating a retrieved model user = User. first_or_create ( name = 'John' ) # Retrieve the user by attributes, or instantiate it if it does not exist user = User. create ( name = 'John' ) # Retrieve the user by attributes, or create it if it does not exist user = User. id Using the create method # Create a new user in the database user = User. The object’s id attribute: inserted_id = user. You can also use the create method to save a model in a single line, but you will need to specifyĮither the _fillable_ or _guarded_ property on the model since all models are protected againstĪfter saving or creating a new model with auto-incrementing IDs, you can retrieve the ID by accessing To create a new record in the database, simply create a new model instance and call the save method. You can also block all attributes from mass-assignment: _guarded_ = Insert, update and delete Saving a new model The _guarded_ is the inverse and acts as “blacklist”. class User ( Model ): _fillable_ = Defining guarded attributes on a model The _fillable_ property specifies which attributes can be mass-assigned. To get started, set the _fillable_ or _guarded_ properties on your model. Since the user is then free to modify any and all of the model’s attributes.įor this reason, all models protect against mass-assignment by default. Though convenient, this can be a serious security concern when passing user input into a model, These attributes are then assigned to the model via mass-assignment. When creating a new model, you pass attributes to the model constructor. If you are using read / write connections, you can force the query to use the “write” connection You can specify which database connection to use when querying a model by using the on method: user = User. If you need to process a lot of records, you can use the chunk method to avoidĬonsuming a lot of RAM: for users in User. where_raw ( 'age > ? and votes = 100', ). If you feel limited by the builder’s fluent interface, you can use the where_raw method: users = User. You can also use the query builder aggregate functions: count = User. name ) Querying using models users = User. all () Retrieving a record by primary key user = User. Set the _timestamps_ property on your model to False. If you do not wish to have these columns automatically maintained, Note that you will need to place updated_at and created_at columns on your table by default. Once a model is defined, you are ready to start retrieving and creating records in your table. Likewise, you can define a _connection_ property to override the name of the databaseĬonnection that should be used when using the model. You can define a _primary_key_ property to override this convention. The ORM will also assume that each table has a primary key column named id. You can specify a custom table by defining a _table_ property on your model: class User ( Model ): _table_ = 'my_users' In this case, the ORM will assume the User model stores records in the users table. The plural “snake case” name of theĬlass name will be used as the table name unless another name is explicitly specified. Note that we did not tell the ORM which table to use for the User model. set_connection_resolver ( db ) Defining a model class User ( Model ): pass from eloquent import DatabaseManager, Model config = db = DatabaseManager ( config ) Model. Sqlite: The sqlite3 module is bundled with Python by defaultĪll you need to get you started is the configuration describing your database connectionsĪnd passing it to a DatabaseManager instance. So you must install them in order to connect to corresponding databases: The different dbapi packages are not part of the package dependencies, Install from source using the official repository ( ) The easier and more straightforward is to use pip You can install Eloquent in 2 different ways: The full documentation is available here: Installation It is inspired by the database part of the Laravel framework,īut largely modified to be more pythonic. The Eloquent ORM provides a simple yet beautiful ActiveRecord implementation.
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