![]() Unlike with Eloquent where the model extends a base Model class, a Doctrine entity is a plain PHP class that does not extend anything. In Doctrine we use Entities to represent our application objects. Let’s see how we can install Doctrine for Laravel, and how to configure and use it. The result? The developer can now focus on building an object that is nearer to the real world situation, and not to the database system chosen for the job.Įloquent is an implementation of the Active Record pattern, and Doctrine is an implementation of Data Mapper. This means that objects in the software are not closely related to the data source, with great improvement in terms of responsibility isolation. The Data Mapper consists of the presence of an intermediate layer which, working in both directions, provides access to the data source on one hand, and a good abstraction from it on the other. Now, in the same book we mentioned before, Martin Fowler explained another architectural pattern: the Data Mapper. It has to be said that a part of this problem can be reduced (not solved) with mocking and a good use of dependency injection. If the model is tightly coupled to the database, building a test without it can be more difficult. ![]() The other main criticism is a direct consequence of the first: testability. There, Active Record doesn’t help us achieve a good level of abstraction from the data source. For many little projects this approach is more than fine, but what if our software grows in complexity? We could stumble upon the need for more classes, not always related to a specific table in our database. However, with time, this pattern encountered many criticisms:Īctive Record is about a strong coupling between database operations and the classes in our software. To simplify and explain things, this pattern assumes that a single row in the database is treated like an object in our software. A frequently used architectural pattern, named by Martin Fowler in his ultra-famous book “Patterns of Enterprise Application Architecture”. What we’re using here is the so called “Active Record” pattern. We all love its fluent and easy syntax, and we all know snippets like the following: $user = new App \User $user -> name = 'Francesco' $user -> email = $user -> save ( ) ![]() Those of us who have used Laravel at least once, have probably used Eloquent.
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