![]() The whenLoaded method may be used to conditionally load a relationship. Ultimately, this makes it easier to avoid "N+1" query problems within your resources. This allows your controller to decide which relationships should be loaded on the model and your resource can easily include them only when they have actually been loaded. In addition to conditionally loading attributes, you may conditionally include relationships on your resource responses based on if the relationship has already been loaded on the model. Furthermore, it should not be used within arrays with numeric keys that are not ordered sequentially. The mergeWhen method should not be used within arrays that mix string and numeric keys. Resources extend the Illuminate\Http\Resources\Json\JsonResource class:Īgain, if the given condition is false, these attributes will be removed from the resource response before it is sent to the client. By default, resources will be placed in the app/Http/Resources directory of your application. To generate a resource class, you may use the make:resource Artisan command. Of course, you may always convert Eloquent models or collections to JSON using their toJson methods however, Eloquent resources provide more granular and robust control over the JSON serialization of your models and their relationships. Eloquent's resource classes allow you to expressively and easily transform your models and model collections into JSON. For example, you may wish to display certain attributes for a subset of users and not others, or you may wish to always include certain relationships in the JSON representation of your models. You may do this using the $fillable property on the model.When building an API, you may need a transformation layer that sits between your Eloquent models and the JSON responses that are actually returned to your application's users. So, in this case, Eloquent assumes that the Phone model has a userid column. Eloquent determines the foreign key name by examining the name of the relationship method and suffixing the method name with id. So, to get started, you should define which model attributes you want to make mass assignable. When invoking the user method, Eloquent will attempt to find a User model that has an id which matches the userid column on the Phone model. ![]() For example, a malicious user might send an is_admin parameter through an HTTP request, which is then passed into your model's create method, allowing the user to escalate themselves to an administrator. However, before doing so, you will need to specify either a fillable or guarded attribute on the model, as all Eloquent models protect against mass-assignment by default.Ī mass-assignment vulnerability occurs when a user passes an unexpected HTTP parameter through a request, and that parameter changes a column in your database you did not expect. ![]() To get started, specify the desired date format within the cast declaration. You may now individually customize the format of Eloquent date cast columns. The inserted model instance will be returned to you from the method. In Laravel 5.6, relationships that were loaded on the model when it was queued are automatically re-loaded when the job is processed by the queue. You may also use the create method to save a new model in a single line. This is because the models are never actually retrieved when issuing a mass update. When issuing a mass update via Eloquent, the saved and updated model events will not be fired for the updated models. The update method expects an array of column and value pairs representing the columns that should be updated. The easiest way to create a model instance is using the make:model Artisan command: All Eloquent models extend Illuminate\Database\Eloquent\Model class. Models typically live in the app directory, but you are free to place them anywhere that can be auto-loaded according to your composer.json file. ![]() To get started, let's create an Eloquent model. For more information on configuring your database, check out the documentation. Models allow you to query for data in your tables, as well as insert new records into the table.īefore getting started, be sure to configure a database connection in config/database.php. Each database table has a corresponding "Model" which is used to interact with that table. The Eloquent ORM included with Laravel provides a beautiful, simple ActiveRecord implementation for working with your database.
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