![]() Collectionsįor Eloquent methods like all and get which retrieve multiple results, an instance of Illuminate\Database\Eloquent\Collection will be returned. You may use any of these methods in your Eloquent queries. Tip!! Since Eloquent models are query builders, you should review all of the methods available on the query builder. Since each Eloquent model serves as a query builder, you may also add constraints to queries, and then use the get method to retrieve the results: $flights = App\Flight::where('active', 1) The Eloquent all method will return all of the results in the model's table. Now, let's look at an example Flight model, which we will use to retrieve and store information from our flights database table: name Php artisan make:model Flight -m Eloquent Model Conventions This is because user is an instance of the User model, and right on that model we added a profile () method. In this example, our Laravel eloquent query uses the if statement which determines from the request if the filter value is either verified or unverified users. Laravel Eloquent Query with If Statement. Whenever you have an instance of the User model, you can call user->profile or user->profile ()->chainOtherMethodsHere (). Laravel eloquent when able us to make our query cleaner and more readable without using an if-else statement in our Laravel eloquent query. If you would like to generate a database migration when you generate the model, you may use the -migration or -m option: php artisan make:model Flight -migration Using an Eloquent relationship Using this Eloquent One-To-One relationship is very simple. The easiest way to create a model instance is using the make:model Artisan command: php artisan make:model Flight 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. In this, tutorial we will discuss How to use Eloquent::when() in Laravel.Lararave Eloquent::when(): No More if-else for Conditional Queries. Example 1: Basic insert using Query Builder. For more information on configuring your database, check out the documentation. When learning the Laravel model creating or inserting records in your database is one of the important learning. 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 whenLoaded method may be used to conditionally load a relationship.The Eloquent ORM included with Laravel provides a beautiful, simple ActiveRecord implementation for working with your database. 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. 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. ![]()
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