How to delete data or get the ID of data in laravel

Laravel is a very popular PHP framework that provides developers with many convenient functions and technologies that can help developers develop web applications more efficiently. In the process of developing using Laravel, front-end and back-end interaction is a very necessary function. One of the most commonly used functions is to delete data or obtain the ID of the data.

In Laravel, deleting data or getting the ID of data is a very important and common operation. Let us introduce how to delete data or get the ID of data in Laravel.

1. Delete Data

The most common way to delete data in Laravel is to use the Eloquent model. Eloquent is an ORM (Object Relational Mapping) of Laravel that provides operations Convenience method for database, simple and easy to use.

First, before using Eloquent to perform a delete operation, we need to create an Eloquent model. Suppose we create an Eloquent model named "User", and then create a route for "deleteUser". We The user can be deleted through the following code in the UserController:

use App\User;

public function delete($id)
{
    $user = User::find($id);
    $user->delete();

    return redirect('/users');
}

In the above code, we first find the user to be deleted through the find method, then execute the delete method to delete the user, and finally delete the user in the list Returned to the client.

2. Get ID

Getting the ID of data in Laravel is also very simple. We only need to define a function to get the ID in the Eloquent model.

Suppose we create an Eloquent model named "Car", in which we can define a function to get the ID, as follows:

class Car extends Model
{
    /**
     * 获取汽车的 ID
     */
    public function getCarId()
    {
        return $this->id;
    }
}

In the above code, we define a getCarId() function, which directly returns the ID of the car. In other places in the application, we can get the ID of the model object through the following code:

use App\Car;

$car = Car::find(1);

$carId = $car->getCarId();

In the above code, we first find the car with ID 1 through the find method, and then use the getCarId() function Get the ID of the car. Note that we use $this->id in the getCarId() function. This syntax obtains the ID property of the Eloquent model object.

Summary

Using Laravel, it is very convenient to delete data or obtain the ID of the data. These operations can be implemented through the Eloquent model. Of course, in addition to the Eloquent model, there are many other features and technologies in Laravel that can greatly improve our development efficiency.

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