Laravel is a popular PHP framework that provides many powerful features and easy-to-use tools to help developers develop efficient, scalable and easy-to-maintain web applications. Laravel's soft delete feature is a very useful feature that allows developers to easily delete data in the database without destroying the integrity of the database. But sometimes, developers may need to change the Laravel soft delete field to a different name to suit their specific needs. This article will introduce how to change Laravel soft delete field to another name.

Laravel Soft Deletion

In Laravel, soft deletion is achieved by marking data as "deleted" rather than actually deleting the data from the database. The soft delete function does not destroy the integrity of the database because the soft deleted data still exists in the database, but has been marked as "deleted" and will not appear in the query results. Laravel soft deletion mainly includes two steps:

1. Add SoftDeletes feature to the model

To use Laravel's soft deletion function, you need to add SoftDeletes to the model to be soft deleted. feature. Laravel's models use traits to add additional functionality. The SoftDeletes trait is a trait provided by Laravel.

use IlluminateDatabaseEloquentModels;
use IlluminateDatabaseEloquentSoftDeletes;

class Example extends Model{
    use SoftDeletes;

    protected $dates = ['deleted_at'];

    //...
}

In the above code, the use SoftDeletes statement indicates that we want to use the SoftDeletes feature provided by Laravel. At the same time, you also need to use the $dates attribute to define the name of the soft deletion timestamp field used to identify the deletion time. The default soft delete timestamp field is "deleted_at", but you can use other names.

2. Tell the model to perform soft deletion

Laravel's SoftDeletes feature provides a delete method that will not actually delete the data when performing delete, but will The data is marked "deleted". For example:

$example = Example::find(1);
$example->delete();

The above code will mark the data with ID 1 as "deleted", but will not delete it from the database.

To query soft deleted data, you can use the withTrashed method to retrieve all data including soft deleted data, or the onlyTrashed method to retrieve only deleted data. For example:

// 查詢包括軟刪除數(shù)據(jù)在內(nèi)的所有數(shù)據(jù)
$examples = Example::withTrashed()->get();

// 查詢刪除的數(shù)據(jù)
$deletedExamples = Example::onlyTrashed()->get();

The above codes can be used to query soft deleted data and deleted data respectively.

Change the Laravel soft deleted field to another name

By default, Laravel uses the "deleted_at" field to identify the deletion timestamp field, which makes it very convenient when querying soft deleted data.

However, in some cases, developers may need to use additional properties to indicate removal of the timestamp field. If you need to change the name of a soft deleted field in Laravel, you can define the deletedAt method in your model. For example:

use IlluminateDatabaseEloquentModel;
use IlluminateDatabaseEloquentSoftDeletes;

class Example extends Model{
    use SoftDeletes;

    protected $dates = ['my_deleted_at'];

    public function getDeletedAtColumn()
    {
        return 'my_deleted_at';
    }

    // ...
}

In the above code, we change "deleted_at" in the $dates attribute to "my_deleted_at" and use the getDeletedAtColumn method to change the Laravel soft deleted field to "my_deleted_at".

Soft deletion can then be performed using:

$example = Example::find(1);
$example->delete();

Laravel will use the my_deleted_at field instead of the default deleted_at field to mark the data as deleted. At query time, you can use the withTrashed and onlyTrashed methods to retrieve deleted data.

Summary

In Laravel, using soft delete makes it easy to mark data as "deleted" without actually deleting the data. Laravel's SoftDeletes feature provides an easy way to perform soft deletions. By default, Laravel uses the "deleted_at" field to identify deletion timestamp fields, however, developers can change the field to a different name using the getDeletedAtColumn method. Regardless of the solution, soft deletion is a very powerful and practical feature in Laravel.

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