模型怎么实现自定义 软删除的 字段和值

需要重写

<?php

namespace App\Models\SoftDelete;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Scope;

class DeleteScope implements Scope
{
    /**
     * All of the extensions to be added to the builder.
     *
     * @var string[]
     */
    protected $extensions = ['Restore', 'WithTrashed', 'WithoutTrashed', 'OnlyTrashed'];

    /**
     * 把约束加到 Eloquent 查询构造中
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @param  \Illuminate\Database\Eloquent\Model  $model
     * @return void
     */
    public function apply(Builder $builder, Model $model)
    {
        if ($model->getIsDelete() == 0) $builder->where($model->getQualifiedDeletedAtColumn(), $model->getIsDelete());
    }

    /**
     * Extend the query builder with the needed functions.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @return void
     */
    public function extend(Builder $builder)
    {
        // 假删除时，才需要调用扩展方法与更新字段状态
        if ($builder->getModel()->getIsDelete() == 0){
            foreach ($this->extensions as $extension) {
                $this->{"add{$extension}"}($builder);
            }

            $builder->onDelete(function (Builder $builder) {
                $column = $this->getDeletedAtColumn($builder);

                return $builder->update([
                    $column => 1,
                ]);
            });
        }
    }

    /**
     * Get the "deleted at" column for the builder.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @return string
     */
    protected function getDeletedAtColumn(Builder $builder)
    {
        if (count((array) $builder->getQuery()->joins) > 0) {
            return $builder->getModel()->getQualifiedDeletedAtColumn();
        }

        return $builder->getModel()->getDeletedAtColumn();
    }

    /**
     * Add the restore extension to the builder.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @return void
     */
    protected function addRestore(Builder $builder)
    {
        $builder->macro('restore', function (Builder $builder) {
            $builder->withTrashed();

            return $builder->update([$builder->getModel()->getDeletedAtColumn() => 0]);
        });
    }

    /**
     * Add the with-trashed extension to the builder.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @return void
     */
    protected function addWithTrashed(Builder $builder)
    {
        $builder->macro('withTrashed', function (Builder $builder, $withTrashed = true) {
            if (! $withTrashed) {
                return $builder->withoutTrashed();
            }

            return $builder->withoutGlobalScope($this);
        });
    }

    /**
     * Add the without-trashed extension to the builder.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @return void
     */
    protected function addWithoutTrashed(Builder $builder)
    {
        $builder->macro('withoutTrashed', function (Builder $builder) {
            $model = $builder->getModel();

            $builder->withoutGlobalScope($this)->where($model->getQualifiedDeletedAtColumn(), 0);

            return $builder;
        });
    }

    /**
     * Add the only-trashed extension to the builder.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $builder
     * @return void
     */
    protected function addOnlyTrashed(Builder $builder)
    {
        $builder->macro('onlyTrashed', function (Builder $builder) {
            $model = $builder->getModel();

            $builder->withoutGlobalScope($this)->where($model->getQualifiedDeletedAtColumn(), 0);

            return $builder;
        });
    }
}

<?php

declare(strict_types = 1);

namespace App\Models\SoftDelete;

trait SoftDelete
{
    /**
     * Indicates if the model is currently force deleting.
     *
     * @var bool
     */
    protected $is_delete = 1; //是否开启删除（1.开启删除，就是直接删除；）
    protected $delete_field = 'is_delete';

    public function getIsDelete()
    {
        return $this->is_delete ?? 1;
    }

    public function getDeleteField()
    {
        return $this->getDeletedAtColumn();
    }

    /**
     * Boot the soft deleting trait for a model.
     *
     * @return void
     */
    public static function bootSoftDelete()
    {
        static::addGlobalScope(new DeleteScope());
    }

    /**
     * Force a hard delete on a soft deleted model.
     *
     * @return bool|null
     */
    public function forceDelete()
    {
        $this->is_delete = 1;

        return tap($this->delete(), function ($deleted) {
            $this->is_delete = 0;

            if ($deleted) {
                $this->fireModelEvent('forceDeleted', false);
            }
        });
    }

    /**
     * Perform the actual delete query on this model instance.
     *
     * @return mixed
     */
    protected function performDeleteOnModel()
    {
        if ($this->is_delete) {
            $this->exists = false;

            return $this->setKeysForSaveQuery($this->newModelQuery())->forceDelete();
        }

        return $this->runSoftDelete();
    }

    /**
     * Perform the actual delete query on this model instance.
     *
     * @return void
     */
    protected function runSoftDelete()
    {
        $query = $this->setKeysForSaveQuery($this->newModelQuery());

        $time = $this->freshTimestamp();

        $columns = [$this->getDeletedAtColumn() => 1];

        $this->{$this->getDeletedAtColumn()} = $time;

        if ($this->timestamps && $this->getUpdatedAtColumn() == 0) {
            $this->{$this->getUpdatedAtColumn()} = $time;

            $columns[$this->getUpdatedAtColumn()] = $this->fromDateTime($time);
        }

        $query->update($columns);

        $this->syncOriginalAttributes(array_keys($columns));

        $this->fireModelEvent('trashed', false);
    }

    /**
     * Restore a soft-deleted model instance.
     *
     * @return bool|null
     */
    public function restore()
    {
        // If the restoring event does not return false, we will proceed with this
        // restore operation. Otherwise, we bail out so the developer will stop
        // the restore totally. We will clear the deleted timestamp and save.
        if ($this->fireModelEvent('restoring') === false) {
            return false;
        }

        $this->{$this->getDeletedAtColumn()} = 0;

        // Once we have saved the model, we will fire the "restored" event so this
        // developer will do anything they need to after a restore operation is
        // totally finished. Then we will return the result of the save call.
        $this->exists = true;

        $result = $this->save();

        $this->fireModelEvent('restored', false);

        return $result;
    }

    /**
     * Determine if the model instance has been soft-deleted.
     *
     * @return bool
     */
    public function trashed()
    {
        return $this->{$this->getDeletedAtColumn()} != 1;
    }

    /**
     * Register a "softDeleted" model event callback with the dispatcher.
     *
     * @param  \Closure|string  $callback
     * @return void
     */
    public static function softDeleted($callback)
    {
        static::registerModelEvent('trashed', $callback);
    }

    /**
     * Register a "restoring" model event callback with the dispatcher.
     *
     * @param  \Closure|string  $callback
     * @return void
     */
    public static function restoring($callback)
    {
        static::registerModelEvent('restoring', $callback);
    }

    /**
     * Register a "restored" model event callback with the dispatcher.
     *
     * @param  \Closure|string  $callback
     * @return void
     */
    public static function restored($callback)
    {
        static::registerModelEvent('restored', $callback);
    }

    /**
     * Register a "forceDeleted" model event callback with the dispatcher.
     *
     * @param  \Closure|string  $callback
     * @return void
     */
    public static function forceDeleted($callback)
    {
        static::registerModelEvent('forceDeleted', $callback);
    }

    /**
     * Get the name of the "deleted at" column.
     *
     * @return string
     */
    public function getDeletedAtColumn()
    {
        return defined('static::DELETED_FIELD') ? static::DELETED_FIELD : $this->delete_field;
    }

    /**
     * Get the fully qualified "deleted at" column.
     *
     * @return string
     */
    public function getQualifiedDeletedAtColumn()
    {
        return $this->qualifyColumn($this->getDeletedAtColumn());
    }
}

模型引入

use SoftDelete;

需要软删除的：protected $is_delete = 0；
不定义的则删记录或者改`SoftDelete`的默认值

重写 SoftDeletingScope

然后 在模型里面
`
public static function bootSoftDeletes()
{
static::addGlobalScope(new SoftDeletingScope());
}

`
然后再 模型里面定义软删字段

const DELETED_AT =