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Laravel Eloquent 模型根据字段值为空或存在的条件更新

Laravel Eloquent model update according to condition of field value null or existing(Laravel Eloquent 模型根据字段值为空或存在的条件更新)

本文介绍了Laravel Eloquent 模型根据字段值为空或存在的条件更新的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在尝试像这样更新 Laravel Eloquent 模型.

I am trying to update Laravel Eloquent model like this.

Res_Reservations::where('time_id', $time['id'])
                ->where('date',  $bus['date'])
                ->where('valid',  config('config.TYPE_SCHEDULE_UNREMOVED'))
                ->where(function($query) use($time, $notesAdd) {
                    $query->whereNull('reason', function($query) use ($time, $notesAdd) {
                        return $query->update([
                            'time_id' => $time['move'],
                            'reason' => $notesAdd
                        ]);
                    })
                    ->orWhere('reason', '=', '', function($query) use ($time, $notesAdd) {
                        return $query->update([
                            'time_id' => $time['move'],
                            'reason' => $notesAdd
                        ]);
                    })
                    ->orWhere('reason', '<>', '', function($query) use ($time, $notesAdd) {
                        return $query->update([
                            'time_id' => $time['move'],
                            'reason' => DB::raw("CONCAT(reason, 
'" . $notesAdd . "')")
                        ]);
                    });
                });

但它不起作用.

也就是说,我想更新如下.

In other words, I want to update as below.

  • 如果 'reason' 为 null 或空字符串

  • if 'reason' is null or emptystring

Res_Reservations::where('time_id', $time['id'])
                ->where('date',  $bus['date'])
                ->where('valid',  config('config.TYPE_SCHEDULE_UNREMOVED'))
                ->update([
                    'time_id' => $time['move'],
                    'reason' => $notesAdd
                ]);

  • 否则

  • else

    Res_Reservations::where('time_id', $time['id'])
                    ->where('date',  $bus['date'])
                    ->where('valid',  config('config.TYPE_SCHEDULE_UNREMOVED'))
                    ->update([
                        'time_id' => $time['move'],
                        'reason' => DB::raw("CONCAT(reason, '
    " . $notesAdd . "')")
                    ]);
    

    我的错误是什么?我怎样才能使陈述更简单?请告诉我~

    What is my mistake? And how can I make statements simpler? Please let me know~

    推荐答案

    where函数回调中使用update函数错误

    It is wrong to use update function inside the callback of where function

    您必须在 2 个查询中执行此操作,例如:

    You have to do it in 2 queries like:

    Res_Reservations::where('time_id', $time['id'])
        ->where('date', $bus['date'])
        ->where('valid', config('config.TYPE_SCHEDULE_UNREMOVED'))
        ->where(function ($query
        {
            $query->where('reason', null)
                ->orWhere('reason', '');
        })
        ->update([
            'time_id' => $time['move'],
            'reason'  => $notesAdd,
        ]);
    
    
    Res_Reservations::where('time_id', $time['id'])
        ->where('date', $bus['date'])
        ->where('valid', config('config.TYPE_SCHEDULE_UNREMOVED'))
        ->where('reason', '!=',  null)
        ->where('reason', '!=' '');
        ->update([
            'time_id' => $time['move'],
            'reason'  => DB::raw('CONCAT(reason, "
    ' . $notesAdd . '")'),
        ]);
    

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