Laravel如何检查验证唯一表的两个字段 [英] Laravel how to check validate unique table two field

问题描述

我有tableA，其中有2个字段

I have tableA that there are 2 field

1. song_id
2. playlist_id

我要检查laravel验证唯一功能 示例:我已插入数据

I want to check laravel validate unique func example: I have inserted data

id =>  1
song_id => 2
playlist_id => 34

然后我必须再次插入数据，我要检查是否 playlist_id => 34已插入song_id = 2显示消息已经插入"，但如果playlist_id => 34插入song_id = 3允许插入

then I have to insert data again I want to check that if playlist_id => 34 already inserted song_id = 2 show message "already insert" but if playlist_id => 34 insert song_id = 3 allow insert

感谢您的帮助！

推荐答案

这是需要应用的规则.经过样本数据测试，可以正常工作.

This is the rule that need to apply. Tested with sample data and it works as desired.

use Illuminate\Validation\Rule;

$playlist_id = request('playlist_id');

$rules = [
    'song_id' => Rule::unique('tableA')->where(function ($query) use ($playlist_id) {
        $query->where('playlist_id', $playlist_id);
    })
];

样品条件

DB data
song_id     playlist_id
2           34
3           34

Request data
song_id     playlist_id     validation
2           34              fail
3           34              fail
4           34              success
2           35              success
3           35              success

示例测试代码

$data = [
    'song_id' => 2,
    'playlist_id' => 34,
];

$playlist_id = $data['playlist_id'];

$validator = \Validator::make($data, [
    'song_id' => Rule::unique('tableA')->where(function ($query) use ($playlist_id) {
        $query->where('playlist_id', $playlist_id);
    })
]);

if ($validator->fails()) {
    // handle failed validation
}

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