Laravel unique validation on multiple columns

Question

I have 2 columns in table servers.

I have columns ip and hostname.

I have validation:

\'data.ip\' => [\'required         


        

Answer 1

Table

server

Field

• id primary key

• ip should be unique with hostname

• hostname should be unique with ip

Here I validate for Ip and the hostname should be unique.

use Illuminate\Validation\Rule;

$ip = '192.168.0.1';
$host = 'localhost';

While Create

Validator::make($data, [
    'ip' => [
        'required',
         Rule::unique('server')->where(function ($query) use($ip,$host) {
           return $query->where('ip', $ip)->where('hostname', $host);
         });
    ],
]);

While Update

Add ignore after RULE

Validator::make($data, [
    'ip' => [
        'required',
         Rule::unique('server')->where(function ($query) use($ip,$host) {
           return $query->where('ip', $ip)->where('hostname', $host);
         })->ignore($serverid);
    ],
]);

Answer 2

Try this rule:
'data.ip' => 'required|unique:servers,ip,'.$this>id.'|unique:servers,hostname,'.$this->id

Answer 3

public function store(Request $request)
    {
         $this->validate($request, [
            'first_name' => 'required|regex:/^[\pL\s\-]+$/u|max:255|unique:contacts,first_name, NULL,id,first_name,'.$request->input('last_name','id'),
            'last_name'=>'required|regex:/^[\pL\s\-]+$/u|max:255|unique:contacts,last_name',
            'email' => 'required|email|max:255|unique:contacts,email',
            'job_title'=>'required',
            'city'=>'required',
            'country'=>'required'],
            [
             'first_name.regex'=>'Use Alphabets Only',
             'email.unique'=>'Email is Already Taken.Use Another Email',
             'last_name.unique'=>'Contact Already Exist!. Try Again.',
            ]
        );

Answer 4

This works for me for both create and update.

[
     'column_1' => 'required|unique:TableName,column_1,' . $this->id . ',id,colum_2,' . $this->column_2
]

Note: tested in Laravel 6.

Answer 5

You can use Rule::unique to achieve your validation rule

$messages = [
    'data.ip.unique' => 'Given ip and hostname are not unique',
];

Validator::make($data, [
    'data.ip' => [
        'required',
        Rule::unique('servers')->where(function ($query) use($ip,$hostname) {
            return $query->where('ip', $ip)
            ->where('hostname', $hostname);
        }),
    ],
],
$messages
);

edit: Fixed message assignation

Answer 6

This is the demo code. It would help you much better. I tried covering both insert and update scenarios.

Inside app/Http/Providers/AppServiceProvider.php

Validator::extend('uniqueOfMultiple', function ($attribute, $value, $parameters, $validator)
    {
        $whereData = [
            [$attribute, $value]
        ];

        foreach ($parameters as $key => $parameter) {

            //At 0th index, we have table name
            if(!$key) continue;

            $arr = explode('-', $parameter);

            if($arr[0] == 'except') {
                $column = $arr[1];
                $data = $arr[2];

                $whereData[] = [$column, '<>', $data];
            } else {
                $column = $arr[0];
                $data = $arr[1];

                $whereData[] = [$column, $data];
            }
        }

        $count = DB::table($parameters[0])->where($whereData)->count();
        return $count === 0;
    });

Inside app/Http/Requests/Something/StoreSometing.php

/**
 * Get the validation rules that apply to the request.
 *
 * @return array
 */
public function rules()
{
    return [
        'name' => 'required|max:225|uniqueOfMultiple:menus,location_id-' . $this->get('location_id', 'NULL') . ',language_id-' . $this->get('language_id', 1),
        'location_id' => 'required|exists:menu_location,id',
        'order' => 'digits_between:0,10'
    ];
}

Inside app/Http/Requests/Something/UpdateSomething.php

/**
 * Get the validation rules that apply to the request.
 *
 * @return array
 */
public function rules()
{
    return [
        'name' => 'required|max:225|uniqueOfMultiple:menus,location_id-' . $this->get('location_id', 'NULL') . ',language_id-' . $this->get('language_id', 'NULL') . ',except-id-' . $this->route('id', 'NULL'),
        'location_id' => 'required|exists:menu_location,id',
        'order' => 'digits_between:0,10'
    ];
}

Inside resources/lang/en/validation.php

'unique_of_multiple' => 'The :attribute has already been taken under it\'s parent.',

Here in this code, the custom validation used is uniqueOfMultiple. The first argument passed is the table_name i.e menus and all other arguments are column_name and are comma-separated. The columns are used here, name (primary column), location_id, language_id and one except-for column for the update case, except-id. The value passed for all three is - separated.