Laravel unique validation on multiple columns - php

Question

I have 2 columns in table servers.
I have columns ip and hostname.
I have validation:
'data.ip' => ['required', 'unique:servers,ip,'.$this->id]
This working only for column ip. But how to do that it would work and for column hostname?
I want validate data.ip with columns ip and hostname.
Because can be duplicates in columns ip and hostname, when user write ip.

Answer 1

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 2

The following will work on the create
'data.ip' => ['required', 'unique:servers,ip,'.$this->id.',NULL,id,hostname,'.$request->input('hostname')]
and the following for the update
'data.ip' => ['required', 'unique:servers,ip,'.$this->id.','.$request->input('id').',id,hostname,'.$request->input('hostname')]
I'm presuming that id is your primary key in the table. Substitute it for your environment.
The (undocumented) format for the unique rule is:
table[,column[,ignore value[,ignore column[,where column,where value]...]]]
Multiple "where" conditions can be specified, but only equality can be checked. A closure (as in the accepted answer) is needed for any other comparisons.

Answer 3

Laravel 5.6 and above
Validation in the controller
The primary key (in my case) is a combination of two columns (name, guard_name)
I validate their uniqueness by using the Rule class both on create and on update method of my controller (PermissionsController)
PermissionsController.php
<?php
namespace App\Http\Controllers;
use App\Permission;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use App\Http\Controllers\Controller;
class PermissionsController extends Controller
{
/**
* Store a newly created resource in storage.
*/
public function store(Request $request)
{
request()->validate([
'name' => 'required|max:255',
'guard_name' => [
'required',
Rule::unique('permissions')->where(function ($query) use ($request) {
return $query
->whereName($request->name)
->whereGuardName($request->guard_name);
}),
],
],
[
'guard_name.unique' => __('messages.permission.error.unique', [
'name' => $request->name,
'guard_name' => $request->guard_name
]),
]);
Permission::create($request->all());
flash(__('messages.permission.flash.created'))->success();
return redirect()->route('permission.index');
}
/**
* Update the specified resource in storage.
*/
public function update(Request $request, Permission $permission)
{
request()->validate([
'name' => 'required|max:255',
'guard_name' => [
'required',
Rule::unique('permissions')->where(function ($query) use ($request, $permission) {
return $query
->whereName($request->name)
->whereGuardName($request->guard_name)
->whereNotIn('id', [$permission->id]);
}),
],
],
[
'guard_name.unique' => __('messages.permission.error.unique', [
'name' => $request->name,
'guard_name' => $request->guard_name
]),
]);
$permission->update($request->all());
flash(__('messages.permission.flash.updated'))->success();
return redirect()->route('permission.index');
}
}
Notice in the update method i added an additional query constraint [ whereNotIn('id', [$permission->id]) ] to ignore the current model.
resources/lang/en/messages.php
<?php
return [
'permission' => [
'error' => [
'unique' => 'The combination [":name", ":guard_name"] already exists',
],
'flash' => [
'updated' => '...',
'created' => '...',
],
]
]
The flash() method is from the laracasts/flash package.

Answer 4

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 5

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 6

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

Answer 7

With Form Requests:
In StoreServerRequest (for Create)
public function rules() {
'ip' => [
'required',
Rule::unique('server')->where(function ($query) {
$query->where('ip', $this->ip)
->where('hostname', $this->host);
})
],
}
public function messages() {
return [
'ip.unique' => 'Combination of IP & Hostname is not unique',
];
}
In UpdateServerRequest (for Update)
Just Add ignore at the end
public function rules() {
'ip' => [
'required',
Rule::unique('server')->where(function ($query) {
$query->where('ip', $this->ip)
->where('hostname', $this->host);
})->ignore($this->server->id)
],
}

Answer 8

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.

Answer 9

This works for me for both create and update.
in your ServerUpdateRequest or ServerCreateRequest class
public function rules()
{
return [
'column_1' => 'required|unique:TableName,column_1,' . $this->id . ',id,colum_2,' . $this->column_2 . ',colum_3,' . $this->column_3,
];
}
This command run background a aggregate Sql like this
select
count(*) as aggregate
from
`TableName`
where
`column_1` = <postedColumn1Value>
and `id` <> idValue
and `column_2` = <postedColumn2Value>
and `column_3` = <postedColumn3Value>
tested in Laravel 9. and it works
Note: if you want to see background sql for debugging (For example, to check if the request values are empty[$this->]) , especially you have to write wrong code, For example, you may enter a filed name incorrectly.

Answer 10

for me laravel 8 this works
$req->validate([
'house_no' => [
Rule::unique('house')
->where('house_no', $req->input('house_no'))
->where('ward_no', $req->input('ward_no'))
],
]);

Answer 11

The following code worked nicely for me at Laravel 8
Create:
'required|unique:TableName,column_1,' . $this->column_1 . ',id,colum_2,' . $this->column_2,
Example:
public function store(Request $request)
{
$union = auth()->user()->union_id;
$request->validate([
'holding_no' => 'required|integer|unique:holding_taxes,holding_no,' . $request->holding_no . ',id,union_id,' . $union,
]);
}
Update:
'required|unique:TableName,column_1,' . $this->id . ',id,colum_2,' . $this->column_2,
Example:
public function update(Request $request, $id)
{
$union = auth()->user()->union_id;
$request->validate([
'holding_no' => 'required|unique:holding_taxes,holding_no,' . $id . ',id,union_id,'.$union,
]);
}

Answer 12

Simple solution with call back query
Rule::unique('users')->where(fn ($query) => $query->where(['project_id'=> request()->project_id, 'code'=> request()->code ])),

Answer 13

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.',
]
);