Laravel validation: exists two column same row - php

Question

Is there a way of referencing another field when specifying the exists validation rule in Laravel?
My request :
public function rules()
{
return [
'numero_de_somme' => 'unique:personnels,numero_de_somme|exists:fonctionnaire,num_somme',
'cin' => 'unique:personnels,cin|exists:fonctionnaire,cin',
];
}
in my validation rules I want to be able to make sure that:
num_somme exists within the fonctionnaire table
cin exists within the fonctionnaire table and cin input must be
on the same row of the num_somme
num_somme : 12345 cin : s89745
num_somme : 78945 cin : U10125
Explaining : for example
1st scenario if the input num_somme = 12345 and cin = U10125 the validation must fail
2nd scenario if the input num_somme = 12345 and cin = s89745 the validation must success
I hope this makes sense.
Thank you

Answer 1

You can simply use this:
'request_input' => exists:table,col,alternative_col_1,alternative_val_1,alternative_col_2,alternative_val_2, ...'
The SQL query is like below:
select count(*) as aggregate from `table` where `id` = [request_input] and `alternative_col1` = "alternative_val1" and `alternative_col2` = "alternative_val2"

Answer 2

I came across the same need today and I think I have a solution using the validation Rule class: Rule example.
Here is my scenario: I have an email verifications table and I want to ensure that a passed machine code and activation code exist on the same row.
Be sure to include use Illuminate\Validation\Rule;
$activationCode = $request->activation_code;
$rules = [
'mc' => [
'required',
Rule::exists('email_verifications', 'machineCode')
->where(function ($query) use ($activationCode) {
$query->where('activationCode', $activationCode);
}),
],
'activation_code' => 'required|integer|min:5',
'operating_system' => 'required|alpha_num|max:45'
];
The first argument in the exists method is the table and the second is the custom column name I'm using for the 'mc' field. I pass the second column I want to check using the 'use' keyword and then use that field in a a where clause.

Answer 3

You can achieve validating multipe columns by using Rule.
Include :
use Illuminate\Validation\Rule;
use Validator;
$AdminId = $request->AdminId;
$Validate = Validator::make($request->all(),[
'TaxId' => [ 'required', Rule::exists('tax','id')
->where(function ($query) use ($AdminId) {
$query->where('u_id', $AdminId);
})],
]);
if($Validate->fails())
{`Your ERROR HERE`}
else
{`SUCCESS`}
Here in my example I'm checking u_id and Id which is in same row and 2 columns.
Explaining : for example
My DB HAS 2 ROWS IN tax TABLE
id = 1 , u_id = 1, tax = "GST" , value -> 8
id = 2 , u_id = 2, tax = "GST" , value -> 5
1st scenario if the input id = 2 and u_id = 1 the validation must fail because this row belongs to u_id = 2.
2nd scenario if the input id = 2 and u_id = 2 the validation must success

Answer 4

i managed to solve it using the most simple method
for numero_de_somme
'numero_de_somme' => 'unique:personnels,numero_de_somme|exists:fonctionnaire,num_somme,cin,'.Request::get('cin'),
for cin
'cin' => 'unique:personnels,cin|exists:fonctionnaire,cin',
PS . don't forget to call use Illuminate\Http\Request;

Answer 5

if (is_numeric($request->get('emailOrphone'))){
$request->validate([
'emailOrphone'=>'exists:users,phone',
],
[
'emailOrphone.exists'=>'phone is invalid.'
]);
}else{
$request->validate([
'emailOrphone'=>'exists:users,email',
],
[
'emailOrphone.exists'=>'email is invalid.''
]);
}