Laravel Validation: Distinct Multiple Fields

[susutw]

I am trying to valid the array, like the example:

    'product' => [
        [
            'type' => 'ticket',
            'name' => 'train',
            'price' => 100,
        ],
        [
            'type' => 'ticket',
            'name' => 'train',
            'price' => 200,
        ],
        [
            'type' => 'toy',
            'name' => 'train',
            'price' => 100,
        ]
    ]

I hope it can have a rule "Distinct Multiple Fields", and I can use the rule like 'product.*' => 'distinct_multiple_fields:type,name'.
Giving the specified fields, and you can valid the value in fields.
So if "type + name" value is duplicate (like the example "type:ticket, name:train"), the validation result will be fail.
But the example "type:ticket, name:train" and "type:toy, name:train" will pass the validation.

If someone who think it works, and I will try to implement the code, thanks. 🙏
And if you have any naming suggestion, please tell me!

[jjjrmy]

I like this idea!

[henzeb]

There is already 'distinct'. Which could be adapted. I hate long underscored names.

[jjjrmy]

or something like Rule::distinct(['type', 'name'])

[susutw]

Thanks for your reactions!
I will design using distinct :)

[jjjrmy]

$this->collect('products')
   ->map(fn (array $product) => Arr::only($product, ['type', 'name']))  
   ->duplicates()->isEmpty()

[in-kajal-baldha]

array:4 [
0 => array:2 [
"master_report_type" => "CALF"
"body_part" => "RIGHT"
]
1 => array:2 [
"master_report_type" => "CALF"
"body_part" => "RIGHT"
]
2 => array:2 [
"master_report_type" => "CALF"
"body_part" => "LEFT"
]
3 => array:2 [
"master_report_type" => "ELBOW"
"body_part" => "RIGHT"
]
]

We make custom validation rule " distinct_multiple_fields " for check duplicate value in array.

`<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;

class DistinctMultipleFields implements Rule
{
public $params;
/**
* Create a new rule instance.
*
* @return void
*/

public function __construct($params)
{
    $this->params = $params;
}

/**
 * Determine if the validation rule passes.
 *
 * @param  string  $attribute
 * @param  mixed  $value
 * @return bool
 */
public function passes($attribute, $value)
{

   $collection = collect($this->params);
   $duplicate_data = $collection->duplicates();
   if(count($duplicate_data) > 0) {
       return false;
   }
       return true;
}

/**
 * Get the validation error message.
 *
 * @return string
 */
public function message()
{
    return 'Duplicate value is not allow in body part and side.';
}

}
`

How to use:

$request->validate([ 'report.*.master_report_type'=>['required',new DistinctMultipleFields($this->report)], ]);