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Laravel: Validation unique on update

Posted by: admin October 29, 2017 Leave a comment

Questions:

I know this question has been asked many times before but no one explains how to get the id when you’re validating in the model.

'email' => 'unique:users,email_address,10'

My validation rule is in the model so how do I pass the ID of the record to the validation rule.

Here is my models/User

protected $rules_update = [
    'email_address' => 'required|email|unique:users,email_address,'.$id,
    'first_name' => "required",
    'last_name' => "required",
    'password' => "required|min:6|same:password_confirm",
    'password_confirm' => "required:min:6|same:password",
    'password_current' => "required:min:6"
];

models/BaseModel

    protected $rules = array();

public $errors;

/*
    * @data: array, Data to be validated
    * @rules: string, rule name in model 
*/

public function validate($data, $rules = "rules") {

    $validation  = Validator::make($data, $this->$rules);

    if($validation->passes()) {
        return true;
    }

    $this->errors = $validation->messages();

    return false;
}
Answers:

One simple solution.

In your Model

protected $rules = [
    'email_address' => 'sometimes|required|email|unique:users',
    ..
];

In your Controller, action:update

...
$rules = User::$rules;
$rules['email_address'] = $rules['email_address'] . ',id,' . $id;
$validationCertificate  = Validator::make($input, $rules); 

Questions:
Answers:

There is an elegant way to do this. If you are using Resource Controllers, your link to edit your record will look like this:

/users/{user}/edit OR /users/1/edit

And in your UserRequest, the rule should be like this :

public function rules()
{
    return [
        'name' => [
            'required',
            'unique:users,name,' . $this->user
        ],
    ];
}

Or if your link to edit your record look like this:

/users/edit/1

You can try this also:

public function rules()
{
    return [
        'name' => [
            'required',
            'unique:users,name,' . $this->id
        ],
    ];
}

Questions:
Answers:

If i understand what you want:

’email’ => ‘required|email|unique:users,email_address,’. $id .”

In model update method, for exemple, should receive the $id with parameter.

Sorry my bad english.

Questions:
Answers:
public function rules()
{

    switch($this->method())
    {
        case 'GET':
        case 'DELETE':
        {
            return [];
        }
        case 'POST':
        {
            return [
                'name' => 'required|unique:permissions|max:255',
                'display_name' => 'required',
            ];
        }
        case 'PUT':
        case 'PATCH':
        {
            return [                    
                'name' => 'unique:permissions,name,'.$this->get('id').'|max:255',
                'display_name' => 'required',
            ];
        }
        default:break;
    }    
}

Questions:
Answers:
$rules = [
    "email" => "email|unique:users, email, {{$id}}, user_id"
];

In Illuminate\Validation\Rules\Unique;

Unique validation will parse string validation to Rule object

Unique validation has pattern: unique:%s,%s,%s,%s,%s’

Corresponding with: table name, column, ignore, id column, format wheres

/**
 * Convert the rule to a validation string.
 *
 * @return string
 */
public function __toString()
{
    return rtrim(sprintf('unique:%s,%s,%s,%s,%s',
        $this->table,
        $this->column,
        $this->ignore ?: 'NULL',
        $this->idColumn,
        $this->formatWheres()
    ), ',');
}

Questions:
Answers:

This is what I ended up doing. I’m sure there is a more efficient way of doing this but this is what i came up with.

Model/User.php

protected $rules = [
    'email_address' => 'sometimes|required|email|unique:users,email_address, {{$id}}',
];

Model/BaseModel.php

public function validate($data, $id = null) {


      $rules = $this->$rules_string;

     //let's loop through and explode the validation rules
     foreach($rules as $keys => $value) {

        $validations = explode('|', $value);

        foreach($validations as $key=>$value) {

            // Seearch for {{$id}} and replace it with $id
            $validations[$key] = str_replace('{{$id}}', $id, $value);

        }
        //Let's create the pipe seperator 
        $implode = implode("|", $validations);
        $rules[$keys] = $implode;

     }
     ....

  }

I pass the $user_id to the validation in the controller

Controller/UserController.php

public function update($id) { 

   .....

    $user = User::find($user_id);

    if($user->validate($formRequest, $user_id)) {
      //validation succcess 
    } 

    ....


}

Questions:
Answers:

My solution:

$rules = $user->isDirty('email') ? \User::$rules : array_except(\User::$rules, 'email');

Then in validation:

$validator = \Validator::make(\Input::all(), $rules, \User::$messages);

The logic is if the email address in the form is different, we need to validated it, if the email hasn’t changed, we don’t need to validate, so remove that rule from validation.

Questions:
Answers:

$validator = Validator::make(
array(
‘E-mail’=>$request[’email’],
),
array(
‘E-mail’ => ‘required|email|unique:users,email,’.$request[‘id’],
));

Questions:
Answers:

’email’ => ‘required|email|unique:users,email_address,’. $id .’ID’

Where ID is the primary id of the table

Questions:
Answers:

Found the easiest way, working fine while I am using Laravel 5.2

public function rules()

{

switch ($this->method()) {
    case 'PUT':
        $rules = [
            'name'                  => 'required|min:3',
            'gender'                => 'required',
            'email'                 => 'required|email|unique:users,id,:id',
            'password'              => 'required|min:5',
            'password_confirmation' => 'required|min:5|same:password',
        ];
        break;

    default:
        $rules = [
            'name'                  => 'required|min:3',
            'gender'                => 'required',
            'email'                 => 'required|email|unique:users',
            'password'              => 'required|min:5',
            'password_confirmation' => 'required|min:5|same:password',
        ];
        break;
}

return $rules;
}

Questions:
Answers:

While updating any Existing Data Write validator as following:

'email' => ['required','email', Rule::unique('users')->ignore($user->id)]

This will skip/ignore existing user’s id’s unique value matching for the specific column.

Questions:
Answers:

an even simpler solution tested with version 5.2

in your model

// validator rules
public static $rules = array(
    ...
    'email_address' => 'email|required|unique:users,id'
);