Validation issue in laravel update function - php

Question

I'm having a admin dashboard in my laravel application
From the dashboard Admin can edit the user profile contents.
Here is my current usercontroller (only the update function included)
public function update(Request $request, $id)
{
$this->validate($request, [
'name' => ['required', 'alpha','min:2', 'max:255'],
'last_name' => ['required', 'alpha','min:2', 'max:255'],
'email' => ['required','email', 'max:255', 'unique:users,email,'.$id],
'password' => ['same:confirm-password','regex:/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[#$!%*?&])[A-Za-z\d#$!%*?&]{12,}$/'],
'mobile'=>['required', 'regex:/^\+[0-9]?()[0-9](\s|\S)(\d[0-9]{9})$/','numeric','min:9'],
'username'=>['required', 'string', 'min:4', 'max:10', 'unique:users,username,'.$id],
'roles'=>['required'],
//'user_roles'=>['required'],
]);
$input = $request->all();
if(!empty($input['password'])){
$input['password'] = Hash::make($input['password']);
}else{
$input = array_except($input,array('password'));
}
$user = User::find($id);
$user->update($input);
DB::table('model_has_roles')->where('model_id',$id)->delete();
$user->assignRole($request->input('roles'));
if($input['roles']=='customer'){
return redirect()->route('customers.index')
->with('success','Customer has been updated successfully');
}
else{
return redirect()->route('users.index')
->with('success','User has been updated successfully');
}
}
Now my problem is,
When ever admin updates an user without changing the password fields, the password fields get validated and throw me a regex error related to the password...
How can I avoid that issue and validate password field only if they are being changed.

Answer 1

With your current validation rules password field will always be checked with the regex. Adding nullable rule in first position of your password validation rules could help you solving the issue.