laravel validation exists in table code example

Example 1: laravel exists validation

'state_id' => 'exists:states,id'

Example 2: laravel validation

/**
 * Store a new blog post.
 *
 * @param  Request  $request
 * @return Response
 */
public function store(Request $request)
{
    $validatedData = $request->validate([
        'title' => 'required|unique:posts|max:255',
        'body' => 'required',
    ]);

    // The blog post is valid...
}

Example 3: validate field for existing client laravel

unique:users,username,id,1 // table, field, idcolumn, value to ignore

Example 4: validation rule if row exist laravel

//update request 
return [
	'username' => 'unique:users,username,' . $this->route('internalUser')->id . ',id',
];

//create request
return [
	'username' => 'unique:users'
];