Laravel 5.1 - Custom validation language file - php

Question

Is it possible to conditionally set a custom language file (e.g. resources/lang/en/validation_ajax.php) for a validation request? Just to be clear, I don't want to change the app language, just use another set of messages depending on the request origin.
When I make an ajax validation call I want to use different messages since I'm showing the error messages below the field itself. So there's no need to show the field name (label) again.
I know you can define labels on 'attributes' => [] but it's not worth the effort since I have so many fields in several languages.
I'm using a FormRequest (there's no manual call on the Controller just a type hint).

Answer 1

You can override the messages() method for a specific request (let's say login request). Let me show you: At first place, you need yo create a new custom Form Request, here we will define a custom message for email.required rule:
<?php namespace App\MyPackage\Requests;
use App\Http\Requests\Request;
class LoginRequest extends Request {
/**
* Determine if the user is authorized to make this request.
*
* #return bool
*/
public function authorize()
{
return true;
}
public function messages()
{
return [
'email.required' => 'how about the email?',
];
}
/**
* Get the validation rules that apply to the request.
*
* #return array
*/
public function rules()
{
return [
'email' => ['required', 'email'],
'password' => ['required', 'confirmed']
];
}
}
Only email.required rule message will be override. For password it will display the default message set at validation.php file.
Now, apply the form request at your controller function like a type hint:
class LoginController{
public function validateCredentials(LoginRequest $request){
// do tasks here if rules were success
}
}
And that is all. The messages() method is useful if you need are creating custom packages and you want to add/edit validation messages.
Update
If you need to carry the bag of messages on into your package's lang file then you can make the following changes:
At your package create your custom lang file:
MyPackage/resources/lang/en/validation.php
Add the messages keeping the same array's structure as project/resources/lang/en/validation.php file:
<?php
return [
'email' => [
'required' => 'how about the email?',
'email' => 'how about the email format?',
],
];
Finally, at your messages() method call the lang's line of your package respectively:
public function messages(){
return [
'email.required' => trans('myPackage::validation.email.required'),
'email.emial' => trans('myPackage::validation.email.valid'),
];
}