Laravel——語言包

若是其餘語言沒有定義，會默認的查找en下的定義

建立語言包

resources/lang下建立須要的語言文件夾，如jp，默認是en。而後建立語言包文件

trans.php

return [
   //User
   'user_name_required' => 'User name cannot be empty',
   'user_name_between' => 'User name length 5-10 characters',
   'user_name_unique' => 'User names must be unique',
   'user_password_required' => 'Password cannot be empty',
   'user_password_between' => 'Password length 5-10 characters',
   'user_role_required' => 'Role cannot be empty',

   //Role
   'role_name_required' => 'Role name cannot be empty',
   'role_name_unique' => 'Role names must be unique',

   // DbException
   2000 => 'Database operation exception',
   2001 => 'Database insert failure',
   2002 => 'Database update failure',
   2003 => 'Database delete failure',
];
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建立中間件

經過前端頭的X-Language，來判斷是什麼語言，並設置語言

SwitchLanguage.php

class SwitchLanguage
{
   public function handle($request, Closure $next)
   {
       $lang = $_SERVER['HTTP_X_LANGUAGE'] ?? 'jp';
       app()->setLocale($lang);
       return $next($request);
   }
}
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註冊路由中間件

Kernel.php

'lang' => \App\Http\Middleware\SwitchLanguage::class,
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路由使用中間件

Route::middleware( 'lang')->group(function () {

});
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使用語言包

自定義異常

自定義異常能夠經過異常碼進行判斷

BaseException.php

public function __construct($code = 0, $message = '', $httpCode = 0, Throwable $previous = null)
{
   $this->default_code = $code == 0 ? $this->default_code : $code;
   $this->default_message = empty($message) ? trans("trans.$this->default_code") : $message;
   $this->default_httpCode = $httpCode == 0 ? $this->default_httpCode : $httpCode;

   parent::__construct($message, $code, $previous);
}
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表單驗證異常

Handler.php

if ($exception instanceof ValidationException) {
   $message = $exception->validator->errors()->first();
   return response()->json([
       'code' => 1000,
       'message' => trans("trans.$message"),
   ], 422);
}
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UserRequest.php

public function messages()
{
   return [
       'name.required' => 'user_name_required',
       'name.between' => 'user_name_between',
       'name.unique' => 'user_name_unique',
       'password.required' => 'user_password_required',
       'password.between' => 'user_password_between',
       'role.required' => 'user_role_required',
   ];
}
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