自定义 class | 中的自定义响应代码苗条的框架 3

Question

嘿，我已经尝试瘦身好几天了，现在我可以像这样简单 API

$app->get('/articles/getcategories', function (Request $request, Response $response, array $args) {
(new Category) -> getCategories($response);
});

一个问题是当我想从我的 class 向我的端点发送自定义响应代码时，在这种情况下类别 class 它不起作用，我能够发送一个使用此方法的响应：

$response -> getBody() -> write(json_encode($this -> makeObject(704, 'Something went wrong!')));

但是当我查看文档时:

$newResponse = $response->withStatus(302);
$data = array('name' => 'Rob', 'age' => 40);
$newResponse = $oldResponse->withJson($data, 201);

或者像这样：

return $response->withStatus(xxx);

不行，这是我的习惯class

 public function getCategories($response){

    $dbconn = (new db())->connect();
        //start db connection
    try {
        $stmt = $dbconn->prepare("SELECT category_id, category_name, category_description, category_type FROM article_category");

        $categories = $stmt->fetchAll(PDO::FETCH_ASSOC);
        $response->getBody()->write(json_encode($categories));

    } catch (PDOException $e){
        $response -> getBody() -> write(json_encode($this -> makeObject(704, 'Something went wrong!')));
    }

}

我做错了什么？

Answer 1

您的 makeObject-方法不会设置响应代码，它可能只会将其添加到响应对象。

您还需要设置 http 状态代码，然后 return 响应

try {
    $stmt = $dbconn->prepare("SELECT category_id, category_name, category_description, category_type FROM article_category");

    $categories = $stmt->fetchAll(PDO::FETCH_ASSOC);
    $response->getBody()->write(json_encode($categories));
    return $response; // uses default 200 response code (not needed but encouraged because without the return it can lead to problems later
} catch (PDOException $e){
    $response -> getBody() -> write(json_encode($this -> makeObject(704, 'Something went wrong!')));
    return $response->withStatus(704);
}

您还需要调整您的路线，将新的响应对象传递给 Slim

$app->get('/articles/getcategories', function (Request $request, Response $response, array $args) {
    return (new Category)->getCategories($response);
});

注意：可以使用controller，那么只需要写一行，而不是上面的3行，

自定义 class | 中的自定义响应代码苗条的框架 3

Custom response code in custom class | Slim Framework 3

php

slim