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class Api { | |
// 省略... | |
// コメントを取得. | |
static func getComments(postId: Int, callback: @escaping (String?, [Comment]?) -> Void) { | |
// APIトークンを取得. | |
guard let apiToken = UserDefaults.standard.string(forKey: "apiToken") else { | |
callback("ログインが必要です", nil) | |
return | |
} | |
// URL を作成. | |
let url = apiRoot + "/api/posts/\(postId)/comments?api_token=" + apiToken | |
// API呼び出し. | |
Alamofire.request(url).responseData { dataResponse in | |
// ネットワーク圏外など. | |
if dataResponse.result.isFailure { | |
print(dataResponse.error ?? "") | |
callback("エラーが発生しました。", nil) | |
return | |
} | |
// ステータスコードが 200 でない場合、エラー. | |
if dataResponse.response?.statusCode != 200 { | |
print(dataResponse.result.value ?? "") | |
callback("サーバーでエラーが発生しました", nil) | |
return | |
} | |
// 成功した場合、サーバーからのレスポンスを受け取る. | |
guard let data = dataResponse.result.value else { | |
return | |
} | |
// Commentの配列に変換して、返却する. | |
do { | |
let comments = try JSONDecoder().decode([Comment].self, from: data) | |
callback(nil, comments) | |
} catch { | |
// 変換でエラーが発生した時. | |
print(error.localizedDescription) | |
callback("エラーが発生しました", nil) | |
} | |
} | |
} | |
} |
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// Comment.swift | |
// コメントを表現するクラス. | |
class Comment: Codable { | |
let id: Int | |
let post_id: Int | |
let user_id: Int | |
let comment: String | |
} |
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