Question

我有一个API来更新艺术家的应用程序和一个尝试与API交互以更新艺术家的客户端。问题是每当我尝试执行PUT请求时，记录都不会更新，请求会因Completed 204 No Content in 14ms (ActiveRecord: 0.0ms)错误而失败。

这是API控制器：

class Api::V1::ArtistsController < Api::V1::BaseController
  respond_to :json

  def show
    respond_with Artist.find_by_id(params[:id])
  end

  def update
    artist = Artist.find_by_id(params[:id])
    respond_with artist.update_attributes(params[:artist])
  end
end

从客户端模型进行API调用的方法：

def update_artist_attributes
  self.class.put("/api/artists/#{self.artist_id}.json", { body: {
    artist: {
      bio: self.artist_attributes_copy[:bio],
      phone_number: self.artist_attributes_copy[:phone_number],
      country: self.artist_attributes_copy[:country],
      city: self.artist_attributes_copy[:city]
    }
  } })
end

服务器日志（API端）：

Started PUT "/api/artists/1.json" for 127.0.0.1 at 2013-02-02 19:00:00 +0100
Processing by Api::V1::ArtistsController#update as JSON
  Parameters: {"artist"=>{"bio"=>"NERVO sisters are not lesbians and they're hot! And they're single too!", "phone_number"=>"218391", "country"=>"Afghanistan", "city"=>"dnajksakd"}, "id"=>"1"}
  Artist Load (0.4ms)  SELECT "artists".* FROM "artists" WHERE "artists"."id" = 1 LIMIT 1
   (0.2ms)  BEGIN
  Artist Exists (0.4ms)  SELECT 1 AS one FROM "artists" WHERE "artists"."access_token" = 'EqHG8SGh9ldl3W-U5PBECw' LIMIT 1
  Artist Exists (0.6ms)  SELECT 1 AS one FROM "artists" WHERE (LOWER("artists"."access_token") = LOWER('EqHG8SGh9ldl3W-U5PBECw') AND "artists"."id" != 1) LIMIT 1
  Artist Exists (0.5ms)  SELECT 1 AS one FROM "artists" WHERE ("artists"."email" IS NULL AND "artists"."id" != 1) LIMIT 1
   (0.3ms)  ROLLBACK
Completed 204 No Content in 14ms (ActiveRecord: 0.0ms)

我做错了什么？

Answer 1

发生204问题是因为update_attributes未返回模型实例。您希望更新方法为：

artist = Artist.find_by_id(params[:id])
artist.update_attributes(params[:artist])
respond_with artist

Answer 2

update_attributes会返回true或false，具体取决于操作是否成功。

您将此结果传递给respond_with，因此我认为这就是您获得204代码（“无内容”）的原因 - 无论update_attributes的结果如何，请求都被视为成功，但返回否内容。

Answer 3

提交的两个答案是有效的，但问题的核心是我有验证错误，因此模型对象没有得到更新......

Rails 3：API PUT请求失败，记录未更新

3 个答案: