Question

在我的Rails应用程序中，我为使用的iOS应用程序制作了api。

我有user模型与profile：

的关联

class User < ActiveRecord::Base
  has_one :personal_profile
  accepts_nested_attributes_for :personal_profile
end

class PersonalProfile < Profile
  belongs_to :user
end

users_controller.rb看起来像这样：

class Api::V1::UsersController < Api::V1::ApiController
  before_filter :authenticate_api_user, only: [:show, :update]

  def create
    @user = User.new(user_params)
    if @user.save
      @user
    else
      render json: { errors: @user.errors.full_messages }, status: 422
    end
  end

  def show
    @user
  end

  def update
    if @user.update(user_params)
      @user
    else
      render json: { errors: @user.errors.full_messages }, status: 422
    end
  end

private

  def user_params
    params.require(:user).permit(:name, :email, :birthday, :gender, :password, :password_confirmation, personal_profile_attributes: [:website, :location, :description, :tagline, :tag_tokens, :image, :image_cache])
  end

  def authenticate_api_user
    authenticate_or_request_with_http_token do |token, options|     
      @user = User.find_by(auth_token: token)
    end
  end
end

当我做这样的看跌请求时：

curl -H 'Authorization: Token token=AUTH_TOKEN' -H 'Content-Type: application/json' -X PUT -d '{"user": {"name": "Frank", "personal_profile_attributes": { "tagline": "New tagline" }}}' http://localhost:3000/api/user

我收到了这个回复：

{"errors":["Personal profile title can't be blank."]}

就像服务器无法识别我的参数：

Started PUT "/api/user" for ::1 at 2016-01-19 10:16:33 +0100
Processing by Api::V1::UsersController#update as JSON
  Parameters: {"user"=>{"name"=>"Frank", "personal_profile_attributes"=>{"tagline"=>"New tagline"}}}
  User Load (1.0ms)  SELECT  "users".* FROM "users" WHERE "users"."auth_token" = $1 LIMIT 1  [["auth_token", AUTH_TOKEN]]
   (0.8ms)  BEGIN
  PersonalProfile Load (1.2ms)  SELECT  "profiles".* FROM "profiles" WHERE "profiles"."type" IN ('PersonalProfile') AND "profiles"."user_id" = $1  ORDER BY title asc LIMIT 1  [["user_id", 1]]
  SQL (1.3ms)  UPDATE "profiles" SET "user_id" = $1, "updated_at" = $2 WHERE "profiles"."id" = $3  [["user_id", nil], ["updated_at", "2016-01-19 09:16:33.629907"], ["id", 1]]
  User Exists (1.3ms)  SELECT  1 AS one FROM "users" WHERE (LOWER("users"."email") = LOWER('d@friis.me') AND "users"."id" != 1) LIMIT 1
   (0.8ms)  ROLLBACK
Completed 422 Unprocessable Entity in 19ms (Views: 0.3ms | ActiveRecord: 6.5ms)

我为网络应用设置了另一个控制器设置，这是非常标准的，并且工作得很好！

非常感谢任何帮助！

Answer 1

好的，问题是我没有为请求参数传递关联记录的ID。这意味着使用我试图更新的属性创建了一个新的关联记录。

设置ID解决了问题并按预期更新了记录。

{ 
  "user" => { 
    "personal_profile_attributes" => {
      "id" => 1,
      "tagline" => "New tagline"
    }
  }
}

执行json put请求会将未编辑的字段保存为空白

1 个答案: