我应该如何格式化JSON POST请求到我的rails应用程序? [英] How should I format a JSON POST request to my rails app?
问题描述
我的Rails应用程序具有一个完美运行的播放器类.可以从Rails控制面板创建，删除和更新播放器，而不会出现任何问题.
My Rails app has a player class that works perfectly. Players can be created, deleted, and updated from my rails control panel without any issues.
我希望远程对方能够通过使用JSON请求创建播放器来加入乐趣.遵循我的创建方法上方的自动生成的Rails注释的建议:# POST /players.json我已经开始向localhost:3000/players.json
I would like a remote counterpart to be able to join in the fun by creating players using a JSON request. Following the advice of the auto generated Rails comments above my create method : # POST /players.json I have started sending requests to localhost:3000/players.json
JSON
{
"player": {
"name": "test",
"room_id": 0,
"skin_id": 1,
"head_id": 2,
"torso_id": 3,
"legs_id": 4,
"x_position": 5,
"y_position": 6,
"direction": 7,
"action": "",
"gender": "f"
}
}
但是，我遇到了以下错误消息:
However, I am running into this error message:
ActionController::ParameterMissing in PlayersController#create
param not found: player
ActionController::ParameterMissing in PlayersController#create
param not found: player
所以我想我的问题是:我应该如何构造要发送的JSON?
So I guess my question is: How should I structure the JSON I am sending?
其他信息:
- Ruby版本:2.0
- 导轨版本:4.0
- 我尝试使用邮递员 发送请求
- Ruby Version: 2.0
- Rails Version: 4.0
- I have tried sending my requests using Postman
更新-播放器参数
这是我的控制器中的玩家params方法(根据要求):
Here is the player params method from my controller (as requested):
def player_params
params.require(:player).permit(:name, :room_id, :skin_id, :head_id, :torso_id, :legs_id, :x_position, :y_position, :direction, :action, :gender)
end
更新2-播放器控制器
class PlayersController < ApplicationController
before_action :set_player, only: [:show, :edit, :update, :destroy]
skip_before_filter :verify_authenticity_token, :if => Proc.new { |c| c.request.format == 'application/json' }
# GET /players
# GET /players.json
def index
@players = Player.all
end
# GET /players/1
# GET /players/1.json
def show
end
# GET /players/new
def new
@player = Player.new
end
# GET /players/1/edit
def edit
@rooms = Room.all.map { |room| [room.name, room.id] }
end
# POST /players
# POST /players.json
def create
@player = Player.new(player_params)
respond_to do |format|
if @player.save
format.html { redirect_to @player, notice: 'Player was successfully created.' }
format.json { render action: 'show', status: :created, location: @player }
else
format.html { render action: 'new' }
format.json { render json: @player.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /players/1
# PATCH/PUT /players/1.json
def update
respond_to do |format|
if @player.update(player_params)
format.html { redirect_to @player, notice: 'Player was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @player.errors, status: :unprocessable_entity }
end
end
end
# DELETE /players/1
# DELETE /players/1.json
def destroy
@player.destroy
respond_to do |format|
format.html { redirect_to players_url }
format.json { head :no_content }
end
end
def manage_furni
@player = Player.find(params[:id])
@furni = Furni.all
end
def add_furni
player = Player.find(params[:id])
player.furnis << Furni.find(params[:furni])
redirect_to manage_furni_path(player)
end
def remove_furni
player = Player.find(params[:id])
item = InventoryItem.find(params[:item])
player.inventory_items.delete(item)
redirect_to manage_furni_path(player)
end
private
# Use callbacks to share common setup or constraints between actions.
def set_player
@player = Player.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def player_params
params.require(:player).permit(:name, :room_id, :skin_id, :head_id, :torso_id, :legs_id, :x_position, :y_position, :direction, :action, :gender)
end
end
更新3:日志
(
"Processing by PlayersController#create as JSON",
"Completed 400 Bad Request in 31ms",
"ActionController::ParameterMissing (param not found: player):",
"app/controllers/players_controller.rb:103:in `player_params'",
"app/controllers/players_controller.rb:40:in `create'",
"Rendered /Users/drewwyatt/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.5ms)",
"Rendered /Users/drewwyatt/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_trace.erb (0.9ms)",
"Rendered /Users/drewwyatt/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.8ms)",
"Rendered /Users/drewwyatt/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (16.3ms)"
){
}
推荐答案
首先，我认为您的数据格式还可以，这不是问题所在.当我遇到相同的问题时，那是因为我没有随请求一起发送Content-Type: application/json标头.
First of all, I think your data format is ok and is not the problem here. When I ran exactly into the same problem it was because I did not send the Content-Type: application/json header along with my request.
在Postman中，您可以选择原始"数据格式，然后选择"JSON(application/json)"以包含此标头.就我而言，它看起来像这样:
In Postman, you can select the 'raw' data format and then 'JSON (application/json)' to include this header. In my case it looks like this:
Alternatively, you can also try it with curl (source):
curl -X POST -H "Content-Type: application/json" -d '{"player": {"name": "test","room_id": 0,"skin_id": 1,"head_id": 2,"torso_id": 3,"legs_id": 4,"x_position": 5,"y_position": 6,"direction": 7,"action": "","gender": "f"}}' localhost:3000/players.json
如果省略-H "Content-Type: application/json"，则将收到400错误的响应，提示未找到参数"，如果包含它应该可以使用.
If you omit the -H "Content-Type: application/json", then you will receive a 400 response with the "param not found" error, if you include it it should work.
这篇关于我应该如何格式化JSON POST请求到我的rails应用程序?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
