我想通過我的Android應用程序發送JSON,在MySQL數據庫的「Category」表中創建一個新行。服務器端編碼在RubyOnRails中完成。但是我在服務器端收到Uninitialised常量錯誤。該錯誤是如下在導軌中的POST錯誤
ActionController::RoutingError (uninitialized constant CategoryController):
我rotues.rb文件
ROMS::Application.routes.draw do
resources :categories
resources :projects
get "category/new"
get "category/index"
get "category/show"
get "category_controller/index"
get "category_controller/show"
post "category/create"
我已經給類/創建的URL發送JSON。我的類別控制器類如下所示:
class CategoriesController < ApplicationController
# GET /categories
# GET /categories.json
def index
@categories = Category.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: @categories }
end
end
# GET /categories/1
# GET /categories/1.json
def show
@category = Category.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: @category }
end
end
# GET /categories/new
# GET /categories/new.json
def new
@category = Category.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: @category }
end
end
# GET /categories/1/edit
def edit
@category = Category.find(params[:id])
end
# POST /categories
# POST /categories.json
def create
@category = Category.new(params[:category])
respond_to do |format|
if @category.save
format.html { redirect_to @category, notice: 'Category was successfully created.' }
format.json { render json: @category, status: :created, location: @category }
else
format.html { render action: "new" }
format.json { render json: @category.errors, status: :unprocessable_entity }
end
end
end
# PUT /categories/1
# PUT /categories/1.json
def update
@category = Category.find(params[:id])
respond_to do |format|
if @category.update_attributes(params[:category])
format.html { redirect_to @category, notice: 'Category was successfully updated.' }
format.json { head :ok }
else
format.html { render action: "edit" }
format.json { render json: @category.errors, status: :unprocessable_entity }
end
end
end
# DELETE /categories/1
# DELETE /categories/1.json
def destroy
@category = Category.find(params[:id])
@category.destroy
respond_to do |format|
format.html { redirect_to categories_url }
format.json { head :ok }
end
end
end
我不確定需要初始化哪些內容以在表中創建一個包含我的值的行。請指教。另外請建議,如果我需要在服務器端解析JSON以創建一個新行。我讀到這是由ROR處理,但不知道。
由於我是一個完整的新手在ROR,道歉,如果這聽起來是一個基本問題。謝謝。
謝謝。有效。實際上,我通過生成腳手架創建了Controller類,因此創建了這種方法。無論如何,我改變了我的路線文件發佈「類別/創建」,它最初發布「類別/創建」。在我的網址中也將類別更改爲類別。再次感謝。 – Gaurav