我正在尝试通过我的 Android 应用程序发送的 JSON 在 MySQL 数据库的“类别”表中创建一个新行。服务器端编码在 RubyOnRails 中完成。但是我在服务器端收到未初始化的常量错误。错误如下
ActionController::RoutingError (uninitialized constant CategoryController):
我的 rotues.rb 文件是
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"
我在 URL 中给出了 category/create 来发送 JSON。我的 CategoryController 类如下：
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
我不确定需要初始化什么才能在表中创建包含我的值的行。请指教。另外请建议我是否需要在服务器端解析 JSON 以创建新行。我读到这是由 ROR 处理的，但不确定。
由于我是 ROR 的新手，如果这听起来是一个基本问题，我深表歉意。谢谢。