您好,我有一个带有三个嵌套模型Client,Site和Damper的小应用程序。当我添加一个client或client_site时,一切都很好...但是当我添加一个阻尼器时,我得到了
Routing Error
uninitialized constant Sites
在控制台中
Started GET "/clients/1/sites/1/dampers/new" for my ip at 2018-10-26 18:05:29 +1000
ActionController::RoutingError (uninitialized constant Sites):
app/controllers/clients/sites/dampers_controller.rb:1:in `<main>'
路线
resources :clients do
resources :sites, controller: 'clients/sites' do
resources :dampers, controller: 'clients/sites/dampers'
end
end
楷模
app / models / client.rb
class Client < ApplicationRecord
has_many :sites
end
app / models / site.rb
class Site < ApplicationRecord
belongs_to :client
has_many :dampers
end
app / models / damper.rb
class Damper < ApplicationRecord
belongs_to :site
end
请注意,我犯了一个错误,它原来是:sites,但是即使更改了此错误,仍然存在错误。
控制器
app / controllers / clients_controller.rb
class ClientsController < ApplicationController
before_action :set_client, only: [:show, :edit, :update, :destroy]
# GET /clients
# GET /clients.json
def index
@clients = Client.all
end
# GET /clients/1
# GET /clients/1.json
def show
@client = Client.find(params[:id])
@sites = @client.sites
end
# GET /clients/new
def new
@client = Client.new
end
# GET /clients/1/edit
def edit
end
# POST /clients
# POST /clients.json
def create
@client = Client.new(client_params)
respond_to do |format|
if @client.save
format.html { redirect_to @client, notice: 'Client was successfully created.' }
format.json { render :show, status: :created, location: @client }
else
format.html { render :new }
format.json { render json: @client.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /clients/1
# PATCH/PUT /clients/1.json
def update
respond_to do |format|
if @client.update(client_params)
format.html { redirect_to @client, notice: 'Client was successfully updated.' }
format.json { render :show, status: :ok, location: @client }
else
format.html { render :edit }
format.json { render json: @client.errors, status: :unprocessable_entity }
end
end
end
# DELETE /clients/1
# DELETE /clients/1.json
def destroy
@client.destroy
respond_to do |format|
format.html { redirect_to clients_url, notice: 'Client was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_client
@client = Client.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def client_params
params.require(:client).permit(:name)
end
end
app / controllers / clients / sites_controller.rb
class Clients::SitesController < ApplicationController
before_action :set_client
before_action :set_site, except: [:new, :create]
# GET /sites
# GET /sites.json
def index
@sites = Site.all
end
# GET /sites/1
# GET /sites/1.json
def show
@client = Client.find(params[:client_id])
@site = @client.sites.find(params[:id])
end
# GET /sites/new
def new
@site = Site.new
end
# GET /sites/1/edit
def edit
end
# POST /sites
# POST /sites.json
def create
@site = Site.new(site_params)
@site.client = @client
respond_to do |format|
if @site.save
format.html { redirect_to @client, notice: 'Site was successfully created.' }
format.json { render :show, status: :created, location: @client }
else
format.html { render :new }
format.json { render json: @client.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /sites/1
# PATCH/PUT /sites/1.json
def update
respond_to do |format|
if @site.update(site_params)
format.html { redirect_to @client, notice: 'Site was successfully updated.' }
format.json { render :show, status: :ok, location: @site }
else
format.html { render :edit }
format.json { render json: @client.errors, status: :unprocessable_entity }
end
end
end
# DELETE /sites/1
# DELETE /sites/1.json
def destroy
@site.destroy
respond_to do |format|
format.html { redirect_to sites_url, notice: 'Site was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_site
@site = Site.find(params[:id])
end
def set_client
@client = Client.find(params[:client_id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def site_params
params.require(:site).permit(:name, :client_id)
end
end
应用程序/控制器/客户端/站点/dampers_controller.rb
class Sites::DampersController < ApplicationController
before_action :set_client
before_action :set_site
before_action :set_damper, except: [:new, :create]
# GET /dampers
# GET /dampers.json
def index
@dampers = Damper.all
end
# GET /dampers/1
# GET /dampers/1.json
def show
end
# GET /dampers/new
def new
@damper = Damper.new
end
# GET /dampers/1/edit
def edit
end
# POST /dampers
# POST /dampers.json
def create
@damper = Damper.new(damper_params)
@damper.site = @site
respond_to do |format|
if @damper.save
format.html { redirect_to @site, notice: 'Damper was successfully created.' }
format.json { render :show, status: :created, location: @site }
else
format.html { render :new }
format.json { render json: @site.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /dampers/1
# PATCH/PUT /dampers/1.json
def update
respond_to do |format|
if @damper.update(damper_params)
format.html { redirect_to @site, notice: 'Damper was successfully updated.' }
format.json { render :show, status: :ok, location: @site }
else
format.html { render :edit }
format.json { render json: @site.errors, status: :unprocessable_entity }
end
end
end
# DELETE /dampers/1
# DELETE /dampers/1.json
def destroy
@damper.destroy
respond_to do |format|
format.html { redirect_to dampers_url, notice: 'Damper was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_damper
@damper = Damper.find(params[:id])
end
def set_site
@site = Site.find(params[:site_id])
end
def set_client
@client = Client.find(params[:client_id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def damper_params
params.require(:damper).permit(:location, :number, :site_id, :client_id)
end
end
ActionController :: RoutingError(未初始化的常量Sites)
该dampers_controller.rb
下坐着controllers/clients/sites
,所以你需要改变类名来
class Clients::Sites::DampersController < ApplicationController
代替
class Sites::DampersController < ApplicationController
为了命名空间
另外,我建议您看看controller-namespaces-and-routing
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