脚手架时的Rails 4布线错误

Question

执行rails g scaffold Project name:string ，创建新项目时出现路由错误。

我的步骤：
1）在/projects ，单击“新建项目”。
2）我填写项目详细信息，然后单击“创建项目”。
在这一步中，表格似乎是正确的：
form accept-charset="UTF-8" action="/projects" class="new_project" id="new_project" method="post"
3）我收到以下错误（路由错误）： No route matches [POST] "/projects/new"

鉴于：
当我重新加载/projects/new页面时，项目的创建工作正常

有什么原因吗？

Answer 1

以下是我拥有的文件（我大部分是通过脚手架创建的）

app / models / project.rb：

class Project < ActiveRecord::Base
end

app / controllers / projects_controller.rb ：（我只在这里显示我们感兴趣的方法）

  class ProjectsController < ApplicationController

  before_filter :authenticate_user!, :except => [:show, :index] 
  before_action :set_project, only: [:show, :edit, :update, :destroy]

  # GET /projects/new
  def new
    @project = Project.new
  end

  # GET /projects/1/edit
  def edit
  end

  # POST /projects
  # POST /projects.json
  def create
    @project = Project.new(project_params)

    respond_to do |format|
      if @project.save
        format.html { redirect_to @project, notice: 'Project was successfully created.' }
        format.json { render action: 'show', status: :created, location: @project }
      else
        format.html { render action: 'new' }
        format.json { render json: @project.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /projects/1
  # PATCH/PUT /projects/1.json
  def update
    respond_to do |format|
      if @project.update(project_params)
        format.html { redirect_to @project, notice: 'Project was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: 'edit' }
        format.json { render json: @project.errors, status: :unprocessable_entity }
      end
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_project
      @project = Project.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def project_params
      params.require(:project).permit(:name)
    end
end

和config / routes.rb：

Testproject::Application.routes.draw do
  devise_for :users
  resources :projects
  root 'projects#index'
end

谢谢你的帮助