rails出现No route matches [POST] "/user/register"错误
（如果不了解题意，请查看上一篇文章：搭建rails项目）
问题是这样的：
index.html.erb文件内容：
<h2>Register</h2> <%= form_for :user do |form| %> <fieldset> <legend>Enter Your Details</legend> <div class="form_row"> <label for="screen_name">Screen name:</label> <%= form.text_field :screen_name, :size => User::SCREEN_NAME_SIZE, :maxlength => User::SCREEN_NAME_MAX_LENGTH %> </div> <div class="form_row"> <label for="email">Email:</label> <%= form.text_field :email, :size => User::EMAIL_SIZE, :maxlength => User::EMAIL_MAX_LENGTH %> </div> <div class="form_row"> <label for="password">Password:</label> <%= form.password_field :password, :size => User::PASSWORD_SIZE, :maxlength => User::PASSWORD_MAX_LENGTH %> </div> <div class="form_row"> <%= submit_tag "Register!", :class => "submit" %> </div> </fieldset> <% end %>
application.html.erb文件内容如下：
<!DOCTYPE html> <html> <head> <title><%= @title %></title> <%= stylesheet_link_tag "application", :media => "all" %> <%= stylesheet_link_tag "site" %> <%= javascript_include_tag "application" %> <%= csrf_meta_tags %> </head> <body> <%= yield %> </body> </html>
user.rb文件内容如下：(可选，由于index.html文件对文本框的大小进行了限制，所以这里附上这个文件)
class User < ActiveRecord::Base # attr_accessible :title, :body SCREEN_NAME_MIN_LENGTH = 4 SCREEN_NAME_MAX_LENGTH = 20 PASSWORD_MIN_LENGTH = 4 PASSWORD_MAX_LENGTH = 20 EMAIL_MAX_LENGTH = 50 SCREEN_NAME_RANGE = SCREEN_NAME_MIN_LENGTH..SCREEN_NAME_MAX_LENGTH PASSWORD_RANGE = PASSWORD_MIN_LENGTH..PASSWORD_MAX_LENGTH SCREEN_NAME_SIZE = 20 PASSWORD_SIZE = 10 EMAIL_SIZE = 30 end访问：http://localhost:3000/site/index
点击“Register”进行注册，出现错误“Routing Error No route matches [POST]”
跳转到的页面如下：
![rails出现No route matches [POST] "/user/register"错误_第1张图片](http://img.e-com-net.com/image/info5/c4a36bbfa6bf435ea99940c7abf99a88.jpg)
如何解决这样的问题呢，我查看了routes.rb文件，文件如下：
Ch14::Application.routes.draw do get "user/index" get "user/register" # The priority is based upon order of creation: # first created -> highest priority. # Sample of regular route: # match 'products/:id' => 'catalog#view' # Keep in mind you can assign values other than :controller and :action # Sample of named route: # match 'products/:id/purchase' => 'catalog#purchase', :as => :purchase # This route can be invoked with purchase_url(:id => product.id) # Sample resource route (maps HTTP verbs to controller actions automatically): # resources :products # Sample resource route with options: # resources :products do # member do # get 'short' # post 'toggle' # end # # collection do # get 'sold' # end # end # Sample resource route with sub-resources: # resources :products do # resources :comments, :sales # resource :seller # end # Sample resource route with more complex sub-resources # resources :products do # resources :comments # resources :sales do # get 'recent', :on => :collection # end # end # Sample resource route within a namespace: # namespace :admin do # # Directs /admin/products/* to Admin::ProductsController # # (app/controllers/admin/products_controller.rb) # resources :products # end # You can have the root of your site routed with "root" # just remember to delete public/index.html. # root :to => 'welcome#index' # See how all your routes lay out with "rake routes" # This is a legacy wild controller route that's not recommended for RESTful applications. # Note: This route will make all actions in every controller accessible via GET requests. # match ':controller(/:action(/:id))(.:format)' end
把最后一行代码 match ':controller(/:action(/:id))(:format)' 的注释去掉。
ok，再次点击的时候就不会跳转到错误界面了，而是不进行跳转，这是正常情况。
本文是 踏雁寻花 原创， 转载请注明出处：http://blog.csdn.net/tayanxunhua/article/details/8581802