rails日记1

assert_select "div" <div>foobar</div>
assert_select "div", "foobar" <div>foobar</div>
assert_select "div.nav" <div class="nav">foobar</div>
assert_select "div#profile" <div id="profile">foobar</div>
assert_select "div[name=yo]" <div name="yo">hey</div>
assert_select "a[href=?]", ’/’, count: 1 <a href="/">foo</a>
assert_select "a[href=?]", ’/’, text: "foo" <a href="/">foo</a>

rails generate devise:views
      invoke  Devise::Generators::SharedViewsGenerator
      create    app/views/devise/shared
      create    app/views/devise/shared/_links.html.erb
      invoke  form_for
      create    app/views/devise/confirmations
      create    app/views/devise/confirmations/new.html.erb
      create    app/views/devise/passwords
      create    app/views/devise/passwords/edit.html.erb
      create    app/views/devise/passwords/new.html.erb
      create    app/views/devise/registrations
      create    app/views/devise/registrations/edit.html.erb
      create    app/views/devise/registrations/new.html.erb
      create    app/views/devise/sessions
      create    app/views/devise/sessions/new.html.erb
      create    app/views/devise/unlocks
      create    app/views/devise/unlocks/new.html.erb
      invoke  erb
      create    app/views/devise/mailer
      create    app/views/devise/mailer/confirmation_instructions.html.erb
      create    app/views/devise/mailer/reset_password_instructions.html.erb
      create    app/views/devise/mailer/unlock_instructions.html.erb

 home_about GET      /home/about(.:format)                  home#about
               home_team GET      /home/team(.:format)                   home#team
               home_help GET      /home/help(.:format)                   home#help
                   users GET      /users(.:format)                       users#index
                         POST     /users(.:format)                       users#create
                new_user GET      /users/new(.:format)                   users#new
               edit_user GET      /users/:id/edit(.:format)              users#edit
                    user GET      /users/:id(.:format)                   users#show
                         PATCH    /users/:id(.:format)                   users#update
                         PUT      /users/:id(.:format)                   users#update
                         DELETE   /users/:id(.:format)                   users#destroy
        new_user_session GET      /users/sign_in(.:format)               devise/sessions#new
            user_session POST     /users/sign_in(.:format)               devise/sessions#create
    destroy_user_session DELETE   /users/sign_out(.:format)              devise/sessions#destroy
 user_omniauth_authorize GET|POST /users/auth/:provider(.:format)        devise/omniauth_callbacks#passthru {:provider=>/(?!)/}
  user_omniauth_callback GET|POST /users/auth/:action/callback(.:format) devise/omniauth_callbacks#:action
           user_password POST     /users/password(.:format)              devise/passwords#create
       new_user_password GET      /users/password/new(.:format)          devise/passwords#new
      edit_user_password GET      /users/password/edit(.:format)         devise/passwords#edit
                         PATCH    /users/password(.:format)              devise/passwords#update
                         PUT      /users/password(.:format)              devise/passwords#update
cancel_user_registration GET      /users/cancel(.:format)                devise/registrations#cancel
       user_registration POST     /users(.:format)                       devise/registrations#create
   new_user_registration GET      /users/sign_up(.:format)               devise/registrations#new
  edit_user_registration GET      /users/edit(.:format)                  devise/registrations#edit
                         PATCH    /users(.:format)                       devise/registrations#update
                         PUT      /users(.:format)                       devise/registrations#update
                         DELETE   /users(.:format)                       devise/registrations#destroy
       user_confirmation POST     /users/confirmation(.:format)          devise/confirmations#create
   new_user_confirmation GET      /users/confirmation/new(.:format)      devise/confirmations#new
                         GET      /users/confirmation(.:format)          devise/confirmations#show
                    root GET      /                                      home#index

class UsersController < ApplicationController
def show
@user = User.find(params[:id])
debugger#调试器
end
def new
end
end

改写devise的controller

 devise_for :users, :controllers => {:registrations => "devise_customed/registrations"}

之后继承改写

    class DeviseCustomed::RegistrationsController < Devise::RegistrationsController
      def new
        super
      end  

      def create
        # add custom create logic here
        super do |resource|
          resource.group = params[:user][:group]
        end
      end  

      def update
        super
      end

健壮参数,修改registrations_controller.rb

class DeviseCustomed::RegistrationsController < Devise::RegistrationsController  
  def new  
    super  
  end  
  
  def create  
    @user = User.new(user_params)
    if @user.save

    else
      render 'new'
    end
    # add custom create logic here  
    super do |resource|  
      resource.group = params[:user][:group]  
    end  
  end  
  
  def update  
    super  
  end  

  private
    def user_params
      params.require(:user).premit(:name, :name, :encrypted_password)
    end
end  

pluralize 方法的第一个参数是整数,返回值是这个数字和第二个参数组合在一起后,正确的单
复数形式。

注册成功

添加

 if @user.save
      redirected_ro @user
    else
      render 'new'
    end

当修改

config.authentication_keys = [ :username]

提交信息会报错，那么添加

protected

  def email_required?
    false
  end

这种是不要email的情况，如果要email的话还要添加

config.authentication_keys = [ :username, :email ]

SQLiteException: database is locked异常的解决办法

文件数据库sqlite，同一时刻允许多个进程/线程读，但同一时刻只允许一个线程写。 在操行写操作时，数据库文件被琐定，此时任何其他读/写操作都被阻塞，如果阻塞超过5秒钟(默认是5秒，能过重新编译sqlite可以修改超时时间)，就 报"database is locked"错误。

所以，在操作sqlite时，应该即时关闭连接；打开连接后，尽量减少非常费时的操作。

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception
  before_action :mailer_set_url_options
  before_action :configure_permitted_parameters, if: :devise_controller?

  def mailer_set_url_options
    ActionMailer::Base.default_url_options[:host] = request.host_with_port
  end
  protected
  def configure_permitted_parameters
    devise_parameter_sanitizer.for(:sign_up) << :name　　　　#修改参数，可以在表里添加name
  end
end

修改之后，最好重启server，然后rake db:migrate:reset