Ruby on rails - 找不到InvitesController的模板＃create

Question

我想用rails 5和mongoid創建一個邀請系統。但是，當我想發送的電子郵件，我有此錯誤：

Recipient can't be blank 
something goes wrong 
Recipient can't be blank 
No template found for InvitesController#create, rendering head :no_content 
Completed 204 No Content in 137ms 

這裏是代碼：

invite.rb

class Invite 
    include Mongoid::Document 
    include Mongoid::Timestamps 

    field :email, type: String 
    field :token, type: String 

    belongs_to :project 
    belongs_to :sender_id, :class_name => 'User', inverse_of: :recipient_id 
    belongs_to :recipient_id, :class_name => 'User', inverse_of: :sender_id 

    before_create :generate_token 

    def generate_token 
    self.token = Digest::SHA1.hexdigest([self.project_id, Time.now, rand].join) 
    end 
end 

project.rb

class Project 
    include Mongoid::Document 
    include Mongoid::Timestamps 

    # Principle informations concerning project 
    field :title, type: String 
    field :description, type: String 
    field :client, type: String 
    field :deadline, type: String 
    field :creator_id, type: String 

    belongs_to :owner, :class_name => 'User', inverse_of: :members 
    has_many :members, :class_name => 'User', inverse_of: :owner 
    has_many :invites 
end 

user.rb

class User 
    include Mongoid::Document 
    # Include default devise modules. Others available are: 
    # :confirmable, :lockable, :timeoutable and :omniauthable 
    devise :database_authenticatable, :registerable, 
     :recoverable, :rememberable, :trackable, :validatable 

    ## Database authenticatable 
    field :email,    type: String, default: "" 
    field :encrypted_password, type: String, default: "" 

    ## Recoverable 
    field :reset_password_token, type: String 
    field :reset_password_sent_at, type: Time 

    ## Rememberable 
    field :remember_created_at, type: Time 

    ## Trackable 
    field :sign_in_count,  type: Integer, default: 0 
    field :current_sign_in_at, type: Time 
    field :last_sign_in_at, type: Time 
    field :current_sign_in_ip, type: String 
    field :last_sign_in_ip, type: String 

    has_many :projects, inverse_of: :projects 
    has_many :invitations, :class_name => 'Invite', :foreign_key => 'recipient_id' 
    has_many :sent_invites, :class_name => 'Invite', :foreign_key => 'sender_id' 
end 

形式爲用戶頁面上發送的邀請：

<%= form_for @invite do |f| %> 
      <%= f.text_field :project_id, :value => @project.id %> 
      <%= f.label :email %> 
      <%= f.email_field :email %> 
      <%= f.submit 'Send' %> 
     <% end %> 

invites_controller.rb

class InvitesController < ApplicationController 
    def new 
     @invite = Invite.new 
    end 

    def create 
     @invite = Invite.new(invite_params) 
     @invite.sender_id = current_user.id 
     if @invite.save 
      InviteMailer.new_user_invite(@invite, new_user_registration_path(:invite_token => @invite.token)).deliver 
      redirect_to user_path(current_user.id) 
     else 
      puts @invite.errors.full_messages 
      puts "something goes wrong" 
     end 
     puts @invite.errors.full_messages 
    end 

    private 
    def invite_params 
     params.require(:invite).permit(:email, :token, :sender_id, :recipient_id, [:project_id]) 
    end 
end 

我希望主人能邀請其他人，如果用戶存在，則將郵件發送給現有用戶，但如果不存在，則發送鏈接以創建帳戶和註冊表ter在項目中，

我忘了什麼？爲什麼我有這個錯誤？

謝謝！

Answer 1

在創建操作中，最後需要渲染頁面，否則需要將用戶重定向到其他頁面。例如，改變你的代碼是這樣的：

def create 
     @invite = Invite.new(invite_params) 
     @invite.sender_id = current_user.id 
     if @invite.save 
      InviteMailer.new_user_invite(@invite, new_user_registration_path(:invite_token => @invite.token)).deliver 
      redirect_to user_path(current_user.id) 
     else 
      puts @invite.errors.full_messages 
      puts "something goes wrong" 
      redirect_to :back #OR render :new 
     end 

end 

觀察到，我將用戶重定向回來，如果保存對象失敗（在「其他」塊的結尾）

如果你想更好的代碼，你應該有這樣的事情：

def create 
    @invite = Invite.new(invite_params) 
    @invite.sender_id = current_user.id 
    respond_to do |format| 
     if @invite.save 
     format.html { redirect_to '/', notice: 'Invite was successfully created' } 
     format.json { render :@invite.json } 
     else 
     format.html { render :new } 
     format.json { render json: @invite.errors, status: :unprocessable_entity } 
     end 
    end 
end 

上面的代碼處理HTML和JSON請求

Answer 2

默認情況下，Rails中的控制器自動呈現名稱與方法名稱相對應的視圖。 create方法中的else塊沒有響應，因此rails正在尋找名爲create的視圖進行渲染。將render :new放在該塊中，因此new視圖將被重新渲染。

Answer 3

更改你這樣的創建方法：

def create 
    @invite = Invite.new(invite_params) 
    @invite.sender_id = current_user.id 
    if @invite.save 
    InviteMailer.new_user_invite(@invite, new_user_registration_path(:invite_token => @invite.token)).deliver 
    redirect_to user_path(current_user.id) 
    else 
    puts @invite.errors.full_messages 
    puts "something goes wrong" 
    render :new 
    end 
end