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Question

我正試圖在用Mongool的Rails上創建用戶之間的聯繫。控制檯顯示一個SyntaxError本：

MyApp/app/controllers/contact_controller.rb:18: syntax error, unexpected end-of-input, expecting keyword_end 

這是控制器：

class ContactController < ApplicationController 
    def addNew 
    @newFriend = params[:username] 
    puts "***value of @newFriend***" 
    puts @newFriend 
    puts "***end****" 
    Contact.where(owner: current_user).where(friendlist: params[:username]) do |contact| 
     puts "***value of @contactAlreadyExists***" 
     puts contact 
     puts "***end****" 
     if contact == nil 
     Contact.find_or_create_by(owner: current_user) do |contact| 
      contact.push(friendlist: params[:username]) 
     end 
    redirect_to "/" 
    end 
end 

，這是模型：

class Contact 
    include Mongoid::Document 
    include Mongoid::Timestamps 


    field :owner, :type => String 
    field :friendlist, :type => Array 
    embedded_in :users 
end 

Answer 1

你錯過了在控制器的end。檢查下面的語法。

class ContactController < ApplicationController 
    def addNew 
    Contact.where(owner: current_user).where(friendlist: params[:username]) do |contact| 
     .... 

     if contact == nil 
     Contact.find_or_create_by(owner: current_user) do |contact| 

     <-- missing end Contact.find_or_create_by ... do |contact| 

     end <--- Okay with if block 

    <-- missing end Contact.where ... do |contact| 

    redirect_to "/" 
    end <--- Okay with fucntion addNew 
end <--- Okay with ContactController