Question

我正在使用ruby开发一个消息传递应用程序，当前遇到一个无法修复的阻止程序。我一直在使用教程，我认为我找不到解决方案的部分原因是因为这一点。我的应用程序允许用户登录并注册，然后可以添加，查看和编辑联系人。最后，可以将消息发送给不同的收件人。问题是，我无法在联系人中找到收件人并向他们发送消息。我只能选择我的名字作为用户（这不是它的意图）。我已经附加了这里使用的控制器：

contacts_controller

class ContactsController < ApplicationController
    def index
        @contacts = Contact.all
    end

    def new
        @contact = Contact.new
    end

    def create
        @contact = Contact.new(contact_params)
        if @contact.save
            flash[:success]= "new contact successfully added!"
            redirect_to contacts_path
        else
            render 'new'
        end
    end

    def edit
        @contact = Contact.find(params[:id])
    end

    def update
        @contact = Contact.find(params[:id])
         permitted_columns = params.require(:contact).permit(:name, :company, :email, :phone)
        @contact.update_attributes(permitted_columns)
        redirect_to contacts_path
    end

    def destroy
        @contact = Contact.find(params[:id])
        @contact.destroy
        redirect_to contacts_path
    end

    private

    def contact_params
        params.require(:contact).permit(:name, :company, :email, :phone)
    end
end

messages_controller

class MessagesController < ApplicationController

    def index
        @messages = Recipient.where(:user_id => current_user.id).order('created_at DESC')
    end

    def new
        @message = Message.new
        @recipients = Contact.all
    end

    def create
      @message = current_user.messages.build(message_params)

      if @message.save
        flash[:success]= "Message sent!"
        redirect_to contacts_path 
      else
        flash[:alert]= "sorry!message unsent"
        render :new
      end
    end

    private

    def message_params
        params.require(:message).permit(:body, :sender_id, user_tokens:[]) 
    end
end

users_controller

class UsersController < ApplicationController

    def index
    end

    def create
        user = User.new(user_params)
        if user.save
            session[:user_id] = user.id
            redirect_to '/contact'
        else
            flash[:register_errors] = user.errors.full_messages
            redirect_to '/'
        end
    end

    private

    def user_params
         params.require(:user).permit(:fname, :lname, :email, :password, :password_confirmation)
    end
end

sessions_controller

class SessionsController < ApplicationController

    def create
        user = User.find_by(email:login_params[:email])
        if user && user.authenticate(login_params[:password])
            session[:user_id] = user.id
            redirect_to '/contact'
        else
            flash[:login_errors] = ['invalid username or password']
            redirect_to '/'
        end
    end

    def destroy
        session[:user_id] = nil
        redirect_to '/', notice: 'Successfully logged out!'
    end

    private

    def login_params
        params.require(:login).permit(:email,:password)
    end
end

_recipient.html.erb由new.html.erb呈现。这是代码：

    <div class="container vertical-center">
 <div id ="stream">
    <%= form_for :message, url:messages_path do |f| %>
    <%= f.text_area :body, id: "url", placeholder: "Message", class: "message_body" %>
    <div id="stream-list" class="follow-list">
        <ul>
            <% @recipients.each do |contact| %>
            <label for="user<%=contact.id%>" >
                <li id="stream_item">
                    <span class="list-group-item"><%= contact.name %></span><%= check_box_tag "message[user_tokens][]",user.id, @message.users.include?(user), id: "user#{user.id}" %>
               </li>
            </label>
            <br>
            <% end %>
        </ul>
    </div>
    <div class="stream-footer">
        <%= f.button :submit, class: "btn btn-success" %>
        <% end %>
    </div>

 </div> 
</div>

这是我尝试写消息时出现的错误

Answer 1

不清楚为什么在视图模板中使用局部变量user。我认为这只是一个错误，应该使用contact变量代替

：

<span class="list-group-item"><%= contact.name %></span><%= check_box_tag "message[user_tokens][]", contact.id, @message.users.include?(contact), id: "user#{contact.id}" %>

还有一个小的HTML错误：ul标签应包含li标签；其他标签不允许作为直接后代。所以我还要将该列表重写为：

<ul>
  <% @recipients.each do |contact| %>
  <li id="stream_item">
    <label for="user<%=contact.id%>" >
      <span class="list-group-item"><%= contact.name %></span><%= check_box_tag "message[user_tokens][]", contact.id, @message.users.include?(contact), id: "user#{contact.id}" %>
    </label>
  </li>
  <br>
  <% end %>
</ul>

获取用户电话号码并在Rails中使用ruby发送消息

1 个答案: