Question

我有两个模特客户和队友。

客户有项目。

每位队友都有自己的teammate_project：

select（：client_project，current_user.clients.pluck（：project）

我需要在客户视图中显示哪些队友通过项目属于特定客户。但是在Clients / Teammates表中没有额外的DB列。

现在我有：

class FrontPagesController < ApplicationController
  def front
    if signed_in?
      mess {current_user}
      @clients.each do |client|
        client_teammates = current_user.teammates.where(client_project: client.project)
        @client_teammates = client_teammates.pluck(:secondname)
      end
    end
  end

  private

    def mess
      #multiple
        @accounts = yield.accounts.all
        @teammates = yield.teammates.all
        @clients = yield.clients.all
        @perks = yield.perks.all
      #single 
        @account = yield.accounts.build 
        @teammate = yield.teammates.build
        @client = yield.clients.build
        @perk = yield.perks.build
    end
end

并查看：

- @client_teammates.each do |c_t|
  %ul
    %li - #{c_t}

但它无法正常工作。这需要一些队友，但他们不正确

需要你的帮助

Answer 1

我不知道你想要什么，但你的错误是显而易见的。

您应该将代码更改为：

def front
  if signed_in?
    mess {current_user}
    @clients_teammates = []
    @clients.each do |client|
      client_teammates = current_user.teammates.where(client_project: client.project)
      @clients_teammates << client_teammates.pluck(:secondname)
    end
  end
end

您可以通过以下方式改进代码：

def front
  if signed_in?
    mess {current_user}
    @clients_teammates = current_user.teammates.where(client_project_id: @clients.pluck(:project_id))
    # if @clients is an Array (if you use Rails3)
    # @clients_teammates = current_user.teammates.where(client_project_id: @clients.map(&:project_id))  
  end
end

或者如果你是一个非常酷的程序员，你可以这样做：

def front
  if signed_in?
    mess {current_user}
    @clients_teammates = current_user.teammates.joins("JOIN projects ON teammates.client_project_id = projects.id").joints("JOIN clients ON projects.id = clients.project_id").where("clients.user_id = ?", current_user.id)  
  end
end

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