Question

我有一个带有3个对象的控制器，我想用每个对象调用相同的部分三次

class HomeController < ApplicationController
    def index
        @evaluations_teams = Evaluation.eager_load(:user).where(users: {status: true}).where(team_id: current_user.student_details.last.team_id).all.order(created_at: :desc).limit 5

        @evaluations_stage = Evaluation.eager_load(:user).where(users: {status: true}).where(stage_id: current_user.student_details.last.stage_id).all.order(created_at: :desc).limit 5

        @evaluations_schools = Evaluation.eager_load(:user).where(users: {status: true}).where(school_id: current_user.student_details.last.school_id).all.order(created_at: :desc).limit 5
    end
end

INDEX.HTML.ERB

<%= render 'home/partials/loop_areas', locals: {evaluations:@evaluations_teams} %>

<%= render 'home/partials/loop_areas', locals: {evaluations:@evaluations_stage} %>

<%= render 'home/partials/loop_areas', locals: {evaluations:@evaluations_schools} %>

部分：home / partials / _loop_areas.html.erb

<% @evaluations.each do |evaluation| %>
<div class="div-card-infosaluno">
    <div class="card-aluno"><%= evaluation.user.full_name %></div>
    <div class="card-serie"><%= "#{evaluation.stage.name} · #{evaluation.school.name}" %></div>
</div>
<% end %>

返回：

未定义的方法`每个＆＃39;为零：NilClass

on＆lt;％@ evaluations.each do | evaluation | ％GT;

我该怎么做？

Answer 1

您尝试访问部分中的实例变量@evaluations，但未在控制器操作中定义。

您需要循环遍历局部变量evaluations。

<%# home/partials/_loop_areas.html.erb %>

<% evaluations.each do |evaluation| %>
  ...
<% end %>

你的观点应该是

<%= render 'home/partials/loop_areas', evaluations: @evaluations_teams %>

<%= render 'home/partials/loop_areas', evaluations: @evaluations_stage %>

<%= render 'home/partials/loop_areas', evaluations: @evaluations_schools %>

您也可以将散列传递给render方法，但我觉得它更冗长。

<%= render partial: 'home/partials/loop_areas', locals: { evaluations: @evaluations_schools } %>

Answer 2

请在Partial中尝试以下代码：home / partials / _loop_areas.html.erb

它应该按照您的预期工作。

    <% evaluations = local_assigns[:evaluations] %>

    <% evaluations.each do |evaluation| %>
    <div class="div-card-infosaluno">
        <div class="card-aluno"><%= evaluation.user.full_name %></div>
        <div class="card-serie"><%= "#{evaluation.stage.name} · #{evaluation.school.name}" %></div>
    </div>
    <% end %>

感谢。

在同一页面中重用部分内容

2 个答案: