我想开发一个应用程序。 每个用户都创建自己的日程安排。
我想将数据显示如下;
schedule title (user name)
day1(mm/dd,yyyy)
09:00 Math
11:00 Science
Room name A
day2(mm/dd,yyyy)
10:00 Physics
13:00 Music
Room name B
如何在活动模型中显示课程信息?
e.g。标题(数学,科学),时间(从,到)......
当我尝试显示页面时出现以下错误。
NoMethodError (undefined method `event' for #<Room:0x007fb2149a1ac8>
Did you mean? events
events=):
app/views/schedules/_schedule.html.erb:6:in `block in _app_views_schedules__schedule_html_erb___2809280481749604534_70201410929300'
app/views/schedules/_schedule.html.erb:4:in `_app_views_schedules__schedule_html_erb___2809280481749604534_70201410929300'
app/views/users/show.html.erb:11:in `_app_views_users_show_html_erb__1629176981125983348_70201561746560'
如果你能给我任何建议,我将不胜感激。
user.rb
class User < ActiveRecord::Base
has_many :schedlues
has_many :rooms, through: :schedules
...
schedule.rb
class Schedule < ActiveRecord::Base
belongs_to :user
has_many :rooms
...
room.rb
class Room < ActiveRecord::Base
belongs_to :schedlue
has_many :events
event.rb
class Event < ActiveRecord::Base
belongs_to :room
(虽然我认为'房间has_many事件'不合适,但我不知道。)
模式
create_table "users", force: :cascade do |t|
t.string "name"
t.string "email"
...
end
create_table "schedules", force: :cascade do |t|
t.string "title"
t.integer "user_id"
...
end
create_table "rooms", force: :cascade do |t|
t.date "date"
t.string "room_name"
t.integer "schedule_id"
...
end
create_table "events", force: :cascade do |t|
t.time "from"
t.time "to"
t.string "title"
...
end
users_controller.rb
class UsersController < ApplicationController
def show
@user = User.find(params[:id])
@schedules = @user.schedules.paginate(page: params[:page])
end
...
show.html.erb
<% if @user.schedules.any? %>
<ol class="schedules">
<%= render @schedules %>
</ol>
<%= will_paginate @schedules %>
<% end %>
_schedule.html.erb
<li>
<p>
<% schedule.room.each do |a| %>
<p><b>Day <%= a.day %></b></p>
<% a.event.each do |e| %> #error occur
<% if e.title.any? %>
<%= e.title %>
<% end %>
<% end %>
<p>room: <%= a.room_name %></p>
<% end %>
</p>
</li>
答案 0 :(得分:0)
如错误消息所述,Room
没有方法event
。原因是在您的模型中,您有has_many :events
,它会为您提供Association
而不是单个事件。所以试试:
room.events.first
或类似
room.events.each do |event|
puts event
end
这应该可以解决您现在遇到的错误。
编辑我忘记查看您的模板了。以下行错误:
<% a.event.each do |e| %>
如上所述,解决方案是:
<% a.events.each do |e| %>
有趣的是,你没有在schedule.room
上收到错误。这也是错误的,它必须是schedule.rooms
。