现在,我正在显示一个TrainingEvents索引页面,其中包含每个位置的所有事件。我想做的就是为该特定区域创建一个TrainingEvents索引页面。
我的模型如下:
class TrainingEvents
belongs_to :location, optional: true
class Locations
belongs_to :region, optional: true
belongs_to :user, optional: true
has_many :careers, dependent: :destroy
has_many :training_events, dependent: :destroy
class Regions
has_many :locations, dependent: :destroy
has_many :zipcodes, dependent: :destroy
has_many :careers, through: :locations
has_many :training_events, through: :locations
has_and_belongs_to_many :logos
has_and_belongs_to_many :employees
我的TrainingEventsController看起来像:
class TrainingEventsController < ApplicationController
respond_to :json, :html
before_action :filter_time
def index
@events = TrainingEvent.by_month(@time.month).ascending
@events = @events.by_state(params[:state]) if params[:state].present?
@events = @events.by_city(params[:city]) if params[:city].present?
end
def show
@event = TrainingEvent.find_by!(url_name: params[:id])
add_breadcrumb 'Home', root_path
add_breadcrumb 'Training & Events', training_events_path
add_breadcrumb @event.name
end
def region_index
@events = TrainingEvent.by_month(@time.month).ascending
end
private
def filter_time
@time = if params[:month].present?
params[:month].to_datetime
else
Time.zone.now
end
end
end
这里的想法是创建一个单独的方法region_index,然后沿新路线传递。因此,在我所在地区的显示页面上,我有以下内容:
<%= link_to 'View Region', region_index_path(@region) %>
链接转到正确的页面,但是加载数据是我遇到的问题。这是Slim视图:
= content_for :body do
.container.banner-container
.row.mt-4
.col-sm-12
= link_to 'Training Policies', '/training_policies', class: 'custom-button float-right'
= form_tag :training_events, method: :get, id: 'filter-form' do
.row.event-filter.align-items-center
.col-lg-7.col-md-5
= hidden_field_tag :month, params[:month]
.month-selector
= fa_icon 'chevron-left', data: { month: @time.last_month }
h3 #{@time.strftime('%B %Y')}
= fa_icon 'chevron-right', data: { month: @time.next_month }
.col-lg-5.col-md-3.filter-select
=link_to 'View All Trainings', training_events_path, class: 'custom-button float-right'
- (@time.beginning_of_month.to_date..@time.end_of_month.to_date).each do |date|
- events = @events.select { |event| event.time_start.to_date == date }
- if events.count.positive?
.row
.col-sm-12
.event-header
span.date #{date.strftime('%d')}
span #{date.strftime('%A')}
- events.each do |event|
.row.event-row
.col-sm-8
label.event-title #{event.name}
.event-col-details
- if event.time_start.present? && event.time_end.present?
= fa_icon 'clock-o'
p #{event.time_start.strftime('%l:%M %p')} - #{event.time_end.strftime('%l:%M %p')}
- if event.street_address.present?
= fa_icon 'map-marker'
p #{event.street_address}
- if event.city.present? && event.state.present?
= fa_icon 'map-marker'
p #{event.city}, #{event.state}
.col-sm-4.details-cont
= link_to 'view details', training_event_path(event.url_name)
.row
.col-sm-12
.border
我知道我需要点击@ events.select并可能要点击位置然后再点击区域,但是我的脑袋撞墙了。我尝试了各种方法来做@ events.locations.select,这会得到NoMethodError,甚至是@ events.regions.select,也将得到同样的结果。
那么我该如何建立直通关系并仅显示那些结果?
编辑: 我还尝试过在我的TrainingEvents中添加一个范围,以为我可以通过以下方式查询出与region.location_id匹配的位置ID:
scope :region_index, -> {where(location_id: region.location_id)}
我最终得到
未定义的局部变量或方法“区域”用于
是你的意思吗?关系
答案 0 :(得分:0)
区域未在您的范围上下文中定义。我看到您已经熟悉使用变量的作用域,看起来您只是忘记了这些细节,需要新鲜的眼光。
scope :region_index, -> (region) { where(location_id: region.location_id)}