Ruby on rails 嵌套资源-关联失败
我有一个用户通过联接表UserEvent拥有许多事件（反之亦然）。我应该能够调用current_user.events来获取用户创建的事件列表。正在创建事件，但它们没有填充联接表，因此我可以调用user.Events。为什么?Ruby on rails 嵌套资源-关联失败,ruby-on-rails,database,nested,associations,Ruby On Rails,Database,Nested,Associations,我有一个用户通过联接表UserEvent拥有许多事件（反之亦然）。我应该能够调用current_user.events来获取用户创建的事件列表。正在创建事件，但它们没有填充联接表，因此我可以调用user.Events。为什么? class User < ActiveRecord::Base has_many :user_events, inverse_of: :user has_many :events, through: :user_events has_ma
class User < ActiveRecord::Base
has_many :user_events,
inverse_of: :user
has_many :events,
through: :user_events
has_many :user_activities,
inverse_of: :user
has_many :activities,
through: :user_activities
validates_presence_of :first_name
validates_presence_of :last_name
validates_email_format_of :email
validates_presence_of :role
def is_admin?
role == 'admin'
end
end
class UserEvent < ActiveRecord::Base
belongs_to :event
belongs_to :user
validates_presence_of :user
validates_presence_of :event
validates_numericality_of :user_id
validates_numericality_of :event_id
end
class Event < ActiveRecord::Base
validates_presence_of :start_time
validates_time :start_time, before: :end_time
validates_presence_of :end_time
validates_time :end_time
validates_presence_of :description
validates_presence_of :city
validates_presence_of :state
validates_presence_of :activity_id
belongs_to :activity,
inverse_of: :events
has_many :user_events,
inverse_of: :event
has_many :users,
through: :user_events
has_many :comments,
inverse_of: :event
end
class UsersController < ApplicationController
before_filter :authenticate_user!
def index
@users = User.all
@activities = Activity.all
@events = Event.all
end
def show
@user = current_user
@events = Event.all
@activities = Activity.all
end
def update
if current_user.update(user_params)
current_user.save
redirect_to user_path, notice: 'User Information Successfully Updated!'
else
redirect_to user_activities_path
end
end
private
def user_params
params.require(:user).permit(:first_name, :last_name, :email, activity_ids: [], event_ids: [])
end
end
class EventsController < ApplicationController
before_filter :authenticate_user!
def index
@events = Event.all
end
def new
@event = Event.new
@activities = Activity.all
end
def create
@event = current_user.events.build(event_params)#builds the event for the current user
if @event.save
redirect_to user_event_path(current_user, @event), notice: 'Event Created Successfully' #the route requires two inputs to get to the right place. check rake routes to see.
else
render :new
end
end
def show
@event = Event.find(params[:id])
@comment = Comment.new
end
def edit
@event = Event.find(params[:id])
end
def update
@event = Event.find(params[:id]) # has to match Edit with params[:id] otherwise undefined method `update' for nil:NilClass
if @event.update(event_params)
redirect_to user_event_path(current_user, @event), notice: 'Successfully Updated!'
else
render :edit
end
end
private
def event_params
params.require(:event).permit(:start_time, :end_time, :city, :state, :description, :location_name, :street_address, :num_attendees_requested, :activity_id)
end
end
Started POST "/users/1/events" for 127.0.0.1 at 2014-01-14 07:27:43 -0500
Processing by EventsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"d0MIFBOcK4vjs0cQk6mCcbjrJjB23VTnYIeEwOwiK8k=", "event"=>{"activity_id"=>"3", "start_time(1i)"=>"2014", "start_time(2i)"=>"1", "start_time(3i)"=>"14", "start_time(4i)"=>"14", "start_time(5i)"=>"27", "end_time(1i)"=>"2014", "end_time(2i)"=>"1", "end_time(3i)"=>"14", "end_time(4i)"=>"17", "end_time(5i)"=>"27", "num_attendees_requested"=>"4", "location_name"=>"Streets", "street_address"=>"123 All", "city"=>"Boston", "state"=>"MA", "description"=>"Biking all over the place"}, "commit"=>"Create Event", "user_id"=>"1"}
User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."id" = 1 ORDER BY "users"."id" ASC LIMIT 1
(0.2ms) BEGIN
SQL (60.9ms) INSERT INTO "events" ("activity_id", "city", "created_at", "description", "end_time", "location_name", "num_attendees_requested", "start_time", "state", "street_address", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) RETURNING "id" [["activity_id", 3], ["city", "Boston"], ["created_at", Tue, 14 Jan 2014 12:27:43 UTC +00:00], ["description", "Biking all over the place"], ["end_time", Tue, 14 Jan 2014 17:27:00 UTC +00:00], ["location_name", "Streets"], ["num_attendees_requested", 4], ["start_time", Tue, 14 Jan 2014 14:27:00 UTC +00:00], ["state", "MA"], ["street_address", "123 All"], ["updated_at", Tue, 14 Jan 2014 12:27:43 UTC +00:00]]
(21.2ms) COMMIT
Redirected to http://localhost:3000/users/1/events/10
Completed 302 Found in 91ms (ActiveRecord: 82.8ms)
Started GET "/users/1/events/10" for 127.0.0.1 at 2014-01-14 07:27:43 -0500
Processing by EventsController#show as HTML
Parameters: {"user_id"=>"1", "id"=>"10"}
User Load (0.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = 1 ORDER BY "users"."id" ASC LIMIT 1
Event Load (0.4ms) SELECT "events".* FROM "events" WHERE "events"."id" = $1 LIMIT 1 [["id", "10"]]
Activity Load (1.0ms) SELECT "activities".* FROM "activities" WHERE "activities"."id" = $1 ORDER BY "activities"."id" ASC LIMIT 1 [["id", 3]]
Comment Load (0.7ms) SELECT "comments".* FROM "comments" WHERE "comments"."event_id" = $1 [["event_id", 10]]
Rendered events/show.html.erb within layouts/application (58.9ms)
Completed 200 OK in 129ms (Views: 103.5ms | ActiveRecord: 4.1ms)
class用户“✓", "真实性令牌“=>”D0MIFBOCK4VJS0CQK6MCCJB23VTNYIEEWIK8K=”，“事件”=>{“活动id”=>“3”，“开始时间（1i）”=>“2014”，“开始时间（2i）”=>“1”，“开始时间（3i）”=>“14”，“开始时间（4i）”=>“14”，“开始时间（5i）”=>“27”，“结束时间（1i）”=>“2014”，“结束时间（2i）”=>“1”，“结束时间（14I）”、“结束时间（17）”，“num_Attenders_requested”=>“4”、“location_name”=>“Streets”、“street_address”=>“123 All”、“city”=>“Boston”、“state”=>“MA”、“description”=>“各地骑车”}、“commit”=>“Create Event”、“user_id”=>“1”}
用户加载（0.5ms）从“用户”中选择“用户”。*其中“用户”。“id”=1“用户”的订单。“id”ASC限制1
（0.2ms）开始
SQL（60.9ms）插入“事件”（“活动id”、“城市”、“创建时间”、“描述”、“结束时间”、“地点名称”、“请求的出席人数”、“开始时间”、“州”、“街道地址”、“更新时间”）值（$1、$2、$3、$4、$5、$6、$7、$8、$9、$10、$11）返回“id”[[“活动id”，3]，“城市”、“波士顿”]，[“创建时间”）“，2014年1月14日，星期二12:27:43 UTC+00:00]，“描述”，“骑自行车到处走”]，[“结束时间”，2014年1月14日，星期二17:27:00 UTC+00:00]，“地点名称”，“街道”]，[“要求出席人数”，4]，“开始时间”，2014年1月14日，星期二14:27:00 UTC+00:00]，“州”，“马”，[“街道地址”，“123全部”]，[“更新时间”，2014年1月14日星期二12:27:43 UTC+00:00]]
（21.2ms）提交
重定向到http://localhost:3000/users/1/events/10
91毫秒内完成302次（ActiveRecord:82.8毫秒）
2014-01-14 07:27:43-0500开始获取127.0.0.1版本的“/users/1/events/10”
由EventsController处理#显示为HTML
参数：{“用户id”=>“1”，“id”=>“10”}
用户加载（0.4ms）从“用户”中选择“用户”。*其中“用户”。“id”=1“用户”的订单。“id”ASC限制1
事件加载（0.4ms）从“事件”中选择“事件”。*其中“事件”。“id”=$1限制1[[“id”，“10”]]
活动负载（1.0ms）选择“活动”。*从“活动”中选择“活动”。“id”=$1订单由“活动”。“id”ASC限制1[[“id”，3]]
评论加载（0.7ms）选择“评论”。*从“评论”中选择“评论”。“事件id”=$1[[“事件id”，10]]
布局/应用程序中的呈现事件/show.html.erb（58.9ms）
在129ms内完成200 OK（视图：103.5ms |活动记录：4.1ms）