Neo4j宝石依赖::破坏不破坏

时间：2015-01-13 04:43:11

标签： ruby-on-rails neo4j neo4j.rb dependent-destroy

问题：依赖性破坏了这种设置的发生！帮我发现问题！

该活动有问题，每个问题可以有很多答案

event.rb 

  include Neo4j::ActiveNode

  has_many :both, :users, model_class: 'User', rel_class: 'Invite'
  has_many :in, :event_questions, type: 'questions_of', dependent: :destroy

eventquestion.rb 

  include Neo4j::ActiveNode

  has_one :out, :event, origin: :event_questions
  has_many :in, :event_answers, type: 'answers_of', dependent: :destroy

eventanswer.rb 

  include Neo4j::ActiveNode

  has_one :out, :event_question, origin: :event_answers

event_controller.rb 

   if event.destroy
        location.destroy
        flash[:success] = "Event deleted"
    else

我在neo4j主分支上。

gemlock表示

  neo4j (4.1.0)
  active_attr (~> 0.8)
  activemodel (~> 4)
  activesupport (~> 4)
  neo4j-core (~> 4.0.0)
  orm_adapter (~> 0.5.0)
  railties (~> 4)

我不认为这完全相关，但也许我疯了......但我确实有

before_action :admin_or_owner, only: [:destroy]

在我的eventquestion.rb和eventanswer.rb

上

但是，我没有在我的依赖性破坏中调用控制器方法，所以这不重要吗？

1 个答案:

答案 0 :(得分：1)

我认为您的应用中还会发生其他事情，因为如上所述，使用提供的代码，一切都按照我的预期运行。我使用提供的代码构建了应用的这一部分。

class Event
  include Neo4j::ActiveNode
    has_many :both, :users, model_class: 'User', rel_class: 'Invite'
    has_many :in, :event_questions, type: 'questions_of', dependent: :destroy
end

class User
  include Neo4j::ActiveNode
  has_many :both, :events, rel_class: 'Invite'
end

class Invite
  include Neo4j::ActiveRel
  from_class User
  to_class Event

  type 'INVITED_TO'
end

class EventQuestion
  include Neo4j::ActiveNode
  has_one :out, :event, origin: :event_questions
  has_many :in, :event_answers, type: 'answers_of', dependent: :destroy
end


class EventAnswer
  include Neo4j::ActiveNode
  has_one :out, :event_question, origin: :event_answers

end

在这里，我创建了两个事件，三个问题，三个答案并将它们连接在一起。你可以看到，摧毁这个事件会破坏它的问题，反过来会破坏它们的答案。

e1 = Event.create
 => #<Event> 
2.2.0 :052 > e2 = Event.create
 => #<Event> 
2.2.0 :053 > q1 = EventQuestion.create
 => #<EventQuestion> 
2.2.0 :054 > q2 = EventQuestion.create
 => #<EventQuestion> 
2.2.0 :055 > q3 = EventQuestion.create
 => #<EventQuestion> 
2.2.0 :056 > a1 = EventAnswer.create
 => #<EventAnswer> 
2.2.0 :057 > a2 = EventAnswer.create
 => #<EventAnswer> 
2.2.0 :058 > a3 = EventAnswer.create
 => #<EventAnswer> 
2.2.0 :059 > 
2.2.0 :060 >   e1.event_questions << q1
 CYPHER 4ms MATCH (start:`Event`), (end:`EventQuestion`) WHERE ID(start) = {start_id} AND ID(end) = {end_id} CREATE start<-[rel0:`questions_of`]-end | {:start_id=>23, :end_id=>25}
 => #<Neo4j::ActiveNode::Query::QueryProxy:0x007fc05e0f3248 @model=EventQuestion, @association=#<Neo4j::ActiveNode::HasN::Association:0x007fc05e170590 @type=:has_many, @name=:event_questions, @direction=:in, @target_class_name_from_name="EventQuestion", @target_class_option="::EventQuestion", @callbacks={:before=>nil, :after=>nil}, @origin=nil, @relationship_class=nil, @relationship_type=:questions_of, @dependent=:destroy, @unique=nil, @target_class_name="::EventQuestion", @target_class_name_or_nil="::EventQuestion">, @context="Event#event_questions", @options={:session=>Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', :start_object=>#<Event>, :node=>nil, :rel=>nil, :caller=>#<Event>}, @node_var=nil, @rel_var=:rel0, @session=Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', @caller=#<Event>, @chain=[], @starting_query=nil, @optional=nil, @params={}> 
2.2.0 :061 > e1.event_questions << q2
 CYPHER 4ms MATCH (start:`Event`), (end:`EventQuestion`) WHERE ID(start) = {start_id} AND ID(end) = {end_id} CREATE start<-[rel0:`questions_of`]-end | {:start_id=>23, :end_id=>26}
 => #<Neo4j::ActiveNode::Query::QueryProxy:0x007fc05e1f08f8 @model=EventQuestion, @association=#<Neo4j::ActiveNode::HasN::Association:0x007fc05e170590 @type=:has_many, @name=:event_questions, @direction=:in, @target_class_name_from_name="EventQuestion", @target_class_option="::EventQuestion", @callbacks={:before=>nil, :after=>nil}, @origin=nil, @relationship_class=nil, @relationship_type=:questions_of, @dependent=:destroy, @unique=nil, @target_class_name="::EventQuestion", @target_class_name_or_nil="::EventQuestion">, @context="Event#event_questions", @options={:session=>Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', :start_object=>#<Event>, :node=>nil, :rel=>nil, :caller=>#<Event>}, @node_var=nil, @rel_var=:rel0, @session=Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', @caller=#<Event>, @chain=[], @starting_query=nil, @optional=nil, @params={}> 
2.2.0 :062 > e2.event_questions << q3
 CYPHER 3ms MATCH (start:`Event`), (end:`EventQuestion`) WHERE ID(start) = {start_id} AND ID(end) = {end_id} CREATE start<-[rel0:`questions_of`]-end | {:start_id=>24, :end_id=>27}
 => #<Neo4j::ActiveNode::Query::QueryProxy:0x007fc05e300108 @model=EventQuestion, @association=#<Neo4j::ActiveNode::HasN::Association:0x007fc05e170590 @type=:has_many, @name=:event_questions, @direction=:in, @target_class_name_from_name="EventQuestion", @target_class_option="::EventQuestion", @callbacks={:before=>nil, :after=>nil}, @origin=nil, @relationship_class=nil, @relationship_type=:questions_of, @dependent=:destroy, @unique=nil, @target_class_name="::EventQuestion", @target_class_name_or_nil="::EventQuestion">, @context="Event#event_questions", @options={:session=>Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', :start_object=>#<Event>, :node=>nil, :rel=>nil, :caller=>#<Event>}, @node_var=nil, @rel_var=:rel0, @session=Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', @caller=#<Event>, @chain=[], @starting_query=nil, @optional=nil, @params={}> 
2.2.0 :063 > q1.event_answers << a1
 CYPHER 3ms MATCH (start:`EventQuestion`), (end:`EventAnswer`) WHERE ID(start) = {start_id} AND ID(end) = {end_id} CREATE start<-[rel0:`answers_of`]-end | {:start_id=>25, :end_id=>28}
 => #<Neo4j::ActiveNode::Query::QueryProxy:0x007fc05e350c20 @model=EventAnswer, @association=#<Neo4j::ActiveNode::HasN::Association:0x007fc05bc4f2c0 @type=:has_many, @name=:event_answers, @direction=:in, @target_class_name_from_name="EventAnswer", @target_class_option="::EventAnswer", @callbacks={:before=>nil, :after=>nil}, @origin=nil, @relationship_class=nil, @relationship_type=:answers_of, @dependent=:destroy, @unique=nil, @target_class_name="::EventAnswer", @target_class_name_or_nil="::EventAnswer">, @context="EventQuestion#event_answers", @options={:session=>Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', :start_object=>#<EventQuestion>, :node=>nil, :rel=>nil, :caller=>#<EventQuestion>}, @node_var=nil, @rel_var=:rel0, @session=Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', @caller=#<EventQuestion>, @chain=[], @starting_query=nil, @optional=nil, @params={}> 
2.2.0 :064 > q2.event_answers << a2
 CYPHER 4ms MATCH (start:`EventQuestion`), (end:`EventAnswer`) WHERE ID(start) = {start_id} AND ID(end) = {end_id} CREATE start<-[rel0:`answers_of`]-end | {:start_id=>26, :end_id=>29}
 => #<Neo4j::ActiveNode::Query::QueryProxy:0x007fc05e4003a0 @model=EventAnswer, @association=#<Neo4j::ActiveNode::HasN::Association:0x007fc05bc4f2c0 @type=:has_many, @name=:event_answers, @direction=:in, @target_class_name_from_name="EventAnswer", @target_class_option="::EventAnswer", @callbacks={:before=>nil, :after=>nil}, @origin=nil, @relationship_class=nil, @relationship_type=:answers_of, @dependent=:destroy, @unique=nil, @target_class_name="::EventAnswer", @target_class_name_or_nil="::EventAnswer">, @context="EventQuestion#event_answers", @options={:session=>Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', :start_object=>#<EventQuestion>, :node=>nil, :rel=>nil, :caller=>#<EventQuestion>}, @node_var=nil, @rel_var=:rel0, @session=Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', @caller=#<EventQuestion>, @chain=[], @starting_query=nil, @optional=nil, @params={}> 
2.2.0 :065 > q3.event_answers << a3
 CYPHER 4ms MATCH (start:`EventQuestion`), (end:`EventAnswer`) WHERE ID(start) = {start_id} AND ID(end) = {end_id} CREATE start<-[rel0:`answers_of`]-end | {:start_id=>27, :end_id=>30}
 => #<Neo4j::ActiveNode::Query::QueryProxy:0x007fc05e4c1708 @model=EventAnswer, @association=#<Neo4j::ActiveNode::HasN::Association:0x007fc05bc4f2c0 @type=:has_many, @name=:event_answers, @direction=:in, @target_class_name_from_name="EventAnswer", @target_class_option="::EventAnswer", @callbacks={:before=>nil, :after=>nil}, @origin=nil, @relationship_class=nil, @relationship_type=:answers_of, @dependent=:destroy, @unique=nil, @target_class_name="::EventAnswer", @target_class_name_or_nil="::EventAnswer">, @context="EventQuestion#event_answers", @options={:session=>Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', :start_object=>#<EventQuestion>, :node=>nil, :rel=>nil, :caller=>#<EventQuestion>}, @node_var=nil, @rel_var=:rel0, @session=Neo4j::Server::CypherSession url: 'http://localhost:7474/db/data/' version: '2.2.0-M01', @caller=#<EventQuestion>, @chain=[], @starting_query=nil, @optional=nil, @params={}> 
2.2.0 :066 > 
2.2.0 :067 >   Event.count
 CYPHER 4ms MATCH (n:`Event`) RETURN count(n) AS count
 => 2 
2.2.0 :068 > EventQuestion.count
 CYPHER 3ms MATCH (n:`EventQuestion`) RETURN count(n) AS count
 => 3 
2.2.0 :069 > EventAnswer.count
 CYPHER 3ms MATCH (n:`EventAnswer`) RETURN count(n) AS count
 => 3 
2.2.0 :070 > 
2.2.0 :071 >   e1.destroy
 Event#event_questions 31ms MATCH (event23:`Event`), (result_event_questions:`EventQuestion`), event23<-[rel0:`questions_of`]-(result_event_questions:`EventQuestion`) WHERE ID(event23) = {ID_event23} RETURN result_event_questions | {:ID_event23=>23}
 EventQuestion#event_answers 29ms MATCH (eventquestion26:`EventQuestion`), (result_event_answers:`EventAnswer`), eventquestion26<-[rel0:`answers_of`]-(result_event_answers:`EventAnswer`) WHERE ID(eventquestion26) = {ID_eventquestion26} RETURN result_event_answers | {:ID_eventquestion26=>26}
 EventQuestion#event_answers 31ms MATCH (eventquestion25:`EventQuestion`), (result_event_answers:`EventAnswer`), eventquestion25<-[rel0:`answers_of`]-(result_event_answers:`EventAnswer`) WHERE ID(eventquestion25) = {ID_eventquestion25} RETURN result_event_answers | {:ID_eventquestion25=>25}
 => true 
2.2.0 :072 > EventQuestion.count
 CYPHER 4ms MATCH (n:`EventQuestion`) RETURN count(n) AS count
 => 1 
2.2.0 :073 > EventAnswer.count
 CYPHER 3ms MATCH (n:`EventAnswer`) RETURN count(n) AS count
 => 1 
2.2.0 :074 > 
2.2.0 :075 >   e2.destroy
 Event#event_questions 31ms MATCH (event24:`Event`), (result_event_questions:`EventQuestion`), event24<-[rel0:`questions_of`]-(result_event_questions:`EventQuestion`) WHERE ID(event24) = {ID_event24} RETURN result_event_questions | {:ID_event24=>24}
 EventQuestion#event_answers 29ms MATCH (eventquestion27:`EventQuestion`), (result_event_answers:`EventAnswer`), eventquestion27<-[rel0:`answers_of`]-(result_event_answers:`EventAnswer`) WHERE ID(eventquestion27) = {ID_eventquestion27} RETURN result_event_answers | {:ID_eventquestion27=>27}
 => true 
2.2.0 :076 > EventQuestion.count
 CYPHER 3ms MATCH (n:`EventQuestion`) RETURN count(n) AS count
 => 0 
2.2.0 :077 > EventAnswer.count
 CYPHER 3ms MATCH (n:`EventAnswer`) RETURN count(n) AS count
 => 0 
2.2.0 :078 >
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