ruby on rails - Use ActiveRecord to Find Result of 5 Nested Tables -


I have a user model (: name, password, email:), and event model (: name,: etc.) and Interest Model (: Name)

Then I added two tables -> User feedback and Events; Not every primary key is included and only include user_id / interest_id event_id / interest_id respectively

I'm trying to use ActiveRecord to query a list of all events where interest.id = interest of EventsInterests

look like my model =>

user.rb

pre> has_many: users_interests has_many: interests, via = & gt; : Users_interests

event.rb

has_many: events_interests has_many: interest, through = & gt; : Events_interests

interest.rb 

  related_to: users ,: through = & gt; : Users_interests belong_to: Events, via = & gt; : Events_interests

users_interests.rb 

  belongs_to: those are_to: interests

events_interests.rb 

  related_to: Interests related_images

If @username = user.fund (1), how do I query the event in which a user would be interested?

I came up with this => @ events. Address (: all :: circumstance => events.root.in_reference_user =). 

  undefined method `interest_id 'for user (user_id: integer, interest_id: integer): class

Umm..weight? People of any help .... I have been on this for 4 days

First of all Console and make sure all your relationships work: 

  User.first.events User.first.interests Events.first.users Interests.first.users Interests.first.events #. ..and therefore

Just to clarify, a user lists their interests, and you want to get the list of events that match those interests? 

  User.first Interest.collect {| Interest |

Especially not efficient, but effective and easy to understand.

You can use the User.first.interests_singular_ids to get the ID and search for interest_id IN (...) with that list Pass for; I'm not sure how fast it will be.


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