Rails, find table where match another table

Question

How to find table values with matching id with other table.
I have this tables:

Zombie_users      Body_status                             

| id | name |     | id| Zombie_id| body_id | status|   
|----|------| --> |---|----------|---------|-------|
| 1  | Joe  |     | 1 |    1     |     2   | true  |   



Zobmie_users      Tools                   Body_impacts

| id | name |    | id |user_id| name |    | id| tool_id| body_id | impact |
|----|------|--> |----|-------|------|--> |---|--------|---------|--------|
| 1  | Joe  |    | 1  |   1   |hammer|    | 1 |    1   |    2    |   10%  |

I need to find all the user -> tools that have user --> Body_status = false .
I mean if we have Body_impact -> body_id -> 2 and Body_status -> body_id -> 2 that also have status = true exclude that tool from the list

samething like that:

@Body_status = @zombie.Body_status.where( Body_status: { :status=> false } )

@tools = @zombie.tools.includes(:Body_impacts).where( @Body_status.body_id } )

I know that's not working code, but it perfectly explains the logic of the desired action.

update

My models:

class ZombieUser < ActiveRecord::Base
 has_many :body_statuses
 has_many :bodies, through: :body_statuses
 has_many :tools

class BodyStatus < ActiveRecord::Base
  belongs_to :zombie_users
  belongs_to :bodies

class Tool < ActiveRecord::Base
  belongs_to :zombie_users
  has_many :body_impacts
  has_many :bodies, :through => :body_impacts

  accepts_nested_attributes_for :body_impacts, 

class BodysImpact < ActiveRecord::Base
 belongs_to :tools
 belongs_to :bodies

Answer 1

You could clean up some of those calls with ActiveRecord association extensions :

#app/models/zombie.rb
class Zombie < ActiveRecord::Base
   has_many :body_statuses do
      def false
         where status: false
      end
   end
end

This will allow you to call:

@zombie = Zombie.find 1
@statuses = @zombie.body_statuses.false

---

I mean if we have Body_impact -> body_id -> 2 and Body_status -> body_id -> 2 that also have status = true exclude that tool from the list

I think you could build a query like this:

@zombie = Zombie.find 1
@statuses = @zombie.body_statuses.false.pluck(:body_id) #-> array of IDs with "false" status

@user.tools.joins(:body_impacts).where('body_impacts.body_id IN (?)', @statuses)
## or
@user.tools.joins(:body_impacts).find_by(id: @statuses)