I have to tables in my Rails app which are linked by a ActiveRecord::Relation like so.
# Table name: lease_rents
# id :bigint not null, primary key
class LeaseRent < ApplicationRecord
has_many :lease_tenant_payments,
...
end
class LeaseTenantPayment < ApplicationRecord
belongs_to :lease_rent
...
end
each LeaseRent can have 0 or multiple LeaseTenantPayment.
in my Rails console i am trying to get only the LeaseRent witch have at least one or more LeaseTenantPayment.
to do so i have been able to get the number of LeaseTenantPayment linked to a specific LeaseRent
LeaseRent.all.where('id = 1').first.lease_tenant_payments.count
I want to get an ActiveRecord::Relation array whitch contain each LeaseRent witch have at least 1 or more LeaseTenantPayment. something like this:
#<ActiveRecord::Relation [#<LeaseRent id: ...>,<LeaseRent id: ...>,<LeaseRent id: ...>,...]>
Does anyone have some idea of how to get it?
Use a join, it would only return rows with lease_tenant_payments.
LeaseRent.joins(:lease_tenant_payments)
If you want to use them in a loop, you may need to also use includes
LeaseRent.joins(:lease_tenant_payments).includes(:lease_tenant_payments)
finaly got my solutions !
there are serval way to do it.
solution 1 :
LeaseRent.joins(:lease_tenant_payments).includes(:lease_tenant_payments)
solution 2 :
LeaseRent.joins(:lease_tenant_payments).distinct
solution 3 (my favorite cause it allow to revert it very easily juste by removing the '.not' ) :
LeaseRent.includes(:lease_tenant_payments).where.not(lease_tenant_payments: { id: nil })
i am using that way :
scope "Aucun Paiement", :all, group: :unpayed do |rents|
rents.includes(:lease_tenant_payments).where(lease_tenant_payments: { id: nil })
end
scope "Reliquat", :all, group: :unpayed do |rents|
rents.includes(:lease_tenant_payments).where.not(lease_tenant_payments: { id: nil })
end