CODEWITHSUNDEEP
ruby-on-rails-4activerecordassociations
Alex Zakruzhetskyi
Alex Zakruzhetskyi

Reputation: 1433

Undefined method for ActiveRecord_Associations_CollectionProxy

I have several models, which are connected to each other:

class InsurerPayment < ActiveRecord::Base
  belongs_to :insurer
  belongs_to :company
  has_many :contracts
end

class Insurer < ActiveRecord::Base
  belongs_to :company
  has_many :contracts
  has_many :insurer_payments, dependent: :destroy
end

class Contract < ActiveRecord::Base
  belongs_to :company
  belongs_to :insurer
  belongs_to :insurer_payment
end

When I do commissions = current_company.contracts.pluck(:commission).sum in my insurer_payments_controller, I get the sum of commission for all the contract related to my current company. But I need to get the sum of commission that belongs to insurers of my current company. Doing something like commissions = current_company.insurers.contracts.pluck(:commission).sum gives me an error: undefined method `contracts' for # Insurer::ActiveRecord_Associations_CollectionProxy:0x007f92450f79c0. How can I get the result I need? Thanks ahead.

Upvotes: 0

Views: 1182

Answers (1)

Kaushlendra Tomar
Kaushlendra Tomar

Reputation: 1440

You can try this:

current_company.insurers.map { |ins| ins.contracts.pluck(:commission).sum}

You are getting this type of error because when you hit current_company.insurers is return an array, and you hit contracts on this array this is incorrect.

Upvotes: 1

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