Homies and money moves

app/models/concerns/json_response.rb

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+module Response
+  def json_response(object, status = :ok)
+    render json: object, status: status
+  end
+end

app/models/homie.rb

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+class Homie < ApplicationRecord
+  has_many :money_moves_from, class_name: 'MoneyMove', column: :from_homie_id
+  has_many :money_moves_to, class_name: 'MoneyMove', column: :to_homie_id
+end

app/models/money_move.rb

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+class MoneyMove < ApplicationRecord
+  belongs_to :from_homie, class_name: 'Homie'
+  belongs_to :to_homie, class_name: 'Homie'
+end