tab/app/models/user.rb

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# == Schema Information
#
# Table name: users
#
# id :integer not null, primary key
# name :string
# balance :integer default(0), not null
# penning :boolean default(FALSE), not null
# created_at :datetime not null
# updated_at :datetime not null
#
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class User < ActiveRecord::Base
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include FriendlyId
friendly_id :name, use: :finders
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devise :timeoutable, :omniauthable, :omniauth_providers => [:zeuswpi]
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has_many :incoming_transactions,
class_name: 'Transaction', foreign_key: 'creditor_id'
has_many :outgoing_transactions,
class_name: 'Transaction', foreign_key: 'debtor_id'
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has_many :issued_transactions, as: :issuer, class_name: 'Transaction'
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validates :name, presence: true, uniqueness: true
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scope :humans, -> { where.not(id: self.zeus) }
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def transactions
Transaction.where("creditor_id = ? OR debtor_id = ?", id, id)
end
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def calculate_balance!
balance = incoming_transactions.sum(:amount) -
outgoing_transactions.sum(:amount)
self.update_attribute :balance, balance
end
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def self.from_omniauth(auth)
where(name: auth.uid).first_or_create do |user|
user.name = auth.uid
end
end
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def self.zeus
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find_or_create_by name: 'Zeus'
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end
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end