Class: Effective::Cart

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/effective/cart.rb

Instance Method Summary collapse

Instance Method Details

#add(item, quantity: 1, unique: true) ⇒ Object

cart.add(@product, unique: -> (a, b) { a.kind_of?(Product) && b.kind_of?(Product) && a.category == b.category }) cart.add(@product, unique: :category) cart.add(@product, unique: false) # Add as many as you want



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# File 'app/models/effective/cart.rb', line 20

def add(item, quantity: 1, unique: true)
  raise 'expecting an acts_as_purchasable object' unless item.kind_of?(ActsAsPurchasable)

  existing = (
    if unique.kind_of?(Proc)
      cart_items.find { |cart_item| instance_exec(item, cart_item.purchasable, &unique) }
    elsif unique.kind_of?(Symbol) || (unique.kind_of?(String) && unique != 'true')
      raise "expected item to respond to unique #{unique}" unless item.respond_to?(unique)
      cart_items.find { |cart_item| cart_item.purchasable.respond_to?(unique) && item.send(unique) == cart_item.purchasable.send(unique) }
    elsif unique.present?
      find(item)
    end
  )

  if existing
    if unique || (existing.unique.present?)
      existing.assign_attributes(purchasable: item, quantity: quantity, unique: existing.unique)
    else
      existing.quantity = existing.quantity + quantity
    end
  end

  if item.quantity_enabled? && (existing ? existing.quantity : quantity) > item.quantity_remaining
    raise EffectiveOrders::SoldOutException, "#{item.title} is sold out"
  end

  existing ||= cart_items.build(purchasable: item, quantity: quantity, unique: (unique.to_s if unique.kind_of?(Symbol) || unique.kind_of?(String) || unique == true))
  save!
end

#blank? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/effective/cart.rb', line 80

def blank?
  size <= 0
end

#clear! ⇒ Object 



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# File 'app/models/effective/cart.rb', line 50

def clear!
  cart_items.each { |cart_item| cart_item.mark_for_destruction }
  save!
end

#find(item) ⇒ Object 



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# File 'app/models/effective/cart.rb', line 64

def find(item)
  cart_items.find { |cart_item| cart_item == item || cart_item.purchasable == item }
end

#includes?(item) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/effective/cart.rb', line 60

def includes?(item)
  find(item).present?
end

#present? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/effective/cart.rb', line 76

def present?
  size > 0
end

#purchasables ⇒ Object 



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# File 'app/models/effective/cart.rb', line 68

def purchasables
  cart_items.map { |cart_item| cart_item.purchasable }
end

#remove(item) ⇒ Object 



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# File 'app/models/effective/cart.rb', line 55

def remove(item)
  find(item).try(:mark_for_destruction)
  save!
end

#size ⇒ Object 



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# File 'app/models/effective/cart.rb', line 72

def size
  cart_items_count || cart_items.length
end

#subtotal ⇒ Object 



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# File 'app/models/effective/cart.rb', line 84

def subtotal
  cart_items.map { |ci| ci.subtotal }.sum
end