54 lines
1 KiB
Ruby
54 lines
1 KiB
Ruby
class Stock
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include ActiveModel::Model
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include ActiveModel::Validations
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def stock_entries
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@stockentries ||= []
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end
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def stock_entries_attributes=(attributes)
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attributes.each do |i, se_attr|
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stock_entries.push(StockEntry.new(se_attr))
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end
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end
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def update
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return false unless valid?
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stock_entries.each do |se|
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se.product.increment!(:stock, se.count.to_i) if se.count.to_i > 0
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end
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end
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def valid?
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super && stock_entries.map(&:valid?).all?
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end
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class StockEntry
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include ActiveModel::Model
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include ActiveModel::Validations
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validates :count, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
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validates :product, presence: true
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def initialize(attributes={})
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super
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@count ||= 0
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end
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attr_accessor :product, :count
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def self.products
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@products ||= Product.all.to_a
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end
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def product_id
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@product.id
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end
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def product_id=(id)
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@product = StockEntry.products.select { |p| p.id == id.to_i }.first
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end
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end
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end
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