75 lines
3.5 KiB
Ruby
75 lines
3.5 KiB
Ruby
class RemoveTableArticlePrices < ActiveRecord::Migration[4.2]
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def self.up
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puts "create columns in articles ..."
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add_column "articles", "clear_price", :decimal, :precision => 8, :scale => 2, :default => 0.0, :null => false
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add_column "articles", "gross_price", :decimal, :precision => 8, :scale => 2, :default => 0.0, :null => false
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add_column "articles", "tax", :float
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add_column "articles", "refund", :decimal, :precision => 8, :scale => 2, :default => 0.0, :null => false
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add_column "articles", "unit_quantity", :integer, :default => 1, :null => false
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add_column "articles", "order_number", :string
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add_column "articles", "created_at", :datetime
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add_column "articles", "updated_at", :datetime
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# stop auto-updating the timestamps to make the data-copy safe!
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Article.record_timestamps = false
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puts "now copy values of article_prices into new articles-columns..."
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Article.find(:all).each do |article|
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price = article.current_price
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article.update_attributes!(:clear_price => price.clear_price,
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:gross_price => price.gross_price,
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:tax => price.tax,
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:refund => price.refund,
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:unit_quantity => price.unit_quantity,
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:order_number => price.order_number,
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:updated_at => price.updated_on,
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:created_at => price.updated_on)
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end
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puts "delete article_prices, current_price attribute"
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drop_table :article_prices
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remove_column :articles, :current_price_id
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end
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def self.down
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add_column :articles, :current_price_id, :integer
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create_table "article_prices", :force => true do |t|
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t.integer "article_id", :default => 0, :null => false
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t.decimal "clear_price", :precision => 8, :scale => 2, :default => 0.0, :null => false
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t.decimal "gross_price", :precision => 8, :scale => 2, :default => 0.0, :null => false
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t.float "tax", :default => 0.0, :null => false
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t.decimal "refund", :precision => 8, :scale => 2, :default => 0.0, :null => false
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t.datetime "updated_on"
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t.integer "unit_quantity", :default => 1, :null => false
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t.string "order_number"
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end
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# copy data from article now into old ArticlePrice-object
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Article.find(:all).each do |article|
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price = ArticlePrice.create(:clear_price => article.clear_price,
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:gross_price => article.gross_price,
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:tax => article.tax,
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:refund => article.refund,
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:unit_quantity => article.unit_quantity,
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:order_number => article.order_number.blank? ? nil : article.order_number,
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:updated_on => article.updated_at)
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article.update_attribute(:current_price, price)
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price.update_attribute(:article, article)
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end
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# remove new columns
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remove_column "articles", "clear_price"
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remove_column "articles", "gross_price"
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remove_column "articles", "tax"
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remove_column "articles", "refund"
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remove_column "articles", "unit_quantity"
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remove_column "articles", "order_number"
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remove_column "articles", "created_at"
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remove_column "articles", "updated_at"
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end
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end
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