lib/baza/driver/pg/columns.rb
class Baza::Driver::Pg::Columns
def initialize(args)
@db = args.fetch(:db)
end
DATA_SQL_ALLOWED_KEYS = %i[foreign_key type maxlength name primarykey autoincr default comment after first storage null renames].freeze
def data_sql(data)
data.each_key do |key|
raise "Invalid key: '#{key}' (#{key.class.name})." unless DATA_SQL_ALLOWED_KEYS.include?(key)
end
maxlength = data[:maxlength]
raise "No type given." unless data[:type]
type = data[:type].to_sym
type = :timestamp if type == :datetime
if type == :int && data[:autoincr]
type = :serial
maxlength = nil
end
if type == :int
type = :integer
maxlength = nil
end
if type == :tinyint
type = :smallint
maxlength = nil
end
data[:maxlength] = 255 if type == :varchar && !data.key?(:maxlength)
sql = "#{@db.quote_column(data.fetch(:name))} #{type}"
sql << "(#{maxlength})" if maxlength
sql << " PRIMARY KEY" if data[:primarykey]
sql << " NOT NULL" if data.key?(:null) && !data[:null]
if data.key?(:default_func)
sql << " DEFAULT #{data[:default_func]}"
elsif data.key?(:default) && data[:default]
sql << " DEFAULT #{@db.quote_value(data.fetch(:default))}"
end
sql << " COMMENT #{@db.quote_value(data.fetch(:comment))}" if data.key?(:comment)
sql << " AFTER #{@db.quote_column(data.fetch(:after))}" if data[:after] && !data[:first]
sql << " FIRST" if data[:first]
sql << " STORAGE #{data[:storage].to_s.upcase}" if data[:storage]
sql
end
end