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Use arel for building the STI type condition

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Pratik Naik
2010-01-01 23:15:48 +05:30
parent 7789663a7d
commit d200d08004
1 changed files with 7 additions and 7 deletions
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14
activerecord/lib/active_record/base.rb
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@@ -1681,14 +1681,14 @@ module ActiveRecord #:nodoc:
o.is_a?(Array) && o.all?{|obj| obj.is_a?(String)}
end
def type_condition(table_alias=nil)
quoted_table_alias = self.connection.quote_table_name(table_alias || table_name)
quoted_inheritance_column = connection.quote_column_name(inheritance_column)
type_condition = subclasses.inject("#{quoted_table_alias}.#{quoted_inheritance_column} = '#{sti_name}' " ) do |condition, subclass|
condition << "OR #{quoted_table_alias}.#{quoted_inheritance_column} = '#{subclass.sti_name}' "
end
def type_condition(table_alias = nil)
table = Arel::Table.new(table_name, :engine => engine, :as => table_alias)
" (#{type_condition}) "
sti_column = table[inheritance_column]
condition = sti_column.eq(sti_name)
subclasses.each{|subclass| condition = condition.or(sti_column.eq(subclass.sti_name)) }
condition.to_sql
end
# Guesses the table name, but does not decorate it with prefix and suffix information.