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build SQL AST nodes rather than generate strings

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This commit is contained in:
Aaron Patterson
2010-12-14 15:24:25 -08:00
committed by Vijay Dev
parent aa4d03fcfc
commit 2f0708e974
1 changed files with 8 additions and 10 deletions
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18
activerecord/lib/active_record/associations/through_association_scope.rb
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@@ -23,25 +23,23 @@ module ActiveRecord
# Build SQL conditions from attributes, qualified by table name.
def construct_conditions
table_name = @reflection.through_reflection.quoted_table_name
table = @reflection.through_reflection.klass.arel_table
conditions = construct_quoted_owner_attributes(@reflection.through_reflection).map do |attr, value|
"#{table_name}.#{attr} = #{value}"
table[attr].eq(value)
end
conditions << sql_conditions if sql_conditions
"(" + conditions.join(') AND (') + ")"
conditions << Arel.sql(sql_conditions) if sql_conditions
table.create_and(conditions)
end
# Associate attributes pointing to owner, quoted.
def construct_quoted_owner_attributes(reflection)
if as = reflection.options[:as]
{ "#{as}_id" => owner_quoted_id,
"#{as}_type" => reflection.klass.quote_value(
@owner.class.base_class.name.to_s,
reflection.klass.columns_hash["#{as}_type"]) }
{ "#{as}_id" => @owner.id,
"#{as}_type" => @owner.class.base_class.name }
elsif reflection.macro == :belongs_to
{ reflection.klass.primary_key => @owner.class.quote_value(@owner[reflection.primary_key_name]) }
{ reflection.klass.primary_key => @owner[reflection.primary_key_name] }
else
{ reflection.primary_key_name => owner_quoted_id }
{ reflection.primary_key_name => @owner.id }
end
end