diff options
Diffstat (limited to 'activerecord/lib/active_record')
-rw-r--r-- | activerecord/lib/active_record/relation/query_methods.rb | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 88fc47fada..14470f22aa 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -120,6 +120,9 @@ module ActiveRecord # Will throw an error, but this will work: # # User.includes(:posts).where('posts.name = ?', 'example').references(:posts) + # + # Note that +includes+ works with association names while +references+ needs + # the actual table name. def includes(*args) check_if_method_has_arguments!(:includes, args) spawn.includes!(*args) @@ -163,24 +166,26 @@ module ActiveRecord self end - # Used to indicate that an association is referenced by an SQL string, and should - # therefore be JOINed in any query rather than loaded separately. + # Use to indicate that the given +table_names+ are referenced by an SQL string, + # and should therefore be JOINed in any query rather than loaded separately. + # This method only works in conjuction with +includes+. + # See #includes for more details. # # User.includes(:posts).where("posts.name = 'foo'") # # => Doesn't JOIN the posts table, resulting in an error. # # User.includes(:posts).where("posts.name = 'foo'").references(:posts) # # => Query now knows the string references posts, so adds a JOIN - def references(*args) - check_if_method_has_arguments!(:references, args) - spawn.references!(*args) + def references(*table_names) + check_if_method_has_arguments!(:references, table_names) + spawn.references!(*table_names) end - def references!(*args) # :nodoc: - args.flatten! - args.map!(&:to_s) + def references!(*table_names) # :nodoc: + table_names.flatten! + table_names.map!(&:to_s) - self.references_values |= args + self.references_values |= table_names self end |