Method: ActiveRecord::QueryMethods#extract_associated

Defined in:
lib/active_record/relation/query_methods.rb

#extract_associated(association) ⇒ Object

Extracts a named association from the relation. The named association is first preloaded, then the individual association records are collected from the relation. Like so:

.memberships.extract_associated(:user)
# => Returns collection of User records

This is short-hand for:

.memberships.preload(:user).collect(&:user)



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# File 'lib/active_record/relation/query_methods.rb', line 341

def extract_associated(association)
  preload(association).collect(&association)
end