Update object identified by composite key with rails -

i have table components. each component have specific version describe above (there other attributes name, component_type_id, ...):

id | version_id

-----+------------

167 | 1

167 | 96

167 | 97

167 | 98

167 | 99

166 | 1

166 | 92

the attributes "id" , "version_id" composite primary key, , want edit object identifying composite pk.

if want update version 99 of component #167 =>

with rails when :

component.where(id: 167, version_id: 99).first.update({"component_type_id"=>"5", "name"=>"ccc"}) 

rails :

select  "components".* "components" "components"."id" = $1 , "components"."version_id" = $2  order "components"."id" asc limit 1  [["id", 167], ["version_id", 99]]  update "components" set "name" = $1, "updated_at" = $2 "components"."id" = 167  [["name", "ccc"], ["updated_at", "2016-04-19 08:05:09.049345"]] 

but want :

update "components" set "name" = $1, "updated_at" = $2 "components"."id" = 167 ,  version_id = 99 [["name", "ccc"], ["updated_at", "2016-04-19 08:05:09.049345"]] 

thanks me cheers

since these 1 record given id , version, try:

component.where(id: 167, version_id: 99).update_all(component_type_id: 5, name: "ccc") 

in way, rails not instance record, avoid problem.