Parameters:

{"utf8"=>"✓",
 "authenticity_token"=>"Y6DMNXV0oq3oejtw4gImTAgTdHGaaAmpMOUKdIfYS/g=",
 "user"=>
  {"researches_attributes"=>
    {"0"=>
      {"title"=>"Research is good",
       "_destroy"=>"false",
       "details"=>"this talks needlessly about the research i have not done",
       "id"=>"4e646f10932ecf39c6000019"},
     "1"=>
      {"title"=>"No Good",
       "_destroy"=>"1",
       "details"=>"Just testing",
       "id"=>"4e646f67932ecf39c600001f"},
     "1315206464381"=>
      {"title"=>"asdf", "_destroy"=>"false", "details"=>"asdfasdf"}}},
 "commit"=>"Save Changes",
 "section"=>"professional"}


Mongid Log(update command)

MONGODB alma_connect['users'].update({"_id"=>BSON::ObjectId('4db02a09932ecf57aa000012')}, {"$pullAll"=>{"researches"=>[{"title"=>"No Good", "details"=>"Just testing", "_id"=>BSON::ObjectId('4e646f67932ecf39c600001f')}]}, "$set"=>{"profile_completeness"=>56.81818181818182}, "$pushAll"=>{"researches"=>[{"title"=>"asdf", "details"=>"asdfasdf", "_id"=>BSON::ObjectId('4e647552932ecf39c60000e2')}]}})



Mongodb log(verbose mode, log exception)

Mon Sep  5 12:38:02 [conn2] User Assertion: 10150:Field name duplication not allowed with modifiers
Mon Sep  5 12:38:02 [conn2] update alma_connect.users  query: { _id: ObjectId('4db02a09932ecf57aa000012') } exception 10150 Field name duplication not allowed with modifiers 0ms