mongo db and rails id issue

Question

I'm working with a js framework called spine. The framework can do all crud operations through REST api(like backbone). When I get a create request to my controller, I get a model data that has an id field from client side, I know that I'm in a create request so I should create a new record but mongo think this record already exists(because of the id field) and invokes update instead of insert. Is there a way to solve this issue? I want client side to create this temporal id's but when calls server side create this id should be ignored.

some code:

#in my_controller
def create
  @model= Model.new(params[:modelData]) #model data is name=>"x", _id=>"c-0"
  @model.save

when save is called mongo do update, so next create will override this record.

do you use client generated id as '_id' in mongodb? – kofemann Apr 29 '12 at 19:10 — kofemann, Apr 29 '12 at 19:10
I don't know what's client generated id – Chen Kinnrot Apr 29 '12 at 19:33 — Chen Kinnrot, Apr 29 '12 at 19:33
Can you post some code to demonstrate the problem? – Brian Hempel Apr 30 '12 at 15:02 — Brian Hempel, Apr 30 '12 at 15:02

score 0 · Answer 1 · answered May 01 '12 at 22:12

0

I'm not quite sure I understand your question, but I think you want this:

@model = Model.find_or_initialize_by_id(params[:modelData][:_id])
@model.update_attributes(params[:modelData])

answered May 01 '12 at 22:12

Brian Hempel

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score 0 · Accepted Answer · answered Jul 24 '12 at 20:56

0

I had no choice but deleting the id field from the model I got from the client.

answered Jul 24 '12 at 20:56

Chen Kinnrot

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mongo db and rails id issue

2 Answers2