Handling duplicate key (and other errors) on insert

[Justin Heyes-Jones]

Sorry if I missed this in the documentation, but I'm having trouble figuring out how to handle a duplicate key error when returned from a monger insert.

          (let [result (monger-collection/insert user-collection-name new-user)]

            (if (monger-result/has-error? result)

              (cheshire/generate-string {:error "Something went wrong"})

              (cheshire/generate-string new-user)))

          (catch Throwable t

            (error-response t)))))

Initially I thought the has-error? function would do the trick but an exception is thrown instead. In catching that I seem to get the raw response of the mongodb as the Throwable's message, so I started to decode and parse that, but is there some way I could do that with monger's API? 

Ultimately I want to just grab the error code and return that to the client.

Justin

[Michael Klishin]

2014/1/25 Justin Heyes-Jones <just...@gmail.com>

Initially I thought the has-error? function would do the trick but an exception is thrown instead. In catching that I seem to get the raw response of the mongodb as the Throwable's message, so I started to decode and parse that, but is there some way I could do that with monger's API? 

Ultimately I want to just grab the error code and return that to the client.

There is nothing that returns error code but it may be a good addition to
https://github.com/michaelklishin/monger/blob/master/src/clojure/monger/result.clj

--
MK

http://github.com/michaelklishin
http://twitter.com/michaelklishin

[Justin Heyes-Jones]

Ah I see, that helps.

Initially I'm going to just catch MongoException and return the result of getCode. It seems it would fit into the API somewhere like you suggest.

Justin

[Michael Klishin]

2014-01-27 Justin Heyes-Jones <just...@gmail.com>

Initially I'm going to just catch MongoException and return the result of getCode. It seems it would fit into the API somewhere like you suggest.

Sure. Once you feel confident that your approach works well, feel free to submit

a pull request to Monger.