Hi, I’m trying to add some custom scalars

via attach-scalar-transformers per the docs. I’m trying somethign like the following:

:scalars
 {:Date
  {:parse     :date-parse
   :serialize :date-serialize}

Are you following along with the example here: http://lacinia.readthedocs.io/en/latest/custom-scalars.html?

yes with the exception that my schema is in an EDN file, so trying to follow the guidance under Attaching Scalar Transformers

I assumed it would be similar to attaching resolvers

The api doc isn’t clearing it up either

> In the initial schema, use a keyword for the :parse and :serialize keys, then provide a corresponding value in transform-m.

here are a couple tests which use attach-scalar-transformers https://github.com/walmartlabs/lacinia/blob/master/test/com/walmartlabs/lacinia/util_test.clj#L37

https://github.com/walmartlabs/lacinia/blob/master/test/com/walmartlabs/lacinia/custom_scalars_test.clj#L371

I tried the same pattern

(-> (io/resource "edn/grant-infra-schema.edn")
      slurp
      edn/read-string
      (attach-resolvers {:resolve-persons res/resolve-persons
                         :resolve-person-field res/resolve-person-field
                         :resolve-create-person! res/resolve-create-person!})
      (attach-scalar-transformers {:date-parse types/parse-date
                                   :date-serialize types/serialize-date
                                   :uuid-parse types/parse-uuid
                                   :uuid-serialize types/serialize-uuid})
      schema/compile))

ah

great

will check those out

does types/parse-date return a spec conformer?

dammit

lol

thanks

sort of forgot to do that

I did it inline like the docs at first but forgot to do it in the standalone code

thanks for your help got it all working 🙂

I have another quick question. I’m creating a mutation, i’d like to create a ‘person’ Since I already have person defined as an object, I’d like to pass one an argument but something like this:

:mutations
{:createPerson {:type :person
:args {:arg {:type :person}}
:resolve :resolve-create-person!}}

:mutations
 {:createPerson {:type    :person
                 :args    {:arg {:type String}}
                 :resolve :resolve-create-person!}}

nvm, just discovered input objects