absinthe v1.2.0-rc.0 Absinthe.Resolution.Helpers

Handy functions for returning async or batched resolution functions

It is automatically imported into all modules using Absinthe.Schema.Notation or (by extension) Absinthe.Schema.

Summary

Functions

async(fun, opts \\ [])

Execute resolution field asynchronously

batch(batch_fun, batch_data, post_batch_fun, opts \\ [])

Batch the resolution of several functions together

Functions

async(fun, opts \\ [])

async((() -> term), Keyword.t) :: {:plugin, Absinthe.Resolution.Plugin.Async, term}

Execute resolution field asynchronously.

This is a helper function for using the Absinthe.Resolution.Plugin.Async.

Forbidden in mutation fields. (TODO: actually enforce this)

batch(batch_fun, batch_data, post_batch_fun, opts \\ [])

batch(Absinthe.Resolution.Plugin.Batch.batch_fun, term, Absinthe.Resolution.Plugin.Batch.post_batch_fun, opts :: Keyword.t) :: {:plugin, Absinthe.Resolution.Plugin.Batch, term}

Batch the resolution of several functions together.

Helper function for creating Absinthe.Resolution.Plugin.Batch

Example

Raw usage:

object :post do
  field :title, :string
  field :body, :string
  field :author, :user do
    resolve fn post, _, _ ->
      batch({EctoBatch, :by_id}, {User, post.author_id}, fn batch_results ->
        {:ok, batch_results[User][post.author_id]}
      end)
    end
  end
end
field
resolve fn post, _, _
batch({EctoBatch, :by_id}, [])