zf

zenflows testing
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only_one_subscription.ex (944B)

      1 defmodule Absinthe.Phase.Document.Validation.OnlyOneSubscription do
      2   @moduledoc false
      3 
      4   # Validates document to ensure that the only variables that are used in a
      5   # document are defined on the operation.
      6 
      7   alias Absinthe.{Blueprint, Phase}
      8 
      9   use Absinthe.Phase
     10   use Absinthe.Phase.Validation
     11 
     12   @doc """
     13   Run the validation.
     14   """
     15   @spec run(Blueprint.t(), Keyword.t()) :: Phase.result_t()
     16   def run(input, _options \\ []) do
     17     bp =
     18       Blueprint.update_current(input, fn
     19         %{type: :subscription} = op ->
     20           check_op(op)
     21 
     22         op ->
     23           op
     24       end)
     25 
     26     {:ok, bp}
     27   end
     28 
     29   defp check_op(%{selections: [_, _ | _]} = op) do
     30     error = %Phase.Error{
     31       phase: __MODULE__,
     32       message: "Only one field is permitted on the root object when subscribing",
     33       locations: [op.source_location]
     34     }
     35 
     36     op
     37     |> flag_invalid(:too_many_fields)
     38     |> put_error(error)
     39   end
     40 
     41   defp check_op(op), do: op
     42 end