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ash_json_api

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The JSON:API extension for the Ash Framework.

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ash_json_api lib ash_json_api controllers patch_relationship.ex
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lib/ash_json_api/controllers/patch_relationship.ex 

defmodule AshJsonApi.Controllers.PatchRelationship do

  @moduledoc false

  alias AshJsonApi.Controllers.{Helpers, Response}

  alias AshJsonApi.Request



  def init(options) do

    # initialize options

    options

  end



  def call(conn, options) do

    action =

      options[:action] || Ash.Resource.Info.primary_action!(options[:resource], :update)



    domain = options[:domain]

    route = options[:route]

    all_domains = options[:all_domains]



    argument =

      action.arguments

      |> Enum.find(fn argument ->

        argument.name == options[:relationship]

      end)



    relationship =

      Enum.find_value(action.changes, fn

        %{change: {Ash.Resource.Change.ManageRelationship, opts}} ->

          opts[:argument] == argument.name && opts[:relationship] &&

            Ash.Resource.Info.relationship(options[:resource], opts[:relationship])



        _ ->

          nil

      end)



    if !relationship do

      raise "Resource #{inspect(options[:resource])} must have a `change manage_relationship` with relationship #{options[:relationship]} for route #{inspect(options[:route])}"

    end



    if !argument do

      raise "Action #{action.name} must have an argument #{options[:relationship]} for route #{inspect(options[:route])}"

    end



    conn

    |> Request.from(options[:resource], action, domain, all_domains, route, options[:prefix])

    |> Helpers.update_record(&Helpers.resource_identifiers(&1, argument))

    |> Helpers.fetch_metadata()

    |> Helpers.render_or_render_errors(conn, fn conn, request ->

      Response.render_many_relationship(conn, request, 200, relationship)

    end)

  end

end