Declares the query params of controller actions, so that the generated route helpers type their query option.

defmodule MyAppWeb.TaskController do
  use MyAppWeb, :controller
  use Typelizer.Query

  query :index,
    page: {:optional, :integer},
    status: {:optional, {:enum, [:todo, :doing, :done]}},
    tags: {:optional, {:list, :string}}

  def index(conn, params), do: ...
end

routes.task.index({ query: { page: 2, status: "todo" } }); // ok
routes.task.index({ query: { stauts: "todo" } });          // compile error

Query keys stay as written (snake_case), because Phoenix reads them as written. Only types are generated: the controller still casts and validates params. Actions without a declaration keep Record<string, unknown>.

A LiveView module can declare the query params of its live actions the same way.

See the Route helpers guide.