Behaviour for filter type implementations.

Implement this behaviour to create custom filter inputs and query logic.

Example

defmodule MyApp.FilterTypes.DateRange do
  @behaviour MishkaGervaz.Table.Behaviours.FilterType
  use Phoenix.Component
  import Ash.Expr

  @impl true
  def render_input(filter, value, ui) do
    assigns = %{filter: filter, value: value || %{}, ui: ui}
    ~H"""
    <div class="flex gap-2">
      {@ui.date_input(%{name: "#{@filter.name}_from", value: @value[:from]})}
      <span class="self-center">to</span>
      {@ui.date_input(%{name: "#{@filter.name}_to", value: @value[:to]})}
    </div>
    """
  end

  @impl true
  def parse_value(%{"from" => from, "to" => to}, _filter) do
    %{from: Date.from_iso8601!(from), to: Date.from_iso8601!(to)}
  end
  def parse_value(_, _), do: nil

  @impl true
  def build_query(query, field, %{from: from, to: to}) do
    query
    |> Ash.Query.filter(^ref(field) >= ^from)
    |> Ash.Query.filter(^ref(field) <= ^to)
  end
end

Then use in DSL:

filter :created_at, type: MyApp.FilterTypes.DateRange

See MishkaGervaz.Table.Types.Filter (registry), MishkaGervaz.Table.Entities.Filter, MishkaGervaz.Table.Behaviours.TypeRegistry, and the form-side counterpart MishkaGervaz.Form.Behaviours.FieldType.