Visibility and Authorization

View Source

You can control whether a filter is visible or not by implementing the can?/1 callback in your filter module.

Configuration

The can?/1 callback receives the assigns and has to return a boolean value. If the callback returns true, the filter will be visible. If it returns false, the filter will be hidden. If you don't implement the can?/1 callback, the filter will be visible by default.

Here is an example of how to hide a filter based on the user's role:

defmodule MyAppWeb.Filters.MyFilter do
  use BackpexWeb, :filter

  @impl Backpex.Filter
  def can?(assigns), do: assigns.current_user.role == :admin
end

In this example, the MyFilter filter will only be visible if the user's role is admin.