I attempted to try your suggestion and it didn’t change anything except create a red “we can’t find the internet” prompt at the top of the page.
This is a gist of the entire LiveView page:
Here is step by step how I attempted to follow your instructions:
- In your
mount/3 callback I would set your default sort field and direction:
This is the code I changed/used
def mount(_params, _session, socket) do
TestBeds.subscribe()
Alerts.subscribe()
{:ok,
assign(socket,
testbeds: TestBeds.list_testbeds(),
sort_direction: false, # Here
sort_field: :name, # Here
alerts: Alerts.list_alerts(),
developer: "None",
name_warning: ""
)}
end
-
def handle_event(“sort_by_string”, %{“field” => field}, socket) do
I would update the `sort_direction` and `sort_field` assigns, and use them to sort your list:
This is the code I changed/used
def sort_by(socket, field) do
atomParam = String.to_existing_atom(field)
if socket.assigns[:sort_direction] == false do
sorted_testbeds = Enum.sort_by(socket.assigns.testbeds, fn item -> Map.get(item, atomParam) end)
{:noreply, assign(socket, testbeds: sorted_testbeds, sort_direction: true, sort_field: atomParam)}
else
sorted_testbeds = Enum.sort_by(socket.assigns.testbeds, fn item -> Map.get(item, atomParam) end)
|> Enum.reverse()
{:noreply, assign(socket, testbeds: sorted_testbeds, sort_direction: false, sort_field: atomParam)}
end
end
def handle_event("sort_by_string", %{"field" => field}, socket) do
sort_by(socket, field)
end
- Inside of your
handle_info/2 callback you would sort the new list in the same way, getting the sort field & direction from the assigns
This is the code I changed/used
def handle_info({TestBeds, [:testbed | _], _}, socket) do
testbeds = Enum.sort_by(socket.assigns.testbeds, fn item -> Map.get(item, socket.assigns.sort_field) end, socket.assigns.sort_direction)
{:noreply, assign(socket, testbeds: testbeds)}
end
I get this error:
[error] GenServer #PID<0.2240.0> terminating
** (UndefinedFunctionError) function false.compare/2 is undefined (module false is not available)
false.compare("Bill", "SAC")
(elixir 1.17.3) lib/list.ex:511: anonymous fn/4 in List.keysort_fun/2
(stdlib 5.2.3.1) lists.erl:1210: :lists.sort/2
(elixir 1.17.3) lib/enum.ex:3349: Enum.sort_by/3
(app 0.1.0) lib/app_web/live/page_live.ex:75: AppWeb.PageLive.handle_info/2
(phoenix_live_view 0.18.18) lib/phoenix_live_view/channel.ex:276: Phoenix.LiveView.Channel.handle_info/2
(stdlib 5.2.3.1) gen_server.erl:1095: :gen_server.try_handle_info/3
(stdlib 5.2.3.1) gen_server.erl:1183: :gen_server.handle_msg/6
(stdlib 5.2.3.1) proc_lib.erl:251: :proc_lib.wake_up/3
