PatrykosA
Hello,
I have a page with a button “Save” (#room-socket-save-changes) and a select (#room-socket-select) which contains id.
There’s a content of some files below.
router.ex
pipeline :api do
plug :accepts, ["json"]
end
scope "/api", MdbmsWeb, as: :api do
pipe_through :api
scope "/v1", Api.V1, as: :v1 do
resources "/room_sockets", Room_socketController, only: [:index, :show, :update]
end
end
room_socket
schema "room_sockets" do
field :name, :string
belongs_to :room, Mdbms.Room, foreign_key: :room_id
has_one :connection, Mdbms.Connection
timestamps()
end
room_socket_controller.ex
def update(conn, %{"id" => id, "name" => name, "room_id" => room_id}) do
room_socket_params = %{"name" => name, "room_id" => room_id}
room_socket = Repo.get!(Room_socket, id)
changeset = Room_socket.changeset(room_socket, room_socket_params)
case Repo.update(changeset) do
{:ok, post} ->
conn
|> put_flash(:info, "Post updated successfully.")
{:error, changeset} ->
# render(conn, "edit.html", post: post, changeset: changeset)
end
end
app.js
$('#room-socket-save-changes').on('click', function() {
var room_socket_id = $('#room-socket-select').val();
var name = $('#input-rs-name').val();
var room_id = $('#select-rs-locations').val()
$.ajax({
type: 'PUT',
url: '/api/v1/room_sockets/' + room_socket_id,
data: {
name: name,
room_id: room_id
},
dataType: "json",
success: function() {
alert("success!");
},
error: function() {
alert('error!');
}
});
});
When I click button “Save” I get alert “error!” and an error shows in my terminal:
[error] #PID<0.463.0> running MdbmsWeb.Endpoint (cowboy_protocol) terminated
Server: localhost:4000 (http)
Request: PUT /api/v1/room_sockets/1
** (exit) an exception was raised:
** (ArgumentError) flash not fetched, call fetch_flash/2
(phoenix) lib/phoenix/controller.ex:1236: Phoenix.Controller.get_flash/1
(phoenix) lib/phoenix/controller.ex:1218: Phoenix.Controller.put_flash/3
(mdbms) lib/mdbms_web/controllers/api/v1/room_socket_controller.ex:1: MdbmsWeb.Api.V1.Room_socketController.action/2
(mdbms) lib/mdbms_web/controllers/api/v1/room_socket_controller.ex:1: MdbmsWeb.Api.V1.Room_socketController.phoenix_controller_pipeline/2
(mdbms) lib/mdbms_web/endpoint.ex:1: MdbmsWeb.Endpoint.instrument/4
(phoenix) lib/phoenix/router.ex:278: Phoenix.Router.__call__/1
(mdbms) lib/mdbms_web/endpoint.ex:1: MdbmsWeb.Endpoint.plug_builder_call/2
(mdbms) lib/plug/debugger.ex:122: MdbmsWeb.Endpoint."call (overridable 3)"/2
(mdbms) lib/mdbms_web/endpoint.ex:1: MdbmsWeb.Endpoint.call/2
(plug) lib/plug/adapters/cowboy/handler.ex:16: Plug.Adapters.Cowboy.Handler.upgrade/4
(cowboy) /osA/Elixir/mdbms/deps/cowboy/src/cowboy_protocol.erl:442: :cowboy_protocol.execute/4
I’ve tried some solutions but the error still shows up. Do you have any idea where I make a mistake?
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sanswork
Try replacing
in your controller
with
PatrykosA
Thank you. It helped. The error disappeared and both fields are updated:
Unfortunately I still get an alert “error!” from my jQuery.ajax.
sanswork
Check out the network tab in your developer console to see whats happening with the request. It might just be that you need to change the text reply type to a json one as shown below. It’s probably on the jquery side though at that point.
text conn, “OK”
json conn, %{}
PatrykosA
You’re right. I’ve changed that and it works fine now. Thanks again!