hackersleepyhead
I am trying to build a normal CRUD application using Phoenix.LiveView, Here I am facing an issue in passing or setting a Value is ASSIGN or IN SOCKET.
I have a LiveView code
Index.ex
defmodule Example.Index do
use Phoenix.LiveView
@default_state %{
is_editing?: false,
user_id: nil,
}
def render(assign) do
ExampleWeb.render("index.html", assign)
end
def mount(_params, _session, socket) do
users = Example.get_users()
{:ok, assign(socket, %{@default_state | users: users})}
end
def handle_event("edit-user", %{"user-id" => user_id}, socket) do
new_socket =
socket
|> assign(:user_id, user_id)
{:noreply,
live_redirect(new_socket,
to: ExampleWeb.Router.Helpers.users_edit_path(new_socket, __MODULE__, user_id),
replace: false
)}
end
end
Template file
<div class="card">
<%= if @is_editing? do %>
<%= live_component(@socket, ExampleWeb.Users.EditFormComponent, id: :edit_user) %>
<%= end %>
<%= if @is_editing? != true do %>
<div class="card-header">
<strong>Users</strong>
<a class="btn btn-sm btn-success ml-3 pull-right" phx-click="new">
<i class="fa fa-plus mr-1"></i> Create
</a>
</div>
<%= end %>
</div
here is my component.ex code
defmodule ExampleWeb.Users.EditFormComponent do
use Phoenix.LiveComponent
def render(assigns) do
UserView.render("update.html", assigns)
end
def mount(socket) do
{:ok, assign(socket, changeset: User.changeset(%User{}))}
end
end
the problem is here I am not able to get the user-id which is set/update in LiveView file and also not able to access the PARAMS component level.
Can somebody suggest or provide a solution for this??
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sfusato
You’re not passing the
user_idto your component:hackersleepyhead
actually, the problem was with the page Refresh, it was keep updating the assigns to default.
benwilson512
You also may need to make use of
updatePhoenix.LiveComponent — Phoenix LiveView v1.2.5 to actually assign the passed in value to the live component.What do you mean?
hackersleepyhead
I have tried, using update and preload as well, but still, the value inside the assigns is nil, this happens after the page refresh.
What I am trying to achieve is:
LiveView -
list of users
EditUserComponent - I set the user-id in assigns
When the view changes - to edit user for the first time I get user-id this is fine, but when I refresh the page on this componentView the user-id becomes nil.
I want the user-id in LiveComponent always - bcoz based on the user-id I fetch the user details to pre-populate values.
I think this issue occurs bcoz of URL change -
USER list - /users
EDIT. - /users/1/edit
this might be the problem, I don’t know how to handle this.
benwilson512
can you show more complete code for both views and the component?