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phoenix_kit
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1.0.0
A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
Current section
Files
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Files
lib/phoenix_kit_web/users/confirmation.ex
defmodule PhoenixKitWeb.Users.Confirmation do
@moduledoc """
LiveView for email confirmation.
Handles the email confirmation flow after a user clicks the confirmation link
from their registration email. Validates the confirmation token and confirms
the user account.
"""
use PhoenixKitWeb, :live_view
require Logger
alias PhoenixKit.Users.Auth
alias PhoenixKit.Users.Invitations
alias PhoenixKit.Utils.Routes
def mount(%{"token" => token} = params, session, socket) do
socket = assign(socket, :page_title, gettext("Confirm your account"))
form = to_form(%{"token" => token}, as: "user")
# Same destination rule as the parked /users/confirm page, so the tab that
# clicks the emailed link and a tab parked waiting for confirmation don't
# land in two different places. `?return_to=` is read as well as the
# session key because a LiveView gate can only pass the destination in the
# query string — it has no conn to `put_session` on.
#
# `:context` threads the socket's router into the resolver so that `"/"` —
# the host's home page that core cannot declare — is only used where the
# host proves it exists. Without it the resolver synthesises `"/"` literally,
# which 404s on any host that never declared a root route.
destination =
Routes.post_auth_path([params["return_to"], session["user_return_to"]],
context: socket,
scope: socket.assigns[:phoenix_kit_current_scope]
)
{:ok, assign(socket, form: form, destination: destination), temporary_assigns: [form: nil]}
end
# Do not log in the user after confirmation to avoid a
# leaked token giving the user access to the account.
def handle_event("confirm_account", %{"user" => %{"token" => token}}, socket) do
destination = socket.assigns.destination
case Auth.confirm_user(token) do
{:ok, user} ->
maybe_accept_pending_invitation(user)
{:noreply,
socket
|> put_flash(:info, gettext("User confirmed successfully."))
|> redirect(to: destination)}
:error ->
# If there is a current user and the account was already confirmed,
# then odds are that the confirmation link was already visited, either
# by some automation or by the user themselves, so we redirect without
# a warning message.
case socket.assigns do
%{phoenix_kit_current_user: %{confirmed_at: confirmed_at}}
when not is_nil(confirmed_at) ->
{:noreply, redirect(socket, to: destination)}
%{} ->
{:noreply,
socket
|> put_flash(
:error,
gettext("User confirmation link is invalid or it has expired.")
)
|> redirect(
to:
Routes.safe_destination(socket,
scope: socket.assigns[:phoenix_kit_current_scope]
)
)}
end
end
end
# Auto-accept a pending invitation stored in custom_fields during registration.
# The invitation UUID is placed there by the registration flow when user
# arrives via an invite link (?invitation=TOKEN).
defp maybe_accept_pending_invitation(user) do
uuid = user.custom_fields && user.custom_fields["pending_invitation_uuid"]
if uuid do
case Invitations.accept_invitation_by_uuid(uuid, user) do
{:ok, _} ->
Auth.update_user_fields(user, %{"pending_invitation_uuid" => nil})
{:error, reason} ->
Logger.warning(
"Failed to auto-accept invitation for user #{user.uuid}: #{inspect(reason)}"
)
end
end
end
end