adds live join community

Author: elixirprogrammer

lib/reddit_web/live/subscriptions_live.ex

@@ -1,35 +1,76 @@
 defmodule RedditWeb.SubscriptionsLive do
   use RedditWeb, :live_view
 
-  def mount(_params, %{"current_user" => user_id}, socket) do
-    socket =
+  alias Reddit.Community.Subscription
+  alias Reddit.Repo
+
+  import Ecto.Query, only: [where: 2]
+
+  def mount(_params, %{"current_user" => u_id, "community" => c_id}, socket) do
+    if Subscription |> where(user_id: ^u_id) |> where(community_id: ^c_id) |> Repo.all() !== [] do
+      socket =
+      assign(socket,
+      user: u_id,
+      community: c_id,
+      status: "Leave Community",
+      btn_status: "secondary",
+      disable_with: "Leaving...")
+
+      {:ok , socket}
+    else
+      socket =
       assign(socket,
-      user: user_id,
+      user: u_id,
+      community: c_id,
       status: "Join Community",
       btn_status: "success",
       disable_with: "Joining...")
 
-    {:ok , socket}
+      {:ok , socket}
+    end
   end
 
   def render(assigns) do
     ~L"""
-      <button class="btn btn-<%= @btn_status %> text-uppercase float-right" phx-click="toggle-status"
-    phx-disable-with=<%= @disable_with %>>
+      <button class="btn btn-<%= @btn_status %> text-uppercase float-right"
+              phx-value-user="<%= @user %>"
+              phx-value-community="<%= @community %>"
+              phx-click="toggle-status"
+              phx-disable-with=<%= @disable_with %>>
             <%= @status %>
      </button>
     """
   end
 
-  def handle_event("toggle-status", _, socket) do
-    socket =
+  def handle_event("toggle-status", %{"user" => u_id, "community" => c_id}, socket) do
+    if Subscription |> where(user_id: ^u_id) |> where(community_id: ^c_id) |> Repo.all() !== [] do
+      Subscription.delete_old_relationship(u_id, c_id)
+
+      socket =
+      assign(socket,
+      user: u_id,
+      community: c_id,
+      status: "Join Community",
+      btn_status: "success",
+      disable_with: "Joining...")
+
+      :timer.sleep(500)
+
+      {:noreply , socket}
+    else
+      Subscription.build_relationship(u_id, c_id)
+
+      socket =
       assign(socket,
+      user: u_id,
+      community: c_id,
       status: "Leave Community",
       btn_status: "secondary",
       disable_with: "Leaving...")
 
-    :timer.sleep(500)
+      :timer.sleep(500)
 
-    {:noreply, socket}
+      {:noreply , socket}
+    end
   end
 end

lib/reddit_web/templates/community/show.html.eex

@@ -4,7 +4,7 @@
   </div>
   <div class="col-sm-4">
     <%= if Pow.Plug.current_user(@conn) do %>
-      <%= live_render(@conn, RedditWeb.SubscriptionsLive, session: %{"current_user" => @current_user.id}) %>
+      <%= live_render(@conn, RedditWeb.SubscriptionsLive, session: %{"current_user" => @current_user.id, "community" => @community.id}) %>
     <% end %>
   </div>
 </div>