adds new show page with name for communities

Author: elixirprogrammer

lib/reddit/category.ex

@@ -101,4 +101,9 @@ defmodule Reddit.Category do
   def change_community(%Community{} = community, attrs \\ %{}) do
     Community.changeset(community, attrs)
   end
+
+
+  def get_name(param) do
+    Repo.get_by(Community, name: param)
+  end
 end

lib/reddit_web/controllers/community_controller.ex

@@ -26,9 +26,14 @@ defmodule RedditWeb.CommunityController do
     end
   end
 
-  def show(conn, %{"id" => id}) do
-    community = Category.get_community!(id)
-    render(conn, "show.html", community: community)
+  def show(conn, %{"name" => name}) do
+    community = Category.get_name(name)
+
+    if community do
+      render(conn, "show.html", community: community)
+    else
+      redirect(conn, to: "/")
+    end
   end
 
   def edit(conn, %{"id" => id}) do

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

@@ -18,7 +18,7 @@
       <td><%= community.rules %></td>
 
       <td>
-        <span><%= link "Show", to: Routes.community_path(@conn, :show, community) %></span>
+        <span><%= link "Show", to: Routes.community_path(@conn, :show, community.name) %></span>
         <span><%= link "Edit", to: Routes.community_path(@conn, :edit, community) %></span>
         <span><%= link "Delete", to: Routes.community_path(@conn, :delete, community), method: :delete, data: [confirm: "Are you sure?"] %></span>
       </td>