Add the ability to edit announcements

app/controllers/announcement_controller.rb

@@ -23,6 +23,12 @@ class AnnouncementController < ApplicationController
   end
 
   def update
+    if Announcement.update(params[:id], announcement_params)
+      flash[:success] = "Announcement updated successfully."
+      redirect_to announcement_index_path
+    else
+      render 'announcement/edit'
+    end
   end
 
   def destroy

app/views/announcement/edit.html.haml

@@ -1,2 +1,19 @@
-<h1>Announcement#edit</h1>
-<p>Find me in app/views/announcement/edit.html.erb</p>
+- provide(:title, generate_title("Edit announcement"))
+.container.j2-page
+  = bootstrap_form_for(@announcement, url: {action: "update"}, method: "PATCH") do |f|
+    .row
+      .col-md-12
+        = f.text_area :content, label: "Content"
+    .row
+      .col-md-6
+        = f.url_field :link_href, label: "Link URL"
+      .col-md-6
+        = f.datetime_field :link_text, label: "Link text"
+    .row
+      .col-md-6
+        = f.datetime_field :starts_at, label: "Start time"
+      .col-md-6
+        = f.datetime_field :ends_at, label: "End time"
+    .row
+      .col-md-12.text-right
+        = f.submit class: "btn btn-primary"

app/views/announcement/index.html.haml

@@ -10,5 +10,5 @@
       .panel-body
         = announcement.content
       .panel-footer
-        = button_to "Edit", announcement_edit_path(id: announcement.id), class: 'btn btn-link'
+        = button_to "Edit", announcement_edit_path(id: announcement.id), method: :get, class: 'btn btn-link'
         = button_to "Delete", announcement_destroy_path(id: announcement.id), method: :delete, class: 'btn btn-link', confirm: 'Are you sure you want to delete this announcement?'