Backup database tables in a pre defined order.

Signed-off-by: Yorick Peterse <yorickpeterse@gmail.com>

task/backup.rake

@@ -1,23 +1,50 @@
 namespace :db do
+  table_order = [
+    :settings,
+    :user_statuses,
+    :users,
+    :user_groups,
+    :user_groups_users,
+    :permissions,
+    :sections,
+    :section_entry_statuses,
+    :section_entries,
+    :comment_statuses,
+    :comments,
+    :category_groups,
+    :categories,
+    :category_groups_sections,
+    :custom_field_methods,
+    :custom_field_types,
+    :custom_field_groups,
+    :custom_fields,
+    :custom_field_values,
+    :custom_field_groups_sections,
+    :menus,
+    :menu_items,
+  ]
+
   desc 'Creates a database independent backup'
   task :export do
+    data = {}
 
-    Zen.database.tables.each do |table|
-      handle = File.open(
-        File.expand_path('../../tmp/%s' % table, __FILE__),
-        'w'
-      )
-
-      handle.write(Marshal.dump([table, Zen.database[table].all]))
-      handle.close
+    table_order.each do |table|
+      data[table] = Zen.database[table].all
     end
+
+    handle = File.open(File.expand_path('../../tmp/backup', __FILE__), 'w')
+
+    handle.write(Marshal.dump(data))
+    handle.close
   end
 
   desc 'Imports a database backup'
   task :import, :backup do |task, args|
-    table, rows = Marshal.load(File.open(args[:backup], 'r').read)
+    data = Marshal.load(File.open(args[:backup], 'r').read)
 
-    Zen.database[table].delete
-    Zen.database[table].insert_multiple(rows)
+    table_order.each do |table|
+      Zen.database[table].delete
+      Zen.database[table].insert_multiple(data[table])
+    end
   end
 end