Deduplicate push checking

lib/capistrano-db-tasks/dbtasks.rb

@@ -10,12 +10,17 @@
 set :skip_data_sync_confirm, (ENV['SKIP_DATA_SYNC_CONFIRM'].to_s.downcase == 'true')
 set :disallow_pushing, false unless fetch(:disallow_pushing)
 
+namespace :capistrano_db_tasks do
+  task :check_can_push do
+    raise "pushing is disabled, set disallow_pushing to false to carry out this operation" if fetch(:disallow_pushing)
+  end
+end
+
 namespace :db do
   namespace :remote do
     desc 'Synchronize your remote database using local database data'
-    task :sync do
+    task :sync => 'capistrano_db_tasks:check_can_push' do
       on roles(:db) do
-        raise "pushing is disabled, set disallow_pushing to false to carry out this operation" if fetch(:disallow_pushing)
         if fetch(:skip_data_sync_confirm) || Util.prompt('Are you sure you want to REPLACE THE REMOTE DATABASE with local database')
           Database.local_to_remote(self)
         end
@@ -45,10 +50,9 @@
 namespace :assets do
   namespace :remote do
     desc 'Synchronize your remote assets using local assets'
-    task :sync do
+    task :sync => 'capistrano_db_tasks:check_can_push' do
       on roles(:app) do
         puts "Assets directories: #{fetch(:assets_dir)}"
-        raise "pushing is disabled, set disallow_pushing to false to carry out this operation" if fetch(:disallow_pushing)
         if fetch(:skip_data_sync_confirm) || Util.prompt("Are you sure you want to erase your server assets with local assets")
           Asset.local_to_remote(self)
         end
@@ -78,8 +82,7 @@
 namespace :app do
   namespace :remote do
     desc 'Synchronize your remote assets AND database using local assets and database'
-    task :sync do
-      raise "pushing is disabled, set disallow_pushing to false to carry out this operation" if fetch(:disallow_pushing)
+    task :sync => 'capistrano_db_tasks:check_can_push' do
       if fetch(:skip_data_sync_confirm) || Util.prompt("Are you sure you want to REPLACE THE REMOTE DATABASE AND your remote assets with local database and assets(#{fetch(:assets_dir)})")
         on roles(:db) do
           Database.local_to_remote(self)