ref: dockerize
plugins/video/views/box_organizer/video_plugin/_video_block.html.erb
<%= text_field_tag 'block[url]', @block.url, :class => 'video-url', :maxlength => 255 %><%= text_field_tag 'block[width]', @block.width, :size => 7, :class => 'video-width', :maxlength => 5 %> <%= text_field_tag 'block[height]', @block.height, :size => 7, :class => 'video-height', :maxlength => 5 %>