title: wordpress custom fields: structured data table
body: <p>I know how to make custom fields for my custom post types. But I need a pretty complex custom field this time.
  I'm making a website about agricultural machinery. There are a lot of types of machines. For every type of machine there are some products available with properties like size, mass, diameter, capacity, ....</p>
  
  <p>Per type there is only one description, one title and one image needed. So my custom post-type <em>machine</em> contains posts (custom type = machines) with the basic information. For every machine I would like to sum up all the different size - mass - capacity - prize information in a table. I know I could just create a html table in the description, but I would really like the data to be structured so I can nicely style it, and eventually even do structured searches for price and stuff.</p>
  
  <p>So ideally I would like to have a custom field that looks a bit like an excel sheet where I can create some columns and add rows per available product in the category. Any ideas how I can do this?</p>
  
  <p>EDIT: I'm trying out the Types wordpress plugin <a href="http://wordpress.org/extend/plugins/types/" rel="nofollow">http://wordpress.org/extend/plugins/types/</a>. There's an option to group custom fields together and also an option to allow multiple instances of one field. Would be useful for me if there would be a possibility to allow multiple instances of a group. Does something like that exist?</p>
  
  <p>EDIT: This looks promising. <a href="http://wp-types.com/documentation/user-guides/bulk-content-editing-with-fields-table/" rel="nofollow">http://wp-types.com/documentation/user-guides/bulk-content-editing-with-fields-table/</a>
  I will look into it and maybe answer myself if it turns out to work :)</p>