title: populating Django model field with databse field data
body: <p>I have three tables in a MySQL DB. Two of the tables are pre-populated.
  The 3rd table will be filled with data I enter via a Django Form. What
  I want to do is populate the station_id and sku_id selections in the
  labunits_uut table (via a form) with data from the labunits_resources
  and labunits_sku tables - specifically the 'name' field in those tables.</p>
  
  <p>Here are the table defines:</p>
  
  <pre><code>CREATE TABLE `labunits_resources` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `name` varchar(20) DEFAULT NULL, 
      # what I want to populate the station_id form field with
      `type` varchar(50) DEFAULT NULL,
      `cm` varchar(4) DEFAULT NULL,
      `state` varchar(20) DEFAULT NULL,
      PRIMARY KEY (`id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
  
  CREATE TABLE `labunits_sku` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `name` varchar(20) DEFAULT NULL, 
      # what I want to populate the sku_id form field with
      PRIMARY KEY (`id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
  
  CREATE TABLE `labunits_uut` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `cm_serial` varchar(20) DEFAULT NULL,
      `rvbd_serial` varchar(20) DEFAULT NULL,
      `station_id` int(11) DEFAULT NULL, 
      `sku_id` int(11) DEFAULT NULL,
      `state` varchar(20) DEFAULT NULL,
      `location` varchar(20) DEFAULT NULL,
      PRIMARY KEY (`id`),
      KEY `station_id` (`station_id`),
      KEY `sku_id` (`sku_id`),
      CONSTRAINT `uut_ibfk_1` FOREIGN KEY (`station_id`) REFERENCES  
      `labunits_resources` (`id`),
      CONSTRAINT `uut_ibfk_2` FOREIGN KEY (`sku_id`) REFERENCES `labunits_sku`  
      (`id`)
      ) ENGINE=InnoDB DEFAULT CHARSET=latin1;
  </code></pre>