handle items with poorly formatted b params, and mmoved to single objective function

app/helpers/service_helper.py

@@ -13,20 +13,22 @@ def items_csv_to_dict(items_csv_reader, irt_model):
     else:
       item = { 'attributes': [] }
 
-      for key, col in enumerate(headers):
-        if key == 0:
-          item[col] = row[key]
-        # b param - tmep fix! use irt model b param for proper reference
-        elif key == (1 - len(headers)):
-          item['b_param'] = row[key]
-        elif key > 1:
-          item['attributes'].append({
-            'id': col,
-            'value': row[key],
-            'type': 'metadata'
-          })
+      # ensure that the b param is formatted correctly
+      if len(re.findall(".", row[len(headers) - 1])) >= 3:
+        for key, col in enumerate(headers):
+          if key == 0:
+            item[col] = row[key]
+          # b param - tmep fix! use irt model b param for proper reference
+          elif key == len(headers) - 1:
+            item['b_param'] = row[key]
+          elif key > 1 and key < len(headers) - 1:
+            item['attributes'].append({
+              'id': col,
+              'value': row[key],
+              'type': 'metadata'
+            })
 
-      items.append(item)
+        items.append(item)
 
   return items