correct compound table custom columns parameters parsing

Former-commit-id: 7b9f4b81ac29826e63a67db04192e2d7e01eacaa

ippisite/ippidb/views.py

@@ -219,7 +219,7 @@ def compound_list(request):
         display = 'v'
     compound_fields = {f.name: f.verbose_name for f in Compound._meta.get_fields() if not(f.is_relation)}
     sort_by_options = {sort_by_option: compound_fields[sort_by_option] for sort_by_option in sort_by_options}
-    fields = request.GET.get('fields',['id', 'common_name', 'molecular_weight', 'a_log_p', 'compound_action_pdb_ids', 'biblio_refs'])    
+    fields = request.GET.getlist('fields',['id', 'common_name', 'molecular_weight', 'a_log_p', 'compound_action_pdb_ids', 'biblio_refs'])    
     return render(request, 'compound_list.html', {'compounds': compounds,
                                                   'count': count,
                                                   'selected_ppis': selected_ppis,