List also variables added by template_on_formdata

wcs/workflows.py

@@ -42,6 +42,13 @@ def lax_int(s):
         return -1
 
 
+ADDITIONAL_VARIABLES = (
+        ('url', _('URL of the form')),
+        ('url_status', _('URL of the form status')),
+        ('details', _('Full details of the form')),
+        ('name', _('Form type')),
+        ('number', _('Form number')))
+
 def get_varnames(fields):
     '''Extract variable names for helping people fill their templates.
 
@@ -59,6 +66,7 @@ def get_varnames(fields):
             varnames.append(('f%s' % field.id, label))
 
         # and finally add it as its manually defined variable name
+    varnames.extend(ADDITIONAL_VARIABLES)
     return varnames