switch to core question type labels instead of defining our own strings

src/pretix/base/datasync/sourcefields.py

@@ -529,19 +529,3 @@ def get_enum_opts(q):
         return [(opt.identifier, opt.answer) for opt in q.options.all()]
     else:
         return None
-
-
-QUESTION_TYPE_IDENTIFIERS = {
-    Question.TYPE_NUMBER: "NUMBER",
-    Question.TYPE_STRING: "STRING",
-    Question.TYPE_TEXT: "TEXT",
-    Question.TYPE_BOOLEAN: "BOOLEAN",
-    Question.TYPE_CHOICE: "CHOICE",
-    Question.TYPE_CHOICE_MULTIPLE: "CHOICE_MULTIPLE",
-    Question.TYPE_FILE: "FILE",
-    Question.TYPE_DATE: "DATE",
-    Question.TYPE_TIME: "TIME",
-    Question.TYPE_DATETIME: "DATETIME",
-    Question.TYPE_COUNTRYCODE: "COUNTRYCODE",
-    Question.TYPE_PHONENUMBER: "PHONENUMBER",
-}

src/pretix/control/forms/mapping.py

@@ -25,7 +25,7 @@ from django import forms
 from django.forms import formset_factory
 from django.utils.translation import gettext_lazy as _
 
-from pretix.base.datasync.sourcefields import QUESTION_TYPE_IDENTIFIERS
+from pretix.base.models import Question
 from pretix.base.models.datasync import (
     MODE_APPEND_LIST, MODE_OVERWRITE, MODE_SET_IF_EMPTY, MODE_SET_IF_NEW,
 )
@@ -118,7 +118,7 @@ class PropertyMappingFormSet(formset_factory(
 
 def pretix_fields_choices(pretix_fields, initial_choice):
     return [
-        (f.key, f.label + " [" + QUESTION_TYPE_IDENTIFIERS[f.type] + "]")
+        (f.key, f.label + " [" + Question.TYPE_CHOICES[f.type] + "]")
         for f in pretix_fields
         if not f.deprecated or f.key == initial_choice
     ]