Add (somewhat hacky) support for text blocks in QuestionsForms

src/pretix/api/serializers/item.py

@@ -54,6 +54,7 @@ from pretix.base.models import (
     SalesChannel,
 )
 from pretix.base.models.items import Questionnaire, QuestionnaireChild
+from pretix.base.templatetags.rich_text import rich_text
 
 
 class InlineItemVariationSerializer(SalesChannelMigrationMixin, I18nAwareModelSerializer):
@@ -651,13 +652,19 @@ class QuestionRefField(serializers.PrimaryKeyRelatedField):
         return self.source == '*'
 
 
+class RenderedMarkdownField(serializers.CharField):
+    def to_representation(self, value):
+        return rich_text(value)
+
+
 class InlineQuestionnaireChildSerializer(I18nAwareModelSerializer):
     question = QuestionRefField(source='*', queryset=Question.objects.none())
     dependency_question = QuestionRefField(allow_null=True, required=False, queryset=Question.objects.none())
+    rendered_help_text = RenderedMarkdownField(read_only=True, source='help_text')
 
     class Meta:
         model = QuestionnaireChild
-        fields = ('question', 'required', 'label', 'help_text', 'dependency_question', 'dependency_values')
+        fields = ('question', 'required', 'label', 'help_text', 'dependency_question', 'dependency_values', 'rendered_help_text')
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)

src/pretix/base/forms/questions.py

@@ -50,6 +50,7 @@ from django.core.exceptions import ValidationError
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.db.models import QuerySet
+from django.db import ProgrammingError
 from django.forms import Select, widgets
 from django.forms.widgets import FILE_INPUT_CONTRADICTION
 from django.utils.formats import date_format
@@ -869,6 +870,8 @@ class BaseQuestionsForm(forms.Form):
                 initial=initial,
                 widget=WrappedPhoneNumberPrefixWidget()
             )
+        else:
+            raise ProgrammingError('Invalid question type')
         field.datafield = datafield
         if answers:
             # Cache the answer object for later use
@@ -884,6 +887,15 @@ class BaseQuestionsForm(forms.Form):
 
         return field
 
+    def build_text_block(self, request, event, qc):
+        return forms.CharField(  # TODO(questionnaires): use a less hacky way to format this field
+            required=False,
+            label="",
+            help_text=rich_text((f"#### {qc.label}\n" if qc.label else "") + str(qc.help_text)),
+            disabled=True,
+            widget=QuestionCheckboxSelectMultiple,
+        )
+
     def check_user_questions(self, d):
         question_cache = {f.question.pk: f.question for f in self.fields.values() if getattr(f, 'question', None)}
 
@@ -990,6 +1002,7 @@ class TicketLevelQuestionsForm(BaseQuestionsForm):
         if cartpos and item.validity_mode == Item.VALIDITY_MODE_DYNAMIC and item.validity_dynamic_start_choice:
             self.fields['requested_valid_from'] = self.build_requested_valid_from_field(event, pos, item)
 
+        idx = 0
         for questionnaire in questionnaires:
             for child in getattr(questionnaire, 'childlist', questionnaire.children.all()):
                 if child.user_datafield:
@@ -997,6 +1010,9 @@ class TicketLevelQuestionsForm(BaseQuestionsForm):
                     self.fields['question_%s' % df.id] = self.build_user_question_field(request, event, pos.answerlist, child, df)
                 elif child.system_datafield:
                     self.fields[child.system_datafield] = self.build_system_question_field(request, event, pos, child)
+                else:
+                    self.fields['text_%d' % idx] = self.build_text_block(request, event, child)
+                    idx += 1
 
         responses = question_form_fields.send(sender=event, position=pos)
         data = pos.meta_info_data