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Changes between Initial Version and Version 1 of Ticket #31295

-              initial
+              v1
 ModelChoiceField use ModelChoiceIterator for its {{{ queryset }}}/{{{ self.choices }}}, which use {{{.iterator()}}} and doesn't cache the query under some conditions.
+ModelChoiceField use ModelChoiceIterator for its {{{queryset}}}/{{{self.choices}}}, which use {{{.iterator()}}} and doesn't cache the query under some conditions.
 If the field is required, the method use_required_attribute (https://github.com/django/django/blob/master/django/forms/widgets.py#L689) fetch the first choice, making a duplicate query to the database (worse than a useless query, the data may have changed):
 …
 One solution would be to add another test to the previous piece of code :
-(https://github.com/django/django/blob/da79ee472d803963dc3ea81ee67767dc06068aac/django/forms/models.py#L1152) :
 {{{#!python
         if not queryset._prefetch_related_lookups and not self.field.required: