Ticket #9532: formsets_min_num.diff

django/forms/formsets.py

@@ -59 +59 @@
                 self._total_form_count = self.extra
             if self._total_form_count > self.max_num and self.max_num > 0:
                 self._total_form_count = self.max_num
+            if self._total_form_count < self.min_num:
+                self._total_form_count = self.min_num
             initial = {TOTAL_FORM_COUNT: self._total_form_count,
                        INITIAL_FORM_COUNT: self._initial_form_count}
             self.management_form = ManagementForm(initial=initial, auto_id=self.auto_id, prefix=self.prefix)
@@ -273 +275 @@
         return mark_safe(u'\n'.join([unicode(self.management_form), forms]))
 
 def formset_factory(form, formset=BaseFormSet, extra=1, can_order=False,
-                    can_delete=False, max_num=0):
+                    can_delete=False, max_num=0, min_num=0):
     """Return a FormSet for the given form class."""
     attrs = {'form': form, 'extra': extra,
              'can_order': can_order, 'can_delete': can_delete,
-             'max_num': max_num}
+             'max_num': max_num, 'min_num': min_num}
     return type(form.__name__ + 'FormSet', (formset,), attrs)
 
 def all_valid(formsets):

django/forms/models.py

@@ -437 +437 @@
 def modelformset_factory(model, form=ModelForm, formfield_callback=lambda f: f.formfield(),
                          formset=BaseModelFormSet,
                          extra=1, can_delete=False, can_order=False,
-                         max_num=0, fields=None, exclude=None):
+                         max_num=0, min_num=0, fields=None, exclude=None):
     """
     Returns a FormSet class for the given Django model class.
     """
     form = modelform_factory(model, form=form, fields=fields, exclude=exclude,
                              formfield_callback=formfield_callback)
     FormSet = formset_factory(form, formset, extra=extra, max_num=max_num,
-                              can_order=can_order, can_delete=can_delete)
+                              min_num=min_num, can_order=can_order, 
+                              can_delete=can_delete)
     FormSet.model = model
     return FormSet
 
@@ -538 +539 @@
                           formset=BaseInlineFormSet, fk_name=None,
                           fields=None, exclude=None,
                           extra=3, can_order=False, can_delete=True, max_num=0,
-                          formfield_callback=lambda f: f.formfield()):
+                          min_num=0, formfield_callback=lambda f: f.formfield()):
     """
     Returns an ``InlineFormSet`` for the given kwargs.
 
@@ -566 +567 @@
         'fields': fields,
         'exclude': exclude,
         'max_num': max_num,
+        'min_num': min_num,
     }
     FormSet = modelformset_factory(model, **kwargs)
     FormSet.fk = fk