Good day,
We have an inline formset where each instance of the form has a
ManyToManyField for selecting countries. Here is the code:
*# models*
*class Geographic_Scope_Region(models.Model):*
* # class name exception (underscore) because ManyToManyField assumes pk
is lower(Table_Name) + _id*
* geographic_scope_region_id = models.AutoField(primary_key=True)*
* issf_core = models.ForeignKey(Issf_Core)*
* REGION_NAME = (*
* ('Asia', 'Asia'),*
* ('Africa', 'Africa'),*
* ('Caribbean', 'Caribbean'),*
* ('Europe', 'Europe'),*
* ('Latin America', 'Latin America'),*
* ('North America', 'North America'),*
* ('Oceania', 'Oceania'),*
* ('Other', 'Other'),*
* )*
* region_name = models.CharField(choices=REGION_NAME, max_length=100)*
* region_name_other = models.CharField(max_length=100)*
* countries = models.ManyToManyField(Country,
db_table='geographic_scope_region_country', blank=True)*
* class Meta:*
* managed = False*
* db_table = 'geographic_scope_region'*
*# forms*
*class GeographicScopeRegionForm(ModelForm):*
* class Meta:*
* model = Geographic_Scope_Region*
* labels = {*
* 'region_name': 'Name of region',*
* 'region_name_other': 'Other region name',*
* 'countries': 'Select country(ies) (if applicable)',*
* }*
*GeographicScopeRegionInlineFormSet = inlineformset_factory(Issf_Core,
Geographic_Scope_Region, form=GeographicScopeRegionForm, extra=2)*
*# views*
*class GeographicScopeRegionUpdateView(UpdateView):*
* model = Issf_Core*
* form_class = GeographicScopeRegionInlineFormSet*
* success_url = '/'*
It works great and produces the following (simplified) output:
<https://lh3.googleusercontent.com/-CzxpKsbf0TA/U3ODe-r4ygI/AAAAAAAAAAg/EOTepTR0OSs/s1600/formset.png>
By changing the widget from the default SelectMultiple
to CheckboxSelectMultiple, the countries multi-select list becomes a set of
checkboxes, one for each of ~200 countries!
We're wondering if there's an easy way to instead use an inline formset for
the countries, so that each form instance is a Select widget for picking
one country?
Thanks in advance,
Randal
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