I have some models and I want to generate a multi-selection form from this data.
So the form would contain an entry for each category and the choices would be the skills in that category.
models.py
class SkillCategory(models.Model):
name = models.CharField(max_length=50)
class Skill(models.Model):
name = models.CharField(max_length=50)
category = models.ForeignKey(SkillCategory)
Is there a way to auto-generate the form fields?
I know I can manually add a 'SkillCategory' entry in the form for each SkillCategory, but the reason to have it as a model is so skills and skillcategories can be edited freely.
I want to do something like this:
(I tried this, but didn't get it to work, don't remember the exact error...)
forms.py
class SkillSelectionForm(forms.Form):
def __init__(*args, **kwargs):
super(SkillSelectionForm, self).__init__(*args, **kwargs)
for c in SkillCategory.objects.all():
category_skills = [(pk, s.name) for s in c.skill_set.all()]
setattr(self, c.name, forms.MultipleChoiceField(choices=category_skills, widget=forms.CheckboxSelectMultiple))
SOLUTION
This creates a form field entry using the SkillCategory.name and assigns choices as those in Skill. field_name/display_name are used to avoid issues with non-ascii category names.
forms.py
def get_categorized_skills():
skills = {}
for s in Skill.objects.values('pk', 'name', 'category__name').order_by('category__name'):
if s['category__name'] not in skills.keys():
skills[s['category__name']] = []
skills[s['category__name']].append((s['pk'], s['name']))
return skills
class SkillSelectionForm(forms.Form):
def __init__(self, *args, **kwargs):
super(SkillSelectionForm, self).__init__(*args, **kwargs)
skills = get_categorized_skills()
for idx, cat in enumerate(skills.keys()):
field_name = u'category-{0}'.format(idx)
display_name = cat
self.fields[field_name] = forms.MultipleChoiceField(choices=skills[cat], widget=forms.CheckboxSelectMultiple, label=display_name)
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