“Forms are static” – “No, they aren't”

Hi, I’m Markus Holtermann • Django Core Developer • CS MSc Student @m_holtermann • github.com/MarkusH • markusholtermann.eu

Forms are static

What does “static” even mean?

What about request dependent forms?

They are static too!

What are non-static forms then?

Why do you need them?

How does that work?

def modelform_factory(model, …): attrs = { ‘fields’: fields_for_model(model), ‘model’: model, } Meta = type(str('Meta'), (object,), attrs) class_attrs = {‘Meta’: Meta} class_name = model.__name__ + str('Form') return type( class_name, ModelForm, class_attrs )

Wait! Aren’t they still static?

type(name, bases, attrs) rocks!

django-dynamic-forms http://django-dynamic-forms.rtfd.org

Actions FormModel Name URLs Name FormFieldModel Options Label … … belongs to

@formmodel_action('Send to admins') def send_admins(form_model, form, request): # label → value mapped_data = form.get_mapped_data() # construct message message = render_to_string( 'dynamic_forms/email.txt', { 'form': form_model, 'data': mapped_data}) # send data via mail mail_admins( “New form submission”, message )

@dynamic_form_field class IntegerField(BaseDynamicFormField): cls = 'django.forms.EmailField' display_label = 'Email' class Meta: # attribute = [type, default, class] max_value = [int, None, forms.IntegerField] min_value = [int, None, forms.IntegerField]

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django-dynamic-forms http://django-dynamic-forms.rtfd.org

Thank You! @m_holtermann • github.com/MarkusH • markusholtermann.eu