django - Can I render model properties in a form which uses that model as a foreign key? -

given following models

class camp(models.model):     camp_id = models.autofield(primary_key=true)     name = models.charfield(max_length=45)     level_choices = (         ("junior", "junior"),         ("adventure", "adventure"),     )     level = models.charfield(choices=level_choices, max_length=9)     capacity_choices = [(i, i) in range(1, 101, 1)]     capacity = models.integerfield(choices=capacity_choices)     start_date = models.datefield()     end_date = models.datefield()     open_date = models.datefield()     closed_date = models.datefield()     fee = models.floatfield()      def size(self):         """returns number of registrations camp"""         size = camp.objects                .filter(registration__camp_id=self.camp_id)                .count()         return size      def is_full(self):         """returns false if size of camp less capacity,         otherwise returns true"""         is_full = false if self.size() < self.capacity else true         return is_full      def is_open(self):         """returns true if camp open registration,         otherwise returns false"""         is_open = true if self.open_date                            <= timezone.now().date()                            < self.closed_date                         else false         return is_open      def is_active(self):         """returns true if camp in session,         otherwise returns false"""         is_active = true if self.start_date                              <= timezone.now().date()                             <= self.end_date                           else false         return is_active      def __str__(self):         name = self.name + " " + self.level         return name  class registration(models.model):     registration_id = models.autofield(primary_key=true)     # other fields omitted     camp = models.foreignkey(camp)     creation_date = models.datetimefield(auto_now_add=true, editable=false)      def __str__(self):         return str(self.registration_id) 

and following form

class registrationform(forms.modelform):     class meta:         model = registration         fields = ['camp'] 

is possible make use of various camp model methods (for example is_full, is_open, etc) choose checkboxes rendered in template registrationform instance in context of? there way access these methods via registrationform object in view's context or template?

ideally hide camp instances is_open() returns false. render html class attribute "waitlisted" input tags on camp instances return true is_full(). like

<input type="checkbox" class="waitlisted" ...>camp week 10</input> 

got it!

you can access queryset , methods model instances using .field.queryset attribute of form field shown below.

{% camp in registration_form.camp.field.queryset %}     <p{% if camp.is_full %} class="waitlisted"{% endif %}>         <label>{{ camp }}</label>         <input type="checkbox" name="camps" />     </p> {% endfor %} 

i believe work model methods require 0 arguments, sufficient needs.