How do I set up this formset in Django - django

Question

I'm trying to build a form for scheduling a single (or double) elimination tournament. For example, consider a league which has teams TeamA, TeamB, TeamC, and TeamD (all of which are already defined in my database).
The form should look something like
Style: choice field - {single or double elimination}
Seed1: choice field - {TeamA or TeamB or TeamC or TeamD}
Seed2: choice field - {TeamA or TeamB or TeamC or TeamD}
Seed3: choice field - {TeamA or TeamB or TeamC or TeamD}
Seed4: choice field - {TeamA or TeamB or TeamC or TeamD}
This is what I have...
class EliminationForm(Form):
"""
Form for generating an elimination structure of Game instances
"""
choices = [(1, "Single Elimination"), (2, "Double Elimination")]
style = ChoiceField(choices=choices, widget=Select(attrs={'class':'form-control'}))
How would I set up this form to dynamically build the "Seed" fields for each team in the league?
Here's my models.py
class League(models.Model):
league_name = models.CharField(max_length=60)
class Team(models.Model):
league = models.ForeignKey('League')
team_name = models.CharField(max_length=60)

Answer 1

I think what you are looking for is a ModelChoiceField.
It will allow you to populate the dropdowns with the teams you have in the database:
class EliminationForm(Form):
"""
Form for generating an elimination structure of Game instances
"""
choices = [(1, "Single Elimination"), (2, "Double Elimination")]
style = ChoiceField(
choices=choices,
widget=Select(attrs={'class':'form-control'})
)
seed1 = ModelChoiceField(
queryset=Team.objects.all(),
)
seed2 = ModelChoiceField(
queryset=Team.objects.all(),
)
seed3 = ModelChoiceField(
queryset=Team.objects.all(),
)
seed4 = ModelChoiceField(
queryset=Team.objects.all(),
)
You can also filter the objects being used to only select teams of the same league, or only teams assigned to a league etc.
You may also want to add a __unicode__ function to the Team model to define how it is displayed in the dropdown.
class Team(models.Model):
league = models.ForeignKey('League')
team_name = models.CharField(max_length=60)
def __unicode__(self):
return self.team_name