old_contents: from django import forms
  from django.template.defaultfilters import slugify
  
  from crispy_forms.helper import FormHelper
  from crispy_forms.layout import Layout, Fieldset, Submit
  from crispy_forms.bootstrap import FormActions
  
  from competition.models.team_model import Team
  
  
  class TeamForm(forms.ModelForm):
      class Meta:
          model = Team
          fields = ('name', )
  
      def __init__(self, *args, **kwargs):
          self.helper = FormHelper()
          self.helper.form_class = 'form-horizontal'
          self.helper.layout = Layout(
              Fieldset(
                  'Create a new team',
                  'name',
              ),
              FormActions(
                  Submit('submit', 'Submit')
              )
          )
          super(TeamForm, self).__init__(*args, **kwargs)
  
      def clean_name(self):
          c = self.instance.competition
          n = self.cleaned_data['name']
          s = slugify(n)
          if Team.objects.filter(competition=c, slug=s).exists():
              msg = "This name is already taken for %s" % c.name
              raise forms.ValidationError(msg)
          return n
  
      def validate_unique(self):
          exclude = self._get_validation_exclusions()
          exclude.remove('competition')
  
          try:
              self.instance.validate_unique(exclude=exclude)
          except ValidationError, e:
              self._update_errors(e.message_dict)
  
new_contents: from django import forms
  from django.template.defaultfilters import slugify
  
  from crispy_forms.helper import FormHelper
  from crispy_forms.layout import Layout, Fieldset, Submit
  from crispy_forms.bootstrap import FormActions
  
  from competition.models.team_model import Team
  
  
  class TeamForm(forms.ModelForm):
      class Meta:
          model = Team
          fields = ('name', )
  
      def __init__(self, *args, **kwargs):
          self.helper = FormHelper()
          self.helper.form_class = 'form-horizontal'
          self.helper.label_class = 'col-lg-2'
          self.helper.field_class = 'col-lg-8'
          self.helper.layout = Layout(
              Fieldset(
                  'Create a new team',
                  'name',
              ),
              FormActions(
                  Submit('submit', 'Submit')
              )
          )
          super(TeamForm, self).__init__(*args, **kwargs)
  
      def clean_name(self):
          c = self.instance.competition
          n = self.cleaned_data['name']
          s = slugify(n)
          if Team.objects.filter(competition=c, slug=s).exists():
              msg = "This name is already taken for %s" % c.name
              raise forms.ValidationError(msg)
          return n
  
      def validate_unique(self):
          exclude = self._get_validation_exclusions()
          exclude.remove('competition')
  
          try:
              self.instance.validate_unique(exclude=exclude)
          except ValidationError, e:
              self._update_errors(e.message_dict)
  
subject: Update forms to bootstrap 3