old_contents: from django.contrib.auth.forms import AuthenticationForm
  from django import forms
  from django.core.validators import MinLengthValidator
  from .models import PoolingUser, Trip, Step
  from users.forms import UserCreationForm
  
  
  class LoginForm(AuthenticationForm):
      username = forms.CharField(widget=forms.EmailInput(attrs={'placeholder': 'Email',
                                                                'class': 'form-control',
                                                                }))
      password = forms.CharField(widget=forms.PasswordInput(attrs={'placeholder': 'Password',
                                                                   'class': 'form-control',
                                                                   }))
  
  
  class SearchTrip(forms.Form):
      """
      Pay attention that id fields are meant to be hidden, since we suppose they come from
      an autocomplete AJAX request via an another CharField.
      """
      origin_id = forms.IntegerField()
      destination_id = forms.IntegerField()
      datetime = forms.DateTimeField()
  
  
  class PoolingUserForm(forms.ModelForm):
      class Meta:
          model = PoolingUser
          # Exclude the one-to-one relation with User
          fields = ['birth_date', 'driving_license', 'cellphone_number']
  
  
  class TripForm(forms.ModelForm):
      class Meta:
          model = Trip
          fields = ['date_origin', 'max_num_passengers']
  
  
  class StepForm(forms.ModelForm):
      class Meta:
          model = Step
          fields = ['origin', 'destination', 'hour_origin', 'hour_destination', 'max_price']
  
  
  class UserForm(UserCreationForm):
      class Meta(UserCreationForm.Meta):
          fields = ('email', 'first_name', 'last_name')
  
      def __init__(self, *args, **kwargs):
          super().__init__(*args, **kwargs)
          for field_name in self.Meta.fields:
              self[field_name].field.required = True
          self['password1'].field.validators = [MinLengthValidator(6)]
  
new_contents: from django.contrib.auth.forms import AuthenticationForm
  from django import forms
  from django.core.validators import MinLengthValidator
  from .models import PoolingUser, Trip, Step
  from users.forms import UserCreationForm
  
  
  class LoginForm(AuthenticationForm):
      username = forms.CharField(widget=forms.EmailInput(attrs={'placeholder': 'Email',
                                                                'class': 'form-control',
                                                                }))
      password = forms.CharField(widget=forms.PasswordInput(attrs={'placeholder': 'Password',
                                                                   'class': 'form-control',
                                                                   }))
  
  
  class SearchTrip(forms.Form):
      """
      Pay attention that id fields are meant to be hidden, since we suppose they come from
      an autocomplete AJAX request via an another CharField.
      """
      origin_id = forms.IntegerField()
      destination_id = forms.IntegerField()
      datetime = forms.DateTimeField()
  
  
  class PoolingUserForm(forms.ModelForm):
      class Meta:
          model = PoolingUser
          # Exclude the one-to-one relation with User
          fields = ['birth_date', 'driving_license', 'cellphone_number']
  
  
  class TripForm(forms.ModelForm):
      class Meta:
          model = Trip
          fields = ['date_origin', 'max_num_passengers']
  
  
  class StepForm(forms.ModelForm):
      class Meta:
          model = Step
          fields = ['origin', 'destination', 'hour_origin', 'hour_destination', 'max_price']
  
  
  StepFormSet = inlineformset_factory(parent_model=Trip, model=Step, form=StepForm, can_delete=False)
  
  
  class UserForm(UserCreationForm):
      class Meta(UserCreationForm.Meta):
          fields = ('email', 'first_name', 'last_name')
  
      def __init__(self, *args, **kwargs):
          super().__init__(*args, **kwargs)
          for field_name in self.Meta.fields:
              self[field_name].field.required = True
          self['password1'].field.validators = [MinLengthValidator(6)]
  
subject: Add StepFormSet inlineformset to forms.py