Nrthugu

I'm trying to add a placeholder to the username field in the UserCreationForm
but i can't understand how to do it.
I have already change the forms.py file in this way /lib/site-packages/django/contrib/auth/forms.py.

I add a placeholder to password1 and password2 fields and work like this:

class UserCreationForm(forms.ModelForm):

"""

A form that creates a user, with no privileges, from the given username and

password.

"""

error_messages = {

    'password_mismatch': _("The two password fields didn't match."),

}

password1 = forms.CharField(

    label=_("Password"),

    strip=False,

    widget=forms.PasswordInput(attrs={'placeholder':'Password'}),

    help_text=password_validation.password_validators_help_text_html(),

)

password2 = forms.CharField(

    label=_("Password confirmation"),

    widget=forms.PasswordInput(attrs={'placeholder':'Confirmar Password'}),

    strip=False,

    help_text=_("Enter the same password as before, for verification."),

)

I can see probably the username field is coming from class meta:

class Meta:

    model = User

    fields = ("username",)

    field_classes = {'username': UsernameField}

from this class but i'm not sure about that

class UsernameField(forms.CharField):

def to_python(self, value):

    return unicodedata.normalize('NFKC', super().to_python(value))

I don't understand how add a placeholder to username field

this is my html

<form method="post" action=".">

                {% csrf_token %}

                    {% for field in form %}

                        {{ field }}<br />

                        {% for error in field.errors %}

                        <p style="color: red">{{ error }}</p>

                        {% endfor %} 

                    {% endfor %}

                <input id="submit-signup-btn" type="submit" value="Iniciar"/>    

            </form>

You can also define widgets in form's Meta class.

class Meta:

    model = User

    fields = ("username",)

    field_classes = {'username': UsernameField}

    widgets = {

        'username': form.fields.TextInput(attrs={'placeholder': 'Your text for placeholder'})

    }

After a while looking at this, i found a way to do it, this is the way i did it:

in the file /lib/site-packages/django/contrib/auth/forms.py, in class UserCreationForm, under class Meta there is a init function where you can see this line

self.fields[self._meta.model.USERNAME_FIELD].widget.attrs.update({'autofocus': 

True})

i added the placeholder to the end of the line in the update method like this:

self.fields[self._meta.model.USERNAME_FIELD].widget.attrs.update({'autofocus': True,

                                                                          'placeholder':'Nome Perfil'})