Where I am doing wrong? Form is not fetching data from server

Using Django Forms & APIs
1

my form.py

from app.models import CredentialModels

class EmailForm(forms.Form):
    email = forms.ChoiceField(choices=[], widget=forms.Select(attrs={'class': 'form-control'}))
    signature = forms.CharField(widget=forms.Textarea(attrs={'class': 'form-control', 'rows': 5}))

    def __init__(self, user_id, *args, **kwargs):
        super().__init__(*args, **kwargs)
        credentials = CredentialModels.objects.filter(user_id=user_id)
        self.fields['email'].choices = [(c.email, c.email) for c in credentials]

My views.py:

def update_signature(request):
     email_form = EmailForm(user_id=request.user.id)
         
    return render(request, 'update_signature.html', {'email_form': email_form})

My model:

class CredentialModels(models.Model):
    user_id = models.CharField(max_length=255)
    email = models.EmailField()
    access_token = models.CharField(max_length=255)
    token_expiry = models.DateTimeField()
    refresh_token = models.CharField(max_length=255)
    client_id = models.CharField(max_length=255)
    client_secret= models.CharField(max_length=255)
    
    def __str__(self):
        return self.email
    class Meta:
        verbose_name_plural = "Email"

And form:

{% block content %}
  <div class="row">
    <div class="col-md-6 offset-md-3">
      <form method="get">
        {% csrf_token %}
        <div class="form-group">
          {{ email_form.email.label_tag }}
          {{ email_form.email }}
        </div>
        <div class="form-group">
          {{ email_form.signature.label_tag }}
          {{ email_form.signature }}
        </div>
        <button type="submit" class="btn btn-primary">Update</button>
      </form>
    </div>
  </div>
{% endblock %}

I want to see the email of the current loggedin user on form select. But it shows empty dropdownlist

2

The field request.user.id is going to be an integer value.

However, in your CredentialModels you have:

If CredentialModels is supposed to be associated with a specific user, then the user_id field should probably be either a ForeignKey or OneToOneField with User, and more appropriately named user instead of user_id.