*(minor): small refactor

passbook/factors/captcha/models.py

@@ -0,0 +1,23 @@
+"""passbook captcha factor"""
+from django.db import models
+from django.utils.translation import gettext as _
+
+from passbook.core.models import Factor
+
+
+class CaptchaFactor(Factor):
+    """Captcha Factor instance"""
+
+    public_key = models.TextField()
+    private_key = models.TextField()
+
+    type = 'passbook.factors.captcha.factor.CaptchaFactor'
+    form = 'passbook.factors.captcha.forms.CaptchaFactorForm'
+
+    def __str__(self):
+        return f"Captcha Factor {self.slug}"
+
+    class Meta:
+
+        verbose_name = _('Captcha Factor')
+        verbose_name_plural = _('Captcha Factors')