Create extra fields for the profile dynamically

aleksis/apps/abi/migrations/0002_additionalprofilefield.py

+# Generated by Django 3.2.4 on 2021-07-26 14:01
+
+import django.contrib.sites.managers
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('sites', '0002_alter_domain_unique'),
+        ('abi', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AdditionalProfileField',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('extended_data', models.JSONField(default=dict, editable=False)),
+                ('name', models.CharField(max_length=255)),
+                ('site', models.ForeignKey(default=1, editable=False, on_delete=django.db.models.deletion.CASCADE, to='sites.site')),
+            ],
+            options={
+                'abstract': False,
+            },
+            managers=[
+                ('objects', django.contrib.sites.managers.CurrentSiteManager()),
+            ],
+        ),
+    ]

aleksis/apps/abi/model_extensions.py

+from jsonstore import fields
+
+from .models import AdditionalProfileField, Profile
+
+def update_profile_fields():
+    for object in AdditionalProfileField.objects.all():
+        try:
+            Profile.field(**{object.field_name: fields.CharField(max_length=255, verbose_name=object.name)})
+        except ValueError:
+            pass
\ No newline at end of file

aleksis/apps/abi/models.py

 from django.db import models
+from django.utils.text import slugify
 from django.utils.translation import gettext as _
 
+from jsonstore import fields
+
 from aleksis.core.mixins import ExtensibleModel
 from aleksis.core.models import Person
 
@@ -52,6 +55,25 @@ class Profile(ExtensibleModel):
         verbose_name = _("Personal profile")
         verbose_name_plural = _("Personal profiles")
 
+class AdditionalProfileField(ExtensibleModel):
+    name = models.CharField(max_length=255, help_text=_("Warning! This field can't be edited after creation!"))
+
+    @property
+    def field_name(self):
+        return "abi_" + slugify(self.name).replace("-", "_")
+
+    def __str__(self):
+        return self.name
+
+    def save(self, *args, **kwargs):
+        if self.pk is None:
+            super().save(*args, **kwargs)
+
+            from .model_extensions import update_profile_fields # noqa
+
+            update_profile_fields()
+
+
 
 class RankingCategory(ExtensibleModel):
     name = models.CharField(max_length=255, verbose_name=_("Name"))