Add models and migration

aleksis/core/migrations/0025_additional_fields_group.py

+# Generated by Django 3.0.5 on 2020-04-26 15:34
+
+import django.contrib.postgres.fields.jsonb
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0024_globalpermissions'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AdditionalField',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('extended_data', django.contrib.postgres.fields.jsonb.JSONField(default=dict, editable=False)),
+                ('title', models.CharField(max_length=50, verbose_name='Title of field')),
+                ('field_type', models.CharField(choices=[('booleanfield', 'BooleanField'), ('charfield', 'CharField'), ('datefield', 'DateField'), ('datetimefield', 'DateTimeField'), ('decimalfield', 'DecimalField'), ('emailfield', 'EmailField'), ('floatfield', 'FloatField'), ('Integerfield', 'IntegerField'), ('ipaddressfield', 'IPAddressField'), ('genericipaddressfield', 'GenericIPAddressField'), ('nullbooleanfield', 'NullBooleanField'), ('textfield', 'TextField'), ('timefield', 'TimeField'), ('urlfield', 'URLField')], max_length=50, verbose_name='Type of field')),
+            ],
+            options={
+                'verbose_name': 'Addtitional field',
+                'verbose_name_plural': 'Addtitional fields',
+            },
+        ),
+        migrations.CreateModel(
+            name='PersonGroupThrough',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('extended_data', django.contrib.postgres.fields.jsonb.JSONField(default=dict, editable=False)),
+                ('field', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.AdditionalField')),
+                ('group', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.Group')),
+                ('person', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.Person')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.AddField(
+            model_name='group',
+            name='additional_fields',
+            field=models.ManyToManyField(through='core.PersonGroupThrough', to='core.AdditionalField'),
+        ),
+    ]

aleksis/core/models.py

@@ -23,6 +23,24 @@ from .util.model_helpers import ICONS
 from constance import config
 
 
+FIELD_CHOICES = (
+    ("booleanfield", "BooleanField"),
+    ("charfield", "CharField"),
+    ("datefield", "DateField"),
+    ("datetimefield", "DateTimeField"),
+    ("decimalfield", "DecimalField"),
+    ("emailfield", "EmailField"),
+    ("floatfield", "FloatField"),
+    ("Integerfield", "IntegerField"),
+    ("ipaddressfield", "IPAddressField"),
+    ("genericipaddressfield", "GenericIPAddressField"),
+    ("nullbooleanfield", "NullBooleanField"),
+    ("textfield", "TextField"),
+    ("timefield", "TimeField"),
+    ("urlfield", "URLField"),
+)
+
+
 class School(ExtensibleModel):
     """A school that will have many other objects linked to it.
     AlekSIS has multi-tenant support by linking all objects to a school,
@@ -246,6 +264,15 @@ class Person(ExtensibleModel):
                 self.primary_group = self.member_of.filter(name__regex=pattern).first()
 
 
+class AdditionalField(ExtensibleModel):
+    title = models.CharField(verbose_name=_("Title of field"), max_length=50)
+    field_type = models.CharField(verbose_name=_("Type of field"), choices=FIELD_CHOICES, max_length=50)
+
+    class Meta:
+        verbose_name = _("Addtitional field")
+        verbose_name_plural = _("Addtitional fields")
+
+
 class Group(ExtensibleModel):
     """Any kind of group of persons in a school, including, but not limited
     classes, clubs, and the like.
@@ -276,6 +303,7 @@ class Group(ExtensibleModel):
     )
 
     type = models.ForeignKey("GroupType", on_delete=models.CASCADE, related_name="type", verbose_name=_("Type of group"), null=True, blank=True)
+    additional_fields = models.ManyToManyField(AdditionalField, through="PersonGroupThrough")
 
 
     def get_absolute_url(self) -> str:
@@ -303,6 +331,12 @@ class Group(ExtensibleModel):
         dj_group.save()
 
 
+class PersonGroupThrough(ExtensibleModel):
+    field = models.ForeignKey(AdditionalField, on_delete=models.CASCADE)
+    group = models.ForeignKey(Group, on_delete=models.CASCADE)
+    person = models.ForeignKey(Person, on_delete=models.CASCADE)
+
+
 class Activity(ExtensibleModel):
     user = models.ForeignKey("Person", on_delete=models.CASCADE, related_name="activities")