.

generic/admin.py

@@ -2,11 +2,12 @@ from longs.models import Exam
 from django.contrib import admin
 
 # Register your models here.
-from .models import Examination, Sign, Condition, Plane
+from .models import Examination, Sign, Condition, Plane, Contrast
 #from .models import Examination, Sign, Site, Condition
 
 admin.site.register(Examination)
 admin.site.register(Sign)
 #admin.site.register(Site)
 admin.site.register(Condition)
-admin.site.register(Plane)
+admin.site.register(Plane)
+admin.site.register(Contrast)

generic/migrations/0009_contrast.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.1.3 on 2021-02-25 18:16
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('generic', '0008_plane'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Contrast',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('contrast', models.CharField(max_length=200)),
+            ],
+            options={
+                'ordering': ('contrast',),
+            },
+        ),
+    ]

generic/models.py

@@ -16,6 +16,15 @@ class Plane(models.Model):
     class Meta:
         ordering = ('plane', )
 
+class Contrast(models.Model):
+    contrast = models.CharField(max_length=200)
+
+    def __str__(self):
+        return self.contrast
+
+    class Meta:
+        ordering = ('contrast', )
+
 class Examination(models.Model):
     examination = models.CharField(max_length=200)