service id added

input/forms.py

@@ -31,7 +31,7 @@ class ExternForm(ModelForm):
 
     class Meta:
         model = Extern
-        exclude = ('granted', 'granted_date', 'survey_mail_send')
+        exclude = ('granted', 'granted_date', 'survey_mail_send', 'service_id')
 
 INTERN_CHOICES = {'PRO': 'Projektsteckbrief',
                   'HON': 'Ehrenamtsbescheinigung, Akkreditierung oder Redaktionsbestätigung',
@@ -55,12 +55,14 @@ class LibraryForm(ModelForm):
 
     class Meta:
         model = Library
-        exclude = ('realname', 'email', 'username', 'type', 'granted', 'granted_date', 'survey_mail_send')
+        exclude = ('realname', 'email', 'username', 'type', 'granted',\
+                    'granted_date', 'survey_mail_send', 'service_id')
 
 class IFGForm(ModelForm):
     class Meta:
         model = IFG
-        exclude = ('realname', 'email', 'username', 'granted', 'granted_date', 'survey_mail_send')
+        exclude = ('realname', 'email', 'username', 'granted', 'granted_date',\
+        'service_id', 'survey_mail_send')
 
 class HonoraryCertificateForm(ModelForm):
     class Meta:

input/migrations/0033_auto_20201029_1338.py

@@ -0,0 +1,43 @@
+# Generated by Django 3.1.1 on 2020-10-29 13:38
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('input', '0032_auto_20201029_1213'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='businesscard',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+        migrations.AddField(
+            model_name='email',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+        migrations.AddField(
+            model_name='ifg',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+        migrations.AddField(
+            model_name='library',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+        migrations.AddField(
+            model_name='list',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+        migrations.AddField(
+            model_name='literature',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+    ]

input/models.py

@@ -30,6 +30,16 @@ class Extern(Volunteer):
     ''' abstract basis class for all data entered by extern volunteers '''
     username = models.CharField(max_length=200, null=True)
 
+    # the following Fields are not supposed to be edited by users
+    service_id = models.CharField(max_length=15, null=True, blank=True)
+
+    def save(self,*args,**kwargs):
+        # is there a way to call super().save() only once?
+        super().save(*args,*kwargs)
+        print('******EXTERNSAVE********')
+        self.service_id = type(self).__name__ + str(self.pk)
+        super().save(*args,*kwargs)
+
     class Meta:
         abstract = True