> Also when creating my models I use "id = models.AutoField(primary_key=True)" > for my ID field. This way Django will Auto generate an ID for each record. This is unnecessary. Django does this automatically. https://docs.djangoproject.com/en/2.0/topics/db/models/#automatic-primary-key-fields
From: django-users@googlegroups.com [mailto:django-users@googlegroups.com] On Behalf Of Gerald Brown Sent: Wednesday, July 18, 2018 4:51 AM To: django-users@googlegroups.com Subject: Re: Django foreign-key cannot assign must be a instance Also when creating my models I use "id = models.AutoField(primary_key=True)" for my ID field. This way Django will Auto generate an ID for each record. On Tuesday, 17 July, 2018 08:03 PM, Sainath Bavugi wrote: I am developing a web app using Django. I have created the table in MySQL database and then generated the models.py using inspectdb. I am able to fetch details and connect to the database without any issues. But while saving the values to the particular table, below error is shown Cannot assign "3": "List.id" must be a "Order" instance. command used sav_list = List(id=4, item_name ='name1', item_desc='desc1', location='location', reason='rfp', pid=3) My models class List(models.Model): id = models.IntegerField(db_column='ID', primary_key=True) # Field name made lowercase. item_name = models.CharField(db_column='Item_Name', max_length=255) # Field name made lowercase. item_desc = models.CharField(db_column='Item_Desc', max_length=300) # Field name made lowercase. location = models.CharField(db_column='Location', max_length=100, blank=True, null=True) # Field name made lowercase. reason = models.CharField(db_column='Reason', max_length=100, blank=True, null=True) # Field name made lowercase. pid = models.ForeignKey('Order', models.DO_NOTHING, db_column='PID') # Field name made lowercase. class Order(models.Model): poid = models.IntegerField(db_column='POID', primary_key=True) # Field name made lowercase. po = models.CharField(db_column='PO', unique=True, max_length=20) # Field name made lowercase. quote = models.CharField(db_column='Quote', unique=True, max_length=20) # Field name made lowercase. condition = models.CharField(db_column='Condition', max_length=15) # Field name made lowercase. I have tried relate_name for foreign key but still same behaviour. Same values can be stored on database without any issues. Only Django throws an error. Please someone help me!!! -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com<mailto:django-users+unsubscr...@googlegroups.com>. To post to this group, send email to django-users@googlegroups.com<mailto:django-users@googlegroups.com>. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/3dce2148-ee12-41c5-996f-f21c7b33b4a5%40googlegroups.com<https://groups.google.com/d/msgid/django-users/3dce2148-ee12-41c5-996f-f21c7b33b4a5%40googlegroups.com?utm_medium=email&utm_source=footer>. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com<mailto:django-users+unsubscr...@googlegroups.com>. To post to this group, send email to django-users@googlegroups.com<mailto:django-users@googlegroups.com>. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/8e431e64-34d5-6c63-012e-242ed49bef4e%40gmail.com<https://groups.google.com/d/msgid/django-users/8e431e64-34d5-6c63-012e-242ed49bef4e%40gmail.com?utm_medium=email&utm_source=footer>. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To post to this group, send email to django-users@googlegroups.com. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/8799b338bd72424fbd9608814cbd171d%40ISS1.ISS.LOCAL. For more options, visit https://groups.google.com/d/optout.
