DataError value too long for type character varying(100)

问题

I need to make changes to my profiles object at the admin site in Django, but when I click save, I get the error DataError at /admin/profiles/profiles/31/change/ value too long for type character varying(100). The weird thing is, it worked when I made changes to the same field locally, but when I deployed to Heroku, it gave me the 'DataError'. My image url is the only long string in my object. Side note, I am still using sqlite3 with Heroku because the data is very small.

Currently: http://res.cloudinary.com/firslovetema/image/upload/v1568570093/ypqiiwg5eq5uyd7oie6g

I have tried setting the max_length to 512. it still did not work.

my models.py file:

   from django.db import models
   from cloudinary.models import CloudinaryField

class profiles(models.Model):
     firstname = models.CharField(max_length=120, default = 'null') #max_length=120
     lastname = models.CharField(max_length=120, default = 'null') 
     gender = models.CharField(max_length=120, default = 'null') 
     dob = models.CharField(max_length=120, default = 'null') 
     callNumber = models.CharField(max_length=120, default = 'null') 
     whatsappNumber = models.CharField(max_length=120, default = 'null') 
     ministry = models.CharField(max_length=120, default = 'null') 
     centre = models.CharField(max_length=120, default = 'null') 
     campus = models.CharField(max_length=120, default = 'null') 
     hostel_address = models.CharField(max_length=120, default = 'null') 
     city = models.CharField(max_length=120, default = 'null') 
     qualification = models.CharField(max_length=120, default = 'null') 
     profession = models.CharField(max_length=120, default = 'null') 
     maritalStatus = models.CharField(max_length=120, default = 'null') 
     bacenta = models.CharField(max_length=120, default = 'null') 
     layschool = models.CharField(max_length=120, default = 'null') 
     imagefile = CloudinaryField('image', null=True, max_length=512, blank=True)


 def __str__(self):
    return str(self.imagefile)

Full error log:

DataError at /admin/profiles/profiles/31/change/
value too long for type character varying(100)
   Request Method:  POST
   Request URL: https://ewuradjango.herokuapp.com/admin/profiles/profiles/31/change/
   Django Version:  2.2.3
   Exception Type:  DataError
   Exception Value: 
   value too long for type character varying(100)
   Exception Location:  /app/.heroku/python/lib/python3.7/site- 
   packages/django/db/backends/utils.py in _execute, line 84
   Python Executable:   /app/.heroku/python/bin/python
   Python Version:  3.7.1
   Python Path: 
   ['/app/.heroku/python/bin',
   '/app',
   '/app/.heroku/python/lib/python37.zip',
   '/app/.heroku/python/lib/python3.7',
   '/app/.heroku/python/lib/python3.7/lib-dynload',
   '/app/.heroku/python/lib/python3.7/site-packages']
Server time:    Tue, 17 Sep 2019 11:31:39 +0000

回答1:

I got the answer, I had not generated and applied migrations to create the imagefile field, I only needed to makemigrations locally, but after commit the migration files I wanted to migrate on Heroku with:

 heroku run python3 manage.py migrate

来源：https://stackoverflow.com/questions/57973619/dataerror-value-too-long-for-type-character-varying100

标签

python

django

heroku

django-models

cloudinary