Starting today, you can use the new Library version to access four rich collections from the Iowa Digital Newspaper Library at the University of Iowa’s website: John Greco Papers, Frank Luther Mott Papers, William D. Patterson Papers, and the William H. Wilkison Collection.
Mott, Patterson, and Wilkison, three of the original members of the Iowa Newspaper Association, are leading scholars of 19th century newspaper and popular culture.
The newspapers that these scholars have made available online in the Iowa Digital Newspaper Library are full-text searchable and fully searchable by subject and keyword.Q:
Custom Django Model Field: How to override get_db_prep_value?
The following is a custom field in a Django model.
class CustomField(models.ModelField):
def get_db_prep_value(self, value):
if not value:
return ''
else:
return unicode(value)
This field works fine, but it's not very DRY. Is there a way I could make this look like this:
class CustomField(models.ModelField):
def get_db_prep_value(self, value):
return value
A:
Overriding get_db_prep_value() is actually not too bad. Here's an example:
from django.db import models
class ExampleModel(models.Model):
title = models.CharField(max_length=100, blank=False, default=None)
class CustomModel(models.Model):
title = models.CharField(max_length=100, blank=True, default=None)
class CustomField(models.ModelField):
def get_prep_value(self, value):
if value is None:
return ""
else:
return self.verbose_name(value)
def get_db_prep_value(self, value ac619d1d87
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