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POForeignKey field will not appear in Django admin site
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copied!<p>A foreign key on a model is not appearing in the Django admin site. This is irrespective of whether the field is explicitly specified in a ModelAdmin instance (fields = ('title', 'field-that-does-not-show-up')) or not. </p> <p>I realize there are many variables that could be causing this behavior.</p> <pre><code>class AdvertiserAdmin(admin.ModelAdmin): search_fields = ['company_name', 'website'] list_display = ['company_name', 'website', 'user'] class AdBaseAdmin(admin.ModelAdmin): list_display = ['title', 'url', 'advertiser', 'since', 'updated', 'enabled'] list_filter = ['updated', 'enabled', 'since', 'updated', 'zone'] search_fields = ['title', 'url'] </code></pre> <p>The problem is the advertiser foreign key is not showing up in the admin for AdBase</p> <pre><code>class Advertiser(models.Model): """ A Model for our Advertiser """ company_name = models.CharField(max_length=255) website = models.URLField(verify_exists=True) user = models.ForeignKey(User) def __unicode__(self): return "%s" % self.company_name def get_website_url(self): return "%s" % self.website class AdBase(models.Model): """ This is our base model, from which all ads will inherit. The manager methods for this model will determine which ads to display return etc. """ title = models.CharField(max_length=255) url = models.URLField(verify_exists=True) enabled = models.BooleanField(default=False) since = models.DateTimeField(default=datetime.now) expires_on=models.DateTimeField(_('Expires on'), blank=True, null=True) updated = models.DateTimeField(editable=False) # Relations advertiser = models.ForeignKey(Advertiser) category = models.ForeignKey(AdCategory) zone = models.ForeignKey(AdZone) # Our Custom Manager objects = AdManager() def __unicode__(self): return "%s" % self.title @models.permalink def get_absolute_url(self): return ('adzone_ad_view', [self.id]) def save(self, *args, **kwargs): self.updated = datetime.now() super(AdBase, self).save(*args, **kwargs) def impressions(self, start=None, end=None): if start is not None: start_q=models.Q(impression_date__gte=start) else: start_q=models.Q() if end is not None: end_q=models.Q(impression_date__lte=end) else: end_q=models.Q() return self.adimpression_set.filter(start_q & end_q).count() def clicks(self, start=None, end=None): if start is not None: start_q=models.Q(click_date__gte=start) else: start_q=models.Q() if end is not None: end_q=models.Q(click_date__lte=end) else: end_q=models.Q() return self.adclick_set.filter(start_q & end_q).count() class BannerAd(AdBase): """ A standard banner Ad """ content = models.ImageField(upload_to="adzone/bannerads/") </code></pre> <p>The mystery deepens. I just tried to create a ModelForm object for both AdBase and BannerAd, and both generated fields for the advertiser. Some crazy admin things going on here...</p>

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