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POViewing subset of objects in Django, Views, URLs, Models
 

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  1. POViewing subset of objects in Django, Views, URLs, Models
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    <p>I know this is a very basic concept in Django, and I have tried the tutorial but it is not working. I am working on a comic book database with the models set like this (at least, a sample of two of the models):</p> <pre><code>Class Title(models.Model): title = models.CharField(max_length=256) vol = models.IntegerField("Vol.") slug = models.SlugField(blank=True, null=True) #desc = models.CharField(max_length=256) class Meta: ordering = ['title'] def get_absolute_url(self): return "/comics2/title/%s" % self.slug def __unicode__(self): return self.title class Issue(models.Model): title = models.ForeignKey(Title) number = models.IntegerField(help_text="Enter the number only. Do not include the hashtag.") writer = models.ManyToManyField(Creator) </code></pre> <p>What I am trying to do is create a page that shows a list of all the issues within that Title.</p> <p>But, I have it setup in the views like this:</p> <pre><code>class AstonishingXMenIssueListView(ListView): context_object_name = "astonishing_list" queryset = Issue.objects.filter(title__title="Astonishing X-Men").order_by("number") template_name = "comics2/astonishing_list.html" </code></pre> <p>My urls.py look like this:</p> <pre><code>(r'^comics2/title/(?P&lt;title_slug&gt;[-\w]+)/$', AstonishingXMenIssueListView.as_view( )), </code></pre> <p>Of course, going to /uncanny-xmen-v1/ shows the same thing as the Astonishing link above.</p> <p>Obviously, this is not a practical way to list issues by title for future issues and titles, so I need it setup so that I don't have to individually do this. Now, I have tried following the Django generic views tutorial, but I got an index tuple error. </p> <p>I've tried this, but it doesn't work. This is what gets me the index tuple error.</p> <pre><code>class IssuesByTitleView(ListView): context_object_name = "issues_by_title_list" template_name = "comics2/issues_by_title.html", def get_queryset(self): title = get_object_or_404(Title, title__iexact=self.args[0]) return Issue.objects.filter(title=title) </code></pre> <p>Any ideas? And can someone please reply in baby-language, as I am new to Django and Python, so simply telling me to look at the Tutorial again isn't going to help. So, maybe writing out the code would help! Thanks!</p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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