Quick and dirty "what I'm reading" plugin
| Django | 2008-11-22 |
(Note: that partner id in the absolute_url below is mine. I won't object if you want to use it, but you might be better off signing up for your own: Powells.com Partner Program)
The model:
class Book(models.Model):
RATING_CHOICES = (
('1', '1'),
('2', '2'),
('3', '3'),
('4', '4'),
('5', '5'),
)
STATUS_CHOICES = (
('1', 'have read'),
('2', 'currently reading'),
('3', 'want to read'),
)
title = models.CharField(max_length=255)
author_first_name = models.CharField(max_length=255)
author_last_name = models.CharField(max_length=255)
isbn = models.CharField(max_length=255)
status = models.IntegerField(max_length=2, blank=True, null=True, choices=STATUS_CHOICES)
rating = models.IntegerField(max_length=2, blank=True, null=True, choices=RATING_CHOICES)
active = models.BooleanField(default=True)
created_at = models.DateTimeField(auto_now_add=True)
def __unicode__(self):
return u"%s" % self.title
def get_absolute_url(self):
return "http://www.powells.com/partner/33557/biblio/%s/" % self.isbn
class Meta:
ordering = ['status']
The admin:
from django.contrib import admin
from myblogproject.plugins.books.models import Book
class BookAdmin(admin.ModelAdmin):
list_display = ('title', 'author_last_name', 'author_first_name', 'status', 'rating',)
list_filter = ('status', 'rating',)
The inclusion tag:
from django import template
from django.core.exceptions import ObjectDoesNotExist
from myblogproject.plugins.books.models import Book
register = template.Library()
def book_list():
current_books = Book.objects.filter(status=2).order_by('-created_at')[:1]
tbr_books = Book.objects.filter(status=3).order_by('-created_at')[:5]
return {'current_books': current_books, 'tbr_books': tbr_books}
register.inclusion_tag('book_list.html')(book_list)
The template used to render the tag:
<div id="sidebar-list">
{% if current_books %}
What I'm reading:
<ul>
{% for book in current_books %}
<li><a href="{{ book.get_absolute_url }}" target="new">{{ book.title }}</a><br />
{% endfor %}
</ul>
{% endif %}
{% if tbr_books %}
On the pile:
<ul>
{% for book in tbr_books %}
<li><a href="{{ book.get_absolute_url }}" target="new">{{ book.title }}</a><br />
{% endfor %}
</ul>
{% endif %}
</div>
Plugging the tag into my sidebar template:
{% load plugin_tags %}
{% library_list %}
My favorite line from the custom template tags documentation:
- "Tags are more complex than filters, because tags can do anything."