View source for Syllabus 2010 t3 p2

The assignment is to create a simple "overview" or list view of your collection.

'''Due 15 Jun'''


== Example ==

The following is a simple example from class of a Music viewing application.

First, here's a simple single model (Track), using a text field with ''choices'' for giving each track a rating.

=== models.py ===
'''models.py''' (inside the "application" folder)
<source lang="python">
from django.db import models

RATINGS = (
    ('1', '*'),
    ('2', '**'),
    ('3', '***'),
    ('4', '****'),
    ('5', '*****')
)

class Track (models.Model):
    file = models.FileField(upload_to="audio")
    rating = models.CharField (max_length=255, choices=RATINGS, blank=True)
    email = models.EmailField(blank=True)
    
    def __unicode__ (self):
        return self.file.name
</source>


=== urls.py ===

Write a url pattern that includes an item id:
<source lang="text">
from django.conf.urls.defaults import *

urlpatterns = patterns('',
    (r'^music/$', 'music.views.track_list'),
    (r'^music/(?P<id>\d+)$', 'music.views.track_detail'),
)
</source>


=== views.py ===
Also within your application folder.

<source lang="python">
from django.shortcuts import render_to_response
from django.template import RequestContext
from models import *

def track_list (request):
    context = {}
    context['tracks'] = Track.objects.all()
    return render_to_response("track_list.html", context, context_instance = RequestContext(request))
</source>


Then make a view to see the details of a specifc track:

<source lang="python">
def track_detail (request, id):
    context = {}
    context['track'] = Track.objects.get(id=id)
    return render_to_response("track_detail.html", context, context_instance = RequestContext(request))
</source>

=== template ===

<source lang="text">
<h1>cool audio player</h1>
<img src="" />
<table border="1">
<tr>
<td>Name of track</td>
<td>Rating</td>
</tr>

{% for track in tracks %}
<tr>
<td>
    <a href="">     
        {{ track.file.name }}
    </a>
</td>
<td>{{ track.rating }}</td>
</tr>
{% endfor %}

</table>
</source>


=== urls.py ===
Change "urls.py" to include a mapping from a URL to a view function in your applications "view.py". At the "project" level -- next to "settings.py", you can eventually also create a urls.py ''inside'' your application folder and include it from the "outer" urls.py for increased modularity)

<source lang="python">
from django.conf.urls.defaults import *

from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    (r'^music/', "music.views.track_list"),
    (r'^admin/', include(admin.site.urls)),
)
</source>


== Albert: ==

[[Image:Syllabus_2010_t3_p2_face_albert.png|thumb]]

<source lang="text">
from django.db import models
from sorl.thumbnail.fields import ImageWithThumbnailsField

class Poster(models.Model):
    title = models.TextField(blank=True)
    body = models.TextField(blank=True)
    # images = []
    def __unicode__(self):
        return self.title 

parts = (
("e", "eye"),
("m", "mouth"),
("n", "nose"),
("h", "hand"),
)

class Image(models.Model):
    image = ImageWithThumbnailsField(
        upload_to='images',
        thumbnail={'size': (120, 120)},
        extra_thumbnails={
            'icon': {'size': (32, 32), 'options': ['crop', 'upscale']},
            'large': {'size': (640, 640)},
        }
    )
    part = models.CharField(max_length=255, choices=parts)
    #poster = models.ManyToManyField(Poster, related_name="images")
    
    def __unicode__(self):
        return self.image.name
</source>



== Attachments ==

*[[File:Syllabus_2010_t3_p2_face_albert.png]]