>
> I just want to make a join through this tables with the select_related
> to be able to print Image.name, Instrument.name, Channel.name
Your query would be something like this:
images = Image.objects.select_related()
You can use this query set in your templates or in Python:
Template example:
<ul>
{% for image in images %}
<li>{{ image.name }}</li>
<li>{{ image.instrument.name }}</li>
<li>{{ image.channel.name }}</li>
{% endfor %}
</ul>
Python:
for image in images:
print image.name, image.instrument.name, image.channel.name
> And i don't know how to do this
Hope the above helps. Also, you should understand how select_related
works. Ot's main purpose is to save you DB trips but it can cause
performance problems if not used properly. Read on here for further
details:
http://www.djangoproject.com/documentation/db-api/#select-related
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