Hi all,
In order to teach myself Django I am creating a simple film database
project. My search code looks like this:
results = Film.objects.filter(
Q(title__icontains=q) |
Q(director__name__icontains=q) |
Q(actors__name__icontains=q) |
Q(screenwriters__name__icontains=q) |
Q(genre__icontains=q)
)
This lets me have a 'catch-all' search box that allows you to search
on all of the fields of my film class. It works, but I always get
duplicate results. The same film will appear several times (typically
3, 4 or 6 times) in the search results.
As a sort of kluge to get around this, and to try to further diagnose
what was happening, I wrote the following to try to remove duplicate
results:
films = list(results)
while len(films) > 1:
if films[len(films)-1] == films[len(films)-2]:
films.remove(films[len(films)-1])
This executes without any errors, but does not remove duplicate
results from the list, from which I can only infer that for some
reason the results that I think are identical are in fact different in
some way.
My models look like this:
class Director(models.Model):
name = models.CharField(max_length=70)
def __unicode__(self):
return u'%s' % (self.name,)
class Actor(models.Model):
name = models.CharField(max_length=70)
def __unicode__(self):
return u'%s' % (self.name,)
class Screenwriter(models.Model):
name = models.CharField(max_length=70)
def __unicode__(self):
return u'%s' % (self.name,)
class Film(models.Model):
title = models.CharField(max_length=100)
genre = models.CharField(max_length=40)
actors = models.ManyToManyField(Actor)
screenwriters = models.ManyToManyField(Screenwriter)
director = models.ForeignKey(Director)
release_date = models.DateField(blank=True, null=True)
def __unicode__(self):
return self.title
Does anybody have any ideas on what is happening here? I am flummoxed!.
Thanks in advance,
Tom
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