models.py with ManyToMany and progmatically adding data via a shell script

Question

Hi Guys,

First post to stackoverflow I did do a search and came up dry. I also own the django book (Forcier,Bissex,Chun) and they don't explain how to do this. In short I can't figure out how to progmatically add a data via a python shell script to the ManyToMay model..

from django.db import models
from django.contrib import admin

class Client(models.Model):
  client        = models.CharField(max_length=256, primary_key=True)
  access        = models.DateField()
  description   = models.TextField()
  host          = models.CharField(max_length=256)
  lineEnd       = models.CharField(max_length=256)
  options       = models.TextField()
  owner         = models.CharField(max_length=100)
  root          = models.CharField(max_length=256)
  submitOptions = models.CharField(max_length=256)
  update        = models.DateField()
  def __unicode__(self):
    return str(self.client)
admin.site.register(Client)


class Change(models.Model):
  """This simply expands out 'p4 describe' """
  change        = models.IntegerField(primary_key=True)
  client        = models.ManyToManyField(Client)
  desc          = models.TextField()
  status        = models.CharField(max_length=128)
  def __unicode__(self):
    return str(self.change)
admin.site.register(Change)

Here is what I have which works but I don't know how to add the ManyToMany. I can't seem to figure out how to progmatically call it. I know the row in SQL exists.

--- massImport.py ---

# Assume the client "clientspec" exists.  I know how to create that if 
neeeded. 
changes = [ { 'change': 123, 'desc': "foobar", status': "foobar", 
client': "clientspec", }] 
for item in changes: 
  entry = Change( 
            change    = item['change'], 
            desc    = item['desc'], 
            status    = item['status'], 
            # client    = Client.objects.filter(client=item['client']) 
            ) 
  entry.save()

Can anyone show me where the error of my ways is. I would really appreciate it. Thanks!!

Answer 1

.filter returns a list, when you need is a single object, so you should use .get(client=item['client'])

Answer 2

Turns out Tiago was very close..

# Assume the client "clientspec" exists.  I know how to create that if 
neeeded. 
changes = [ { 'change': 123, 'desc': "foobar", status': "foobar", 
client': "clientspec", }] 
for item in changes: 
  entry = Change()
  entry.change  = item['change']
  entry.desc    = item['desc']
  entry.status  = item['status']
  entry.time    = datetime.datetime.fromtimestamp(float(item['time']))
  entry.client.add(Client.objects.get(client=item['client']))
  entry.save()

So.. I will give props to Tiago