django - how to add data into ManyToManyField? -

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I can not find it anywhere, so your help will be good for me :) Here's the field:

categories = models.ManyToManyField (fragmentCategory)

fragment category: 

  category category (models.Model): CATEGORY_CHOICES = ('Val1', 'value1'), ('val2', 'value2'), ('val3', 'value3'), name = model.ccarfield (max_length = 20, options = CATEGORY_CHOICES)

Here's a type of sending: 

   & Lt; Input type = "checkbox" name = "val2" /> & Lt; Input type = "checkbox" name = "val3" />

I tried to do something like this: 

  categories = fragment category.objects.get (id = 1),

or: 

  categories = [1,2]

A complete page of the Django documentary is well-indexed from the content page.

According to that page, you have to: 

  my_obj .categories.add (fragmentCategory.objects.get (id = 1))

or 

  my_obj.categories.create (name = 'val1')

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