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copied!<p>Trying building your queryset using the pythons union operator -</p> <pre><code>class PrimaryCategoryForm(forms.ModelForm): set_1 = PrimaryAdCategoryType.objects.filter(pk=2) set_2 = PrimaryAdCategoryType.objects.filter(pk=3) qs = set_1 | set_2 primarycategorytype = forms.ModelMultipleChoiceField(queryset=qs, required=True, widget=forms.CheckboxSelectMultiple) </code></pre> <p>The <code>|</code> operator is creating a new set with all items from <code>set_1</code> and all items from <code>set_2</code>. </p> <p>UPDATE</p> <p>Whilst the method above will support creating complicated sets. Martin's suggestion in the comments is probably sufficient if you simply want to pick a few pk's -</p> <pre><code>class PrimaryCategoryForm(forms.ModelForm): qs=PrimaryAdCategoryType.objects.filter(pk__in=[2,3]) primarycategorytype = forms.ModelMultipleChoiceField(queryset=qs, required=True, widget=forms.CheckboxSelectMultiple) </code></pre> <p>EDITABLE CHECKBOXES</p> <p>I think when it comes to making the checkboxes editable and preselected you may need to resort to javascript. Perhaps <a href="https://docs.djangoproject.com/en/dev/ref/forms/widgets/#django.forms.Widget.attrs" rel="nofollow">add data-attributes to the widget</a>, then create a jquery function that manipulates the checkboxes on the basis of the data-attributes. Something like -</p> <pre><code>attrs = {'data-selected-value': 2, 'data-readonly-value': 2} primarycateogrytype = forms.ModelMultipleChoiceField(attrs=attrs) </code></pre> <p>Then in the javascript -</p> <pre><code>var readonlyCheckboxValue = $('#your_mulliplecheckboxselect).data('selected-value'); var $readonlyCheckbox = $('#your_multiplecheckboxselect .input[value=readonlyCheckboxValue]'); $readonlyCheckbox.attr('readonly', true); </code></pre> <p>I haven't tested this code, but it should give you an idea of what I'm suggesting. Do check out the <a href="http://www.w3.org/TR/2010/WD-html5-20101019/elements.html#embedding-custom-non-visible-data-with-the-data-attributes" rel="nofollow">data-attribute</a> if you haven't come across it already - it's pretty awesome.</p>

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