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2011-01-31T14:55:17.160
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<p>I'm a bit confused as to what you are attempting to do. However, I would suggest, if possible, that you make use of the forms library included with Django instead of rendering a bunch of form elements manually in the template. Here is an example of a simple form with custom/dynamic choices rendered as checkboxes.</p> <pre><code>>>> class CheckboxForm(forms.Form): ... items = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple) ... >>> choices = (('item-1', 'This is item 1'), ('item-2', 'This is item 2'), ('item-3', 'This is item 3')) >>> form = CheckboxForm(initial={'items':('item-2',)}) >>> form.fields['items'].choices = choices >>> print form['items'] <ul> <li><label for="id_items_0"><input type="checkbox" name="items" value="item-1" id="id_items_0" /> This is item 1</label></li> <li><label for="id_items_1"><input checked="checked" type="checkbox" name="items" value="item-2" id="id_items_1" /> This is item 2</label></li> <li><label for="id_items_2"><input type="checkbox" name="items" value="item-3" id="id_items_2" /> This is item 3</label></li> </ul> >>> </code></pre> <p>Notice that 'initial' kwarg given to the form constructor has a key for the 'items' field, which should be an iterable of IDs of the elements to be checked by default. You can see that 'item-2' is given as the 'initial' value for the 'items' field, and in the resulting HTML display, 'item-2' is checked. So by customizing this 'initial' argument you can specify which of the items are checked initially on your page.</p> <p>If you use Django forms, you can also validate the submitted form data easily. You don't need to give the form 'initial' when binding it to input data, since it doesn't matter what items were/are initially selected.</p> <pre><code># valid submission >>> form = CheckboxForm({'items':('item-2',)}) >>> form.fields['items'].choices = choices >>> print form.is_valid() True >>> print form.cleaned_data {'items': [u'item-2']} # invalid submission, 'item-4' does not exist in the field choices >>> form = CheckboxForm({'items':('item-4',)}) >>> print form.is_valid() False </code></pre> <p>Note: You could also setup a custom constructor on the form and pass the choices into that instead of setting the field.choices after the form is created.</p>
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1. COI am using django forms. I have not uploaded my views. I also have a checklist already. I have a template which list items. From this template I want to be able to add an item. Now when I mean by adding an item I do not mean by creating a form. I mean, going to a page that list all existing clients item (I have this template). In this template there is a list where you can select which existing item to add. The thing that I have a problem with is the checkboxes. They are all 'ticked' in my code for some reason. I want the items in the template items list to be ticked, and the blank.
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