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copied!<blockquote> <p>Is there a way to override this behaviour and let the action run anyway?</p> </blockquote> <p>I'm going to say no there is no easy way.</p> <p>If you grep your error message, you see that the code is in <code>django.contrib.admin.options.py</code> and the problem code is deep inside the changelist_view.</p> <pre><code>action_failed = False selected = request.POST.getlist(helpers.ACTION_CHECKBOX_NAME) # Actions with no confirmation if (actions and request.method == 'POST' and 'index' in request.POST and '_save' not in request.POST): if selected: response = self.response_action(request, queryset=cl.get_query_set()) if response: return response else: action_failed = True else: msg = _("Items must be selected in order to perform " "actions on them. No items have been changed.") self.message_user(request, msg) action_failed = True </code></pre> <p>It's also used in the <code>response_action</code> function as well, so you can't just override the changelist_template and use that either -- it's going to be easiest to define your own action-validity checker and runner.</p> <hr> <p>If you really want to use that drop down list, here's an idea with no guarantees.</p> <p>How about defining a new attribute for your selection-less admin actions: <code>myaction.selectionless = True</code></p> <p>Copy the <code>response_action</code> functionality to some extent in your overridden <code>changelist_view</code> that only works on actions with a specific flag specified, then returns the 'real' <code>changelist_view</code></p> <pre><code> # There can be multiple action forms on the page (at the top # and bottom of the change list, for example). Get the action # whose button was pushed. try: action_index = int(request.POST.get('index', 0)) except ValueError: action_index = 0 # Construct the action form. data = request.POST.copy() data.pop(helpers.ACTION_CHECKBOX_NAME, None) data.pop("index", None) # Use the action whose button was pushed try: data.update({'action': data.getlist('action')[action_index]}) except IndexError: # If we didn't get an action from the chosen form that's invalid # POST data, so by deleting action it'll fail the validation check # below. So no need to do anything here pass action_form = self.action_form(data, auto_id=None) action_form.fields['action'].choices = self.get_action_choices(request) # If the form's valid we can handle the action. if action_form.is_valid(): action = action_form.cleaned_data['action'] select_across = action_form.cleaned_data['select_across'] func, name, description = self.get_actions(request)[action] if func.selectionless: func(self, request, {}) </code></pre> <p>You'd still get errors when the 'real' action is called. You could potentially modify the request.POST to remove the action IF the overridden action is called. </p> <p>Other ways involve hacking way too much stuff. I think at least.</p>

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