How to set an event handler in a Django form input field
What I do for that is :
class MyForm(forms.Form):
stuff = forms.ChoiceField(
[('a','A'),('b','B')],
widget = forms.Select(attrs = {
'onclick' : "alert('foo !');",
}
)
I would recommend looking at using a JavaScript library such as jQuery. Here is the link to binding the click event in jQuery. Since Django names all of the input fields you can connect my_field_name
in your Django form to the click event like so:
$("form input[name='my_field_name']").click(function () {
// Handle the click event here
});
If you are looking for automating this process, you can create a custom widget for the field. In the widget class you will define a render method in such a way that it will also return the event binding code.
class CustomWidget(forms.TextInput):
class Media:
#js here
js = ('js/my_js.js',)
def render(self, name, value, attrs = None)
output = super(CustomWidget, self).render(name, value, attrs)
#do what you want to do here
output += ...
return output