newforms

I recently started working with React and I faced the problem with inputs validation. For example, it simply implemented in another framework as Angular.js via directives. After some researching I found newforms library, looks like the best solution from the box on current moment. But it's pretty heavy and not sure that it's currently supported (last update 7 months ago). Another approach is sending events from parent form to its children inputs, and calling validation method on each. But I could not find the best practices everyone tries to invent something own and as a result you need to

I need some way to add a class attribute to the output of the label_tag() method for a forms field. I see that there is the ability to pass in an attrs dictionary and I have tested it in the shell and I can do something like: for field in form: print field.label_tag(attrs{'class':'Foo'}) I will see the class='Foo' in my output, but I don't see a way to add an attrs argument from the template - in fact, templates are designed specifically against that, no? Is there a way in my form definition to define the class to be displayed in the label? In the form, I can do the following to give the