Hi,

At the moment, using the Range validation constraint, we can set up a min & max for a numeric value in an entity property.

Html5 offers min & max attributes for number inputs, so we can also enforce this client-side in any form:

$builder
    ->add('aNumber', 'number', array(
            'attr' => array('min' => 1, 'max' => 100)
    ))

It may be nice to offer min & max options for number field type. It seems pretty logical, as some other fields already have such attributes (ie max_length for text fields).

The syntax may be:

$builder
    ->add('aNumber', 'number', array(
            'min' => 1,
            'max' => 100
    ))

These attributes will be used client-side & the submitted object will be validated too.

What do you think?
I'm ok about contributing the code (& tests & doc), but I wanted the idea to be reviewed first.