I have a module that depends on account and inherit from invoice.py so i wish to work on the invoice with the use of a button in this new module. I tried creating it but my view points to process transition view. please check

Are you getting any error? if yes then past your error here.

no there is no error but what my view should be it is not like that. I have only a button on my view and when i click on the menu of my module process transition view appears. I don't understand why or probably the module without columns is not possible!

please post your code over here.

class demo(osv.osv): _name = 'demo' # _inherit = 'account.invoice'

def test_fun(self, cr, uid, ids,context):
    res = {}
    amount = 100
    raise orm.except_orm(_('Fees amount'), str(amount))
    return True

demo()