Oi Federico,

Tray the code below. You may iterate the variables if there are a list in place of object's fields.

<t t-set="finaltext" t-value="obj.yourvariable1+' #'+obj.yourvariable2+', #'+obj.yourvariable3 "/>

<span t-esc="finaltext"/>

 @api.model

def create(self, vals):

if vals['fname']:

fname = vals['fname'].title()

else:

fname = ''

if vals['lname']:

lname = vals['lname'].title()

else:

lname = ''

name = "{}, {}".format(lname, fname,)

print 'name', name

vals['name'] = name

vals['fname'] = fname

vals['lname'] = lname

if 'address_id' in vals:

res_id = super(HrEmployee, self).create(vals)

return res_id

fname is your firstname and lname is your lastname, Try this on your python file

Is possible to do the same thing with strings from a a single field (in my case product.id from pos.order)? 

I would like to concatenate every code starting with '#' between the codes starting with [internal reference].

Normal view:

[0001] product1
# product instructions 1
# product instructions 2 

[0002] product2
# product instructions 1 
# product instructions 2 

Should appear as :

[0001] product1    # product instructions 1 , # product instructions 2

[0002] product2    # product instructions 1 , # product instructions 2

Is it possible with the same principle directly on xml? I don't need to store information (for now) is just another rappresentation.