Add (Sum) two values in odoo using onchange function-CodePudding

I have two fields. I want to show the sum of these values in the field 'name' which will be 'readonly'.

I tried like this:

@api.onchange('first_name', 'last_name')
def onchange_name(self):
    if self.first_name or self.last_name:
        self.field_name = self.first_name   self.last_name
        
    #self.name = self.first_name   self.last_name

name = fields.Char(string='Name of the Emplyee', readonly=True, )
first_name = fields.Char(string='First Name')
last_name = fields.Char(string='Last Name')

But it's giving me error: 'TypeError: can only concatenate str (not "bool") to str'.

How can I fix this?

CodePudding user response：

I think, you don't have set a value for your two fields. Basically, if the fields.Char is empty, the value is False.

Try it with a str cast:

    if self.first_name or self.last_name:
        self.field_name = str(self.first_name)   str(self.last_name)

You can also change the "or" operator by "and" to fix it another way.

Regards,

CodePudding user response：

First, you need to check the value of the fields

@api.onchange('first_name', 'last_name')
def onchange_name(self):
    if self.first_name and self.last_name:
        self.name = str(self.first_name) ''  str(self.last_name)
    elif self.first_name and not self.last_name:
        self.name = str(self.first_name)
    elif self.last_name and not self.first_name:
        self.name = str(self.last_name)
    else:
        self.name = None

And remove readonly from the name field and put readonly in the view(.xml) file. so you don't get a 'FALSE' value in the name field.
in Model file (.py)

name = fields.Char(string='Name of the Emplyee')

in view file (.xml)

<field name='name' readonly="1"/>