calculate age from birthdate in odoo

ODOO 

here we know the birth date of the user (birth_date) and we want to calculate his age so let's do it 

• add the birth date field and age field in your model as 

birth_date = fields.Date(string="Birth Date")

age_year = fields.Float(string="Years", compute='calculate_age')

age_month = fields.Float(string="Months", compute='calculate_age') 

age_day = fields.Float(string="Days", compute='calculate_age')

 

• the add calculate_age() function to calculate the age and store it in age field 

@api.one 
def calculate_age(self):

        """

        function to calcolate the age of he user

        """

        if self.birth_date :

            birth_date = str(self.birth_date)

            current_date = str(fields.Date.today())

            birth_date_year_as_int =     int(birth_date[0]+birth_date[1]+birth_date[2]+birth_date[3])

            birth_date_month_as_int = int(birth_date[5]+birth_date[6])

            birth_date_day_as_int = int(birth_date[8]+birth_date[9])

            current_date_year_as_int = int(current_date[0]+current_date[1]+current_date[2]+current_date[3])

            current_date_month_as_int = int(current_date[5]+current_date[6])

            current_date_day_as_int = int(current_date[8]+current_date[9])

            period_years = current_date_year_as_int-birth_date_year_as_int

            period_months = current_date_month_as_int-birth_date_month_as_int

            period_days = current_date_day_as_int-birth_date_day_as_int

            months_list_1 = ['04','06','09','11']

            months_list_2 = ['01','03','05','07','08','10','12']

            if period_days < 0:

                if str(current_date_month_as_int) == '02':

                    if current_date_year_as_int%4 == 0:

                        period_days = 29+period_days

                    if current_date_year_as_int%4 != 0:

                        period_days = 28+period_days

                for index in range(0,4):

                    if current_date_month_as_int == int(months_list_1[index]):

                        period_days = 30+period_days

                for index in range(0,7):

                    if current_date_month_as_int == int(months_list_2    [index]):

                        period_days = 31+period_days

                period_months = period_months-1

            if period_months < 0:

                period_months = 12+period_months

                period_years = period_years-1

            self.age_year = period_years

            self.age_month = period_months

            self.age_day = period_days