Hi,

You can check the function named view_init. ​

In your odoo directory you can find the description of this function from the file odoo->models.py.

@api.model
def view_init(self, fields_list):
    """ Override this method to do specific things when a form view is
    opened. This method is invoked by :meth:`~default_get`.
    """
    pass

Just write/super this function in your required model and you do the required operations in this function

Hope it helps

def read(self, fields=None, load='_classic_read'): 

	​res = super(MyModel, self).read(fields=fields, load=load) 

	​//custom code

​return res