I am trying to write a basic module which takes in animal names from a user and displays them as a list.

But when I try to install the module in Odoo, I get the following error:

File "/home/shubhada/workspace/odoo/odoo/openerp/models.py", line 2919, in _inherits_reload cls._add_field(attr, column.to_field()) AttributeError: 'Char' object has no attribute 'to_field'

Here is my content of vetclinic.py file:

from openerp import models,fields

class vetclinic_animal(models.Model):
    _name="vetclinic.animal"
    _columns={
              'name':fields.Char('Name',size=64),
              'birthdate':fields.Date('Birth Date')}

I have tried writing the same file as:

     from openerp import models, fields

     class vetclinic_animal(models.Model):
         _name = "vetclinic.animal"
 
         name = fields.Char(string='Name', required=True) #Try this code
         birthdate = fields.Date('Birth Date')

I can't figure out what's gone wrong. Can someone please help me?