I'm trying to add message (log an internal note) when user call inherit function.

But my code can't working.

from openerp import models, fields, api, tools
from openerp.tools.translate import _

class res_partner(models.Model):
    
    _inherit = 'res.partner'
    
    STATE_SELECTION = [
        ('draft', 'Request Approval'),
        ('approved', 'Approved'),

    ]
    state = fields.Selection(STATE_SELECTION, 'Status', readonly=True,
                                  help="Request Approval Record "
                                       "Approved Record. ",
                                  select=True,default='draft')

    @api.multi
    def write(self, vals):
        if self.state == 'approved':
            vals.update({'state':'draft'})
            cr = self.env.cr
            uid = self.env.uid
            ids = self.ids
            context = None
            changes = []
            changes.append(_("Record Updated from '%s' to '%s'") %("Approved", "Request Approval"))
            self.message_post(cr, uid, [ids], body=", ".join(changes), context=context)
        return super(res_partner, self).write(vals)

    @api.multi
    def button_approved(self, vals):
        self.write({'state': 'approved'})
        cr = self.env.cr
        uid = self.env.uid
        ids = self.ids
        context = None
        changes = []
        changes.append(_("Record Updated from '%s' to '%s'") %("Request Approval", "Approved"))
        self.message_post(cr, uid, [ids], body=", ".join(changes), context=context)

Error message:

File "/usr/lib/python2.7/site-packages/openerp/service/model.py", line 113, in wrapper
return f(dbname, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/openerp/addons/web/controllers/main.py", line 962, in checked_call
return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/openerp/api.py", line 223, in wrapper
return old_api(self, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/openerp/api.py", line 345, in old_api
result = method(recs, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/openerp/addons/customer_approval/models.py", line 54, in button_approved
self.message_post(cr, uid, [ids], body=", ".join(changes), context=context)
File "/usr/lib/python2.7/site-packages/openerp/api.py", line 221, in wrapper
return new_api(self, *args, **kwargs)
TypeError: message_post() got multiple values for keyword argument 'body'

Any idea or help or solution for this problem?

Thanks and Regards,

Andreas