I have one daught from my custom module .I create one button name as Create Invoice ,when I click on this button form will goes to customer invoicing form ,there customer name is coming automatically from my res.partner form(custom form ie,'ohealth.appointment) ,But in my custom module I am selecting product as service (currently it is many2one,need a one 2many line),that product value is is not coming into my account invoice line ,How to change my code? please need  a help.

Here My customer name(partner_id) is coming in Invoices form but that corresponding product id  line is not coming in invoice line? How can I modify to  code when I click on create invoice button.

 

class OHealthAppointment(osv.Model):
    _name = 'ohealth.appointment'
    _inherit=['mail.thread',]
    _inherits = {'res.partner':'partner_id'}

    _columns = {

        'partner_id': fields.many2one('res.partner', string='Patient'),

        'consultations': fields.many2one('product.product',
                                         string='Consultation Services',
                                          help='Consultation Services'
                                        , domain="[('type', '=', 'service'), ]"),#Here the products, sale price should come on account  invoice line.
       

 

def create_invoice(self, cr, uid, ids, context={}):
        self.write(cr, uid, ids, {'state':'done'} ,context=context)
        """ Create invoice for Tour payment process of Customers """
                  
        invoice_pool = self.pool.get('account.invoice')

        default_fields = invoice_pool.fields_get(cr, uid, context=context)
        invoice_default = invoice_pool.default_get(cr, uid, default_fields, context=context)

        for student in self.browse(cr, uid, ids, context=context):

            onchange_partner = invoice_pool.onchange_partner_id(cr, uid, [], type='out_invoice',\
                                partner_id=student.partner_id.id)
            invoice_default.update(onchange_partner['value'])

            invoice_data = {

                            'partner_id': student.partner_id.id,  #only customer name is coming in the invoice form
                            'date_invoice': time.strftime('%Y-%m-%d'),#I need to add what product I select                  

                    # like(if  i select a service prodcut then its price should come on the invoice line,right #now only customer name is coming how to change my code)
                        
                           
                           # 'payment_term': student.standard_id.payment_term and student.standard_id.payment_term.id or student.course_id.payment_term and student.course_id.payment_term.id or False,
                            }
            
        invoice_default.update(invoice_data)
        invoice_id = invoice_pool.create(cr, uid, invoice_default, context=context)
        
        models_data = self.pool.get('ir.model.data')
        form_view = models_data.get_object_reference(cr, uid, 'account', 'invoice_form')
        tree_view = models_data.get_object_reference(cr, uid, 'account', 'invoice_tree')
        value = {
                'domain': str([('id', '=', invoice_id)]),
                'view_type': 'form',
                'view_mode': 'form',
                'res_model': 'account.invoice',
                'view_id': False,
                'views': [(form_view and form_view[1] or False, 'form'),
                          (tree_view and tree_view[1] or False, 'tree')],
                'type': 'ir.actions.act_window',
                'res_id': invoice_id,
                'target': 'current',
                'nodestroy': True
            }
        return value

 

.xml---------

<button name="create_invoice" string="Create Invoice"
                                type="object" icon="gtk-apply" states="confirm,waiting,in_

consultation,done" class="oe_highlight" />  

Thanks for your valuable answers, I changed the  code as you mentioned above,After but the product price and other details are not coming in the invoice line.How to change my code