Add a custom button without close odoo 9 wizard? - odoo

Question

Good day,
I've been working on the lot and serial number module in odoo 9.
I changed the sequence that the module has as default and I substituted it with the generation of an UUID, but when I call this component in the received items part, when I click on the button that generates the UUID the app suddenly returns to the window that I used to call it without letting me to save the UUID that I generated.
Here's my code:
class stock_production_lot(osv.osv):
_name = 'stock.production.lot'
_inherit = ['mail.thread']
_description = 'Lot/Serial'
_columns = {
'name': fields.char('Serial Number', required=True, help="Unique Serial Number"),
'x_num_serie_': fields.char('No. de serie', required=False, help="No. de serie del producto"),
'ref': fields.char('Internal Reference', help="Internal reference number in case it differs from the manufacturer's serial number"),
'product_id': fields.many2one('product.product', 'Product', required=True, domain=[('type', 'in', ['product', 'consu'])]),
'quant_ids': fields.one2many('stock.quant', 'lot_id', 'Quants', readonly=True),
'create_date': fields.datetime('Creation Date'),
}
_defaults = {
'name': lambda x, y, z, c: x.pool.get('ir.sequence').next_by_code(y, z, 'stock.lot.serial'),
'x_num_serie_':None,
'product_id': lambda x, y, z, c: c.get('product_id', False),
}
_sql_constraints = [
('name_ref_uniq', 'unique (name, product_id)', 'The combination of serial number and product must be unique !'),
]
def action_traceability(self, cr, uid, ids, context=None):
""" It traces the information of lots
#param self: The object pointer.
#param cr: A database cursor
#param uid: ID of the user currently logged in
#param ids: List of IDs selected
#param context: A standard dictionary
#return: A dictionary of values
"""
quant_obj = self.pool.get("stock.quant")
quants = quant_obj.search(cr, uid, [('lot_id', 'in', ids)], context=context)
moves = set()
for quant in quant_obj.browse(cr, uid, quants, context=context):
moves |= {move.id for move in quant.history_ids}
if moves:
return {
'domain': "[('id','in',[" + ','.join(map(str, list(moves))) + "])]",
'name': _('Traceability'),
'view_mode': 'tree,form',
'view_type': 'form',
'context': {'tree_view_ref': 'stock.view_move_tree'},
'res_model': 'stock.move',
'type': 'ir.actions.act_window',
}
return False
def action_generate_uuid(self, cr, uid, ids, context=None):
print "< action_generate_uuid >"
_uuid = (uuid.uuid1()).hex
obj = self.browse(cr, uid, ids,context=context)
print "< obj.name >",obj.name
for item in self.browse(cr, uid, ids,context=context):
if item.name:
item.name = _uuid
item.x_num_serie_ = _uuid
print "< name >",item.name
print "< x_num_serie_>",item.x_num_serie_
else:
print "< falta un elemento >"
return None
I'll really appreciate any idea on what is happening and how can I avoid it.
Best regards,
Alain

Answer 1

The default behaviour is to close upon the pressing of any button and execution of the function associated with the button. The work around is to have the button execute a function and then return an action bringing up the exact same wizard.
You can set context to open the wizard again with all the form values populated.
Here is an example:
class MyWizard(models.TransientModel):
_name = 'myaddon.mywizard'
def _get_default_char(self):
return self._context.get('mychar',"")
mychar = fields.Char(string="My Char", default=_get_default_char)
#api.multi
def my_button(self):
# Execute Function Here
# reload wizard with context
return {
'view_type': 'form',
'view_mode': 'form',
'res_model': 'myaddon.mywizard',
'type': 'ir.actions.act_window',
'target': 'new',
'res_id': self.id,
'context': '{"default_mychar":'HELLO WORLD'}',
}