odoo fields

1、domain 筛选 

add = fields.Many2one(
    'product.attribute.value',
 string='ADD',
 domain=lambda self: [('attribute_id.name', '=', 'add')]
)

2、此方法需要修改代码，在单据状态变化的时候，自动推送消息。

threshold_qty_available = fields.Integer(
    string='Quantity Threshold',
 default=False,
 help='set to 0 means no restrict for on hand quantity',
 track_visibility='onchange'
)
3、Selection
frl = fields.Selection(
    string='F/R/L',
 selection=[('frame', 'Frame'),
 ('right', 'Right Lens'), ('left', 'Left Lens'),
 ('right_coating', 'Right Coating'), ('left_coating', 'Left Coating'),
 ('right_tint', 'Right Tint'), ('left_tint', 'Left Tint'),
 ('accessory', 'Accessory'),
 ('unknown', 'Unknown')],
 default='unknown'
)
4、comodel_name
sale_order_line_id = fields.Many2one(
    readonly=True,
 copy=False,
 comodel_name='sale.order.line',
 ondelete='set null',
)