无法添加计算方法

Question

问题很简单，我只需要创建一个计算字段。这就是我所拥有的：

class MyModel(models.Model):
    _name = 'my.model'

    a = fields.Float()
    b = fields.Float()
    value = fields.Float(compute='_compute_value')

    @api.depends('a','b')
    def _compute_value(self):
        for record in self:
            record.value = a/b

但是，当我想从数据库上的web浏览器检查它时，我发现它没有添加到计算中。

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( compute在法语中代表空的compute)

问题可能是什么？

Answer 1

要创建my.model字段，Odoo将执行以下查询：

INSERT INTO ir_model_fields (model_id,model,name,field_description,help,ttype,state,relation,index,store,copied,on_delete,related,readonly,required,selectable,size,translate,relation_field,relation_table,column1,column2,track_visibility) 
VALUES 
(390, 'my.model', 'a', 'A', NULL, 'float', 'base', NULL, false, true, true, NULL, NULL, false, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'b', 'B', NULL, 'float', 'base', NULL, false, true, true, NULL, NULL, false, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'value', 'Value', NULL, 'float', 'base', NULL, false, false, false, NULL, NULL, true, false, false, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'id', 'ID', NULL, 'integer', 'base', NULL, false, true, true, NULL, NULL, true, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'display_name', 'Display Name', NULL, 'char', 'base', NULL, false, false, false, NULL, NULL, true, false, false, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'create_uid', 'Created by', NULL, 'many2one', 'base', 'res.users', false, true, true, 'set null', NULL, true, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'create_date', 'Created on', NULL, 'datetime', 'base', NULL, false, true, true, NULL, NULL, true, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'write_uid', 'Last Updated by', NULL, 'many2one', 'base', 'res.users', false, true, true, 'set null', NULL, true, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', 'write_date', 'Last Updated on', NULL, 'datetime', 'base', NULL, false, true, true, NULL, NULL, true, false, true, NULL, false, NULL, NULL, NULL, NULL, NULL),
(390, 'my.model', '__last_update', 'Last Modified on', NULL, 'datetime', 'base', NULL, false, false, false, NULL, NULL, true, false, false, NULL, false, NULL, NULL, NULL, NULL, NULL) RETURNING id

您可以看到compute不在列名中。其值未存储在数据库中