openerp学习笔记 自定义小数精度（小数位数）

小数位数标识定义：

lx_purchase/data/lx_purchase_data.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data noupdate="1">

        <record forcecreate="True" id="decimal_payment" model="decimal.precision">
            <field name="name">lx_purchase_price</field>
            <field name="digits">2</field>
        </record>

    </data>
</openerp>

小数位数标识引用：

lx_purchase/lx_purchase.py

class lx_purchase_order_line(osv.osv):

    def _amount_line(self, cr, uid, ids, prop, arg, context=None):
        res={}
        for line in self.browse(cr,uid,ids,context=context):
            a=self.read(cr,uid,line.id,["price","product_qty"])
            res[line.id]=a["price"]*a["product_qty"]
        return res

    _name='lx.purchase.order.line'
    _description=u"lx采购单明细"
    _columns={
        'order_id':fields.many2one('lx.purchase.order',u'采购单ID',select=True, ondelete='cascade'),
        'product':fields.char(u'产品',size=128,required=True),
        'price':fields.float(u'价格', digits_compute = dp.get_precision('lx_purchase_price'), required=True),
        'product_qty':fields.integer(u'数量',required=True),
        'unit': fields.char(u'计量单位',size=6),
        'subtotal':fields.function(_amount_line, string=u'小计', digits=(18, 2)),
    }
    _defaults={
        'product_qty': lambda *a: 1.0,
    }

lx_purchase_order_line()

自定义小数位数需引用的模块：

lx_purchase/__openerp__.py

    'depends' : ['base', 'hr', 'process', 'decimal_precision'], #依赖的模块
    'data' : [
        'security/purchase_security.xml',
        'security/ir.model.access.csv',
        'data/lx_purchase_data.xml',
        'lx_purchase_view.xml',
        'lx_purchase_sequence.xml',
        'lx_purchase_workflow.xml',
        'lx_purchase_report.xml'
                    ], #模块安装、更新的时候会读入的文件