OpenERP-只读字段在“打开”时不保存；“保存”；按钮按下了

在一个视图中，我将字段“default_code”替换为同名字段。当我将此字段设置为只读时，单击“保存”按钮时不会保存该字段。它应该被保存。以下是整个视图的代码：

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="product_config_form_view" model="ir.ui.view">
            <field name="name">product.config.form.view</field>
            <field name="model">product.template</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="mrp.product_template_form_view_bom_button" />
            <field name="arch" type="xml">
                <label for="name" position="replace">
                    <label for="name" invisible="1"/>
                </label>
                <field name="name" position="replace">                      

                    <div style="font-size:10pt;">
                        <label for="class_id" string="Item Class" />
                    </div>
                    <div style="font-size:10pt;">
                        <field name="class_id" colspan="3" nolabel="1" on_change="onchange_class_id(class_id)"
                        /> </div> 
                    <div style="font-size:10pt;">
                        <label for="name" string="Item Description"/>
                    </div>
                    <div style="font-size:10pt;" >
                        <field name="name" colspan="3" nolabel="1"/>
                    </div>

                </field>

                <field name="default_code" position="replace" >
                    <field name="default_code" string="Item Number" /> 
                </field>

                <xpath expr="//notebook/page[@string='Accounting']/group" position="replace">
                </xpath>
            </field>        
        </record>

        <record id="product_config_tree_view" model="ir.ui.view">
            <field name="name">product.config.tree.view</field>
            <field name="model">product.class</field>
            <field name="type">tree</field>
            <field name="arch" type="xml">
                <tree string="Product">
                    <field name="default_code" string="Class ID" colspan="3" nolabel="1" />                         
                    <field name="name" string="Class Description" colspan="3" nolabel="1"/>                     
                </tree>
            </field>          
        </record>    

        <record id="class_search_view" model="ir.ui.view">
            <field name="name">class.search.view</field>
            <field name="model">product.class</field>
            <field name="arch" type="xml">
                <search string="Class">
                    <field name="name" string="Class Description" filter_domain="['|',('default_code','ilike',self),
                    ('name','ilike',self)]" />                                
                </search>
            </field>
        </record>

    </data>
</openerp>

---

变通办法。我已经通过使用一个函数字段（invisible=False，readonly=True）解决了这个问题，该字段使用默认的\u代码（并模仿视图中的项目编号）进行了更新，我将原始的默认\u代码设置为readonly True和invisible True，以便将其保存在数据库中

也许对你有帮助。我以前读过这篇文章，它不能解决我的问题。谢谢。不，我没有，因为我不确定在哪里输入那段代码。好的，我找到了插入补丁的地方，它成功了。但是，修补程序代码将被新的OpenERP版本代码覆盖。我说的对吗？还有其他方法吗，比如过度隐藏write（）或create（）函数？

class product_product(osv.Model):
    _inherit = 'product.product'

    def create(self, cr, uid, vals, context=None):
        # raise osv.except_osv(_(u'TitleMessage'), _(u'Inside Create'))
        code = vals.get('default_code')
        vals.update({'default_code': code})
        print "\n\nCreate Value=> ",vals
        return super(product_product, self).create(cr, uid, vals, context)


    def write(self, cr, uid, ids, vals, context=None):
        # raise osv.except_osv(_(u'TitleMessage'), _(u'Inside Write'))
        print "\n\n\nCurrent Values =>", valswrite
        code = vals.get('default_code')
        print "\n\nWrite Value=> ",vals
        vals.update({'default_code': code}) 
        return super(product_product, self).write(cr, uid, ids, vals, context)