当on_change事件修改只读字段时，只读字段不写入数据库

Question

我将heat_degree_day和hw_degree_day设置为只读，因此用户不能直接修改它们。

我有一个on_change事件，根据用户输入的其他字段修改它们。

当用户输入当天的高温和低温时，度日字段正在被正确修改;但是，当我单击保存按钮时，度数字段将恢复到原始值。

我假设这是因为我在视图中将它们设置为只读。

我认为必须有一个共同的方法来解决这个问题，但我没有在文档中找到它。

degree_day.py

from openerp.osv import osv, fields
from dateutil.parser import *
from dateutil.tz import *
from datetime import *

class degree_day(osv.osv):
_name = "degree.day"
_columns={
    'date': fields.date('Date'),
    'high_temp': fields.integer('High Temp'),
    'low_temp': fields.integer('Low Temp'),
    'heat_degree_day': fields.integer('Heat Degree Day' ),
    'hw_degree_day': fields.integer('Hot Water Degree Day' ),
    'debug':fields.text('Debug text'),
}
def write(self, cr, uid, ids, vals, context=None):
    dd_recs = self.pool.get('degree.day')
    low_temp = dd_recs.read(cr, uid, ids[0], ["low_temp"])["low_temp"]
    high_temp = dd_recs.read(cr, uid, ids[0], ["high_temp"])["high_temp"]
    a = 65 - ((high_temp + low_temp)/2)
    if a < 0:
        a = 0
    vals['heat_degree_day'] = a
    vals['hw_degree_day'] = a + 5
    return super(degree_day, self).write(cr, uid, ids, vals, context=context)
def generate_degree_day(self, cr, uid, ids, high_temp, low_temp, date, debug, context=None):
    """ calculates heat degree day and hot water degree day when high or low temp is changed
    @param high_temp: The day's high temperature
    @param low_temp: The day's low temperature
    """
    v={}
    debug = "... "
    # check to see that args are not null
    if (high_temp and low_temp and date):
        debug += "args present:"
        adate = parse(date)
        day_before = adate - timedelta(days=1)
        dd_recs = self.pool.get('degree.day')
        # were any degree.day records retrieved?
        if dd_recs:
            debug += " dd_recs not null:" 
            ids = dd_recs.search(cr, uid, [("date", "=", day_before)])
            # is there a record for yesterday?
            if ids:
                debug += " ids not null:"
                last_hdd = dd_recs.read(cr, uid, ids[0], ["heat_degree_day"])
                last_hwdd = dd_recs.read(cr, uid, ids[0], ["hw_degree_day"])
                # degree day calculation
                a = 65 - ((high_temp + low_temp)/2)
                if a < 0:
                    debug += " a<0:"
                    a = 0
                v['heat_degree_day'] = last_hdd["heat_degree_day"] + a
                v['hw_degree_day'] = last_hwdd["hw_degree_day"] + a + 5
    v['debug'] = debug
    return {'value':v}

degree_day_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
    <record id="degree_day_tree" model="ir.ui.view">
        <field name="name">degree.day.tree</field>
        <field name="model">degree.day</field>
        <field name="arch" type="xml">
            <tree string="Degree Day List">
                <field name="date"  />
                <field name="high_temp" />
                <field name="low_temp" />
                <field name="heat_degree_day"  /> 
                <field name="hw_degree_day" />
                <field name="debug" />
            </tree>
        </field>
    </record>
    <record id="degree_day_form" model="ir.ui.view">
        <field name="name">degree.day.form</field>
        <field name="model">degree.day</field>
        <field name="arch" type="xml">
            <form string="Degree Day" version="7.0">
                <sheet string="Degree Day">
                    <h1>Day <field name="date" class="oe_inline"/></h1>
                    <group>
                        <field name="low_temp" on_change="generate_degree_day(high_temp, low_temp, date, debug)" />
                        <field name="high_temp" on_change="generate_degree_day(high_temp, low_temp, date, debug)" />
                    </group>
                    <group>
                        <field name="heat_degree_day" readonly="True" />
                        <field name="hw_degree_day" readonly="True"  />
                    </group>
                    <field name="debug" />
                </sheet>
            </form>
        </field>
    </record>
    <record id="show_degree_day" model="ir.actions.act_window">
        <field name="name">Degree Day</field>
        <field name="res_model">degree.day</field>
        <field name="view_type">form</field>
        <field name="view_mode">tree,form</field>
    </record>

    <menuitem name="Degree Day" id="menu_degree_day" action="show_degree_day"/>
</data>
</openerp>

Answer 1

由于只读原因，我们必须在"write method"中写入这两个字段，只需在您的类中使用此方法:

     def write(self, cr, uid, ids, vals, context=None):
         if vals.has_key('high_temp') and vals['low_temp']:
           a = (high_temp + low_temp)/2 - 65
           if a < 0:
              a = 0
          vals['heat_degree_day'] = a
          vals['hw_degree_day'] = a + 5
     return super(degree_day, self).write(cr, uid, ids, vals, context=context)

Answer 2

我将Anup提交的代码修改如下这工作。如果你认为我这样做是不合适的，请让我知道。编辑:这是最终版本，还为.create添加了等效的代码来覆盖新记录

def write(self, cr, uid, ids, vals, context=None):
    if vals.has_key('high_temp') and vals.has_key('low_temp'):
        high_temp = vals['high_temp']
        low_temp = vals['low_temp']
        a = 65 - ((high_temp + low_temp)/2)
        if a < 0:
            a = 0
        vals['heat_degree_day'] = a
        vals['hw_degree_day'] = a + 5
    return super(degree_day, self).write(cr, uid, ids, vals, context=context)
def create(self, cr, uid, vals, context=None):
    if vals.has_key('high_temp') and vals.has_key('low_temp'):
        high_temp = vals['high_temp']
        low_temp = vals['low_temp']
        a = 65 - ((high_temp + low_temp)/2)
        if a < 0:
            a = 0
        vals['heat_degree_day'] = a
        vals['hw_degree_day'] = a + 5
    return super(degree_day, self).create(cr, uid, vals, context=context)