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无奈之下刚刚重启了server，刷新，再安装，居然成了～～～感谢感谢～～

搞两天居然还没搞定这个，信心受打击了呀～请大大帮忙则个：

init.py
# -- encoding: utf-8 --
import lesson

openerp.py
{
    "name" : "OECN Training", #模块名
    "version" : "1.0", #模块版本
    "description" : "OCEN training Demo", #说明
    "author" : "xmbcit", #作者
    "website" : "http://www.xmbcit.net", #网站
    "depends" : [], #依赖
    "data" : ["lesson_view.xml"],#读入的文件
    "installable" : True, #可安装
    "category" : "Generic Modules/Others" #类型
}


lesson.py
# -- coding: utf-8 --
from openerp.osv import fields, osv

class oecn_training_lesson(osv.osv):
    _name = 'oecn.training.lesson'
    _discription = 'OECN 培训课程'
    _columns = {
    'name':fields.char( u'课程名',size=64,select=True),
    'date_start':fields.date(u'开始日期',select=True),
    'total_day':fields.float(u'总天数',digits=(16,1)),
    'teacher':fields.many2one('res.users',u'授课老师'),
    'students':fields.many2many('res.partner',string=u'学生'),
    'price':fields.float(u'价格',digits=(16,2)),
    }
oecn_training_lesson()


lesson_view.xml
<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
    <!--定义表单视图-->
        <record model="ir.ui.view" id="oecn_training_lesson_from_view">
            <field name="name">课程表单</field>
            <field name="type">form</field>
            <field name="model">oecn.training.lesson</field>
            <field name="arch" type="xml">
                <form string="课程表单">
                    <field name="name"/>
                    <field name="date_start"/>
                    <field name="total_day"/>
                    <field name="price"/>
                    <field name="teacher"/>
                    <field name="students" colspan="4"/>
                </form>
            </field>
        </record>
        <!--定义列表视图-->
        <record model="ir.ui.view" id="oecn_training_lesson_tree_view">
            <field name="name">课程列表</field>
            <field name="type">tree</field>
            <field name="model">oecn.training.lesson</field>
            <field name="arch" type="xml">
                <tree string="课程列表">
                    <field name="name"/>
                    <field name="date_start"/>
                    <field name="teacher"/>
                    <field name="price" sum="合计"/>
                </tree>
            </field>
        </record>
<!--定义视图动作-->
    <record model="ir.actions.act_window"  id="action_oecn_training_lesson">
        <field name="name">课程</field>
        <field name="res_model">oecn.training.lesson</field>
        <field name="view_type">form</field>
        <field name="view_mode">form,tree</field>
        <field name="view_id" ref="oecn_training_lesson_tree_view"/>
    </record>
<!--定义菜单-->
    <menuitem id="oecn_menu" name="OECN"/>
    <menuitem id="oecn_training_menu" name="OECN Training" parent="oecn_menu"/>
    <menuitem id="oecn_training_lesson_menu" name="OECN Training Lesson" parent="oecn_training_menu" action="action_oecn_training_lesson"/> 
</data>
</openerp>

Joshua版主请赐教：
init.py中不是写 import python文件名么？应该写类名？

按照此例：<br / [检测到链接无效，已移除] br />编写的模块，在7.0安装时遇到错误：
File "/usr/lib/pymodules/python2.7/openerp/addons/base/ir/ir_ui_view.py", line 126, in _check_render_view
    fvg = self.pool.get(view.model).fields_view_get(cr, uid, view_id=view.id, view_type=view.type, context=cont$
AttributeError: 'NoneType' object has no attribute 'fields_view_get'
2013-07-30 07:03:04,529 20870 ERROR bsec openerp.tools.convert: Parse error in /opt/openerp/addon/oecn_training$
<record model="ir.ui.view" id="oecn_training_lesson_from_view">
            <field name="name">&#35838;&#31243;&#34920;&#21333;</field>
            <field name="type">form</field>
            <field name="model">oecn.training.lesson</field>
            <field name="arch" type="xml">
                <form string="&#35838;&#31243;&#34920;&#21333;">
                    <field name="name"/>
                    <field name="date_start"/>
                    <field name="total_day"/>
                    <field name="price"/>
                    <field name="teacher"/>
                    <field name="students" colspan="4"/>
                </form>
            </field>
        </record>
验证字段 arch 时发生错误：Invalid XML for View Architecture!
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 292, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 626, in dispatch
    res = fn(db, uid, *params)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 188, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 144, in wrapper
    raise except_osv(inst.name, inst.value)

错误的核心有两处，
一是
AttributeError: 'NoneType' object has no attribute 'fields_view_get'
此错误在launchpad上能找到相关的bug：<br / https://www.google.com.hk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CEAQFjAC&url=https%3A%2F%2Fbugs.launchpad.net%2Fbugs%2F1077794&ei=Kmj3UY2eEsmXkwWuuoDIDg&usg=AFQjCNFzGWu7j6hd-wpbZMKINCIFL_2Bag br /> 明确说明此错误描述本身不清晰，应该是对象不存在导致xml结构验证错误，
二是
验证字段 arch 时发生错误：Invalid XML for View Architecture!
此位置一再验证无法看到错误，且有一的bug描述，应该不是根本原因。

数据库中确实没有我新增的oecn.training.lesson表存在。。。

新手，受益匪浅～