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  4. Openerp 7.0开发文档中Fuctional fields的纰漏

Openerp 7.0开发文档中Fuctional fields的纰漏

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  • L Offline
    L Offline
    laoliu
    wrote on last edited by
    #1

    在openerp官方文档中, 以及国内社区流行的开发手册中, 对Fuctional fields是这样描述:
    fnct, arg=None, fnct_inv=None, fnct_inv_arg=None, type="float",fnct_search=None, obj=None, method=False, store=False, multi=False


    其中,如果参数method 指定为true,则fnct和fnct_inv是对象的方法, 其原型为
    def fnct(self, cr, uid, ids, field_name, ....

    而如果参数method指定为False (或不指定,因False为缺省值),则fnct和fnct_inv是全函数,原型为
    def fnct(cr, table, ids, field_name, ...

    然而,在open erp 7.0实现的各个业务模块源码中,我们看到的Fuctional fields没有指定参数method, 而fnct的原型是def fnct(self, cr.... 这种所谓参数method指定为true的方式。难道在openerp 7.0中,参数method的默认值由False 改成了 False了?

    常言说的好, 源码就是最好的文档。 让我们看看实现Fuctional fields的文档吧, 它位于osv/fields.py之中。 源码从第844行开始有连续近200行的注释, 只字未提参数method, 对fnct的原型介绍也修改成了这个样子::

    def fnct(model, cr, uid, ids, field_name, ...
        其中 model: model to which the field belongs (should be self for a model method)


    也就是说, 在openerp 7.0中,定义Fuctional field时 已经不再使用参数method. 不论是对象的方法还是全局函数, fnct的原型都一样了。在openerp官方最新版的技术备忘录中,已经就此做了修改。
    [img http://ww3.sinaimg.cn/bmiddle/53d31817jw1eb403jmq1tj20j60awtap.jpg /img]

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    • T Offline
      T Offline
      thm1118
      wrote on last edited by
      #2

      真棒,我也奇怪method从没看到

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