python函数形参cr有啥作用？就是odoo里面有很多函数的形参都有它

Posted 2023-05-09

def _make_url(self, cr, uid, res_id, model, context=None):如这个函数里面的cr参数

cr变量代表的数据库连接游标
如：cr.execute('select object,name from res_request_link order by priority') 参考技术A 谁也不知道。。。。
只能看函数里面怎么实现的

odoo自动更新表中数据

这是追踪信息用的查询语句，__init__方法初始化作用

_order ="hpartner_id desc"
def init(self,cr):
    tools.sql.drop_view_if_exists(cr, ‘cust_product_info_report‘)
    cr.execute("""
        create or replace view cust_product_info_report as (
           select t0.id,t0.hpartner_id as hpartner_id, t0.khwl_code as khwl_code,t1.product_tmpl_id as productn, t3.cust_spec as cust_spec,t3.material as material ,
           t4.id as name_uom,  t0.custo_price as custo_price,t0.product_meno as product_meno ,t0.meno as meno
            from  product_custo_info t0
            LEFT JOIN product_product t1 on t0.product_tmpl_id=t1.product_tmpl_id
            LEFT JOIN product_template t3 on t3.id=t1.product_tmpl_id
            LEFT JOIN res_partner t2 on t2.id=t0.hpartner_id
            LEFT JOIN product_uom  t4 on  t3.uom_id=t4.id
        )
    """)



判断是否有重复数据复
def create(self, cr, uid, vals, context=None):
    if context is None:
        context = {}
    code= vals.get(‘code‘,‘‘)
    cr.execute("select id from res_partner where  code=‘%s‘" %(code)) 
    if cr.rowcount>0:
        raise osv.except_osv(u‘提示‘,u"[客户/供应商]此简称已经存在！")
    xh=1
    requirement_ids=vals.get(‘requirement_ids‘)
    if requirement_ids:
        for rline in requirement_ids:
            rline[2][‘sequence‘]=xh
            xh=xh+1
    ctx = dict(context or {}, mail_create_nolog=True)
    new_id = super(product_template, self).create(cr, uid, vals, context=ctx)
    return new_id

# 新加地方,执行动作找到对应页面
def action_custorm_state(self, cr, uid, ids, context=None):
    name=self.browse(cr,uid,ids[0],context=context).name
    act_obj = self.pool.get(‘ir.actions.act_window‘)
    mod_obj = self.pool.get(‘ir.model.data‘)
    result = mod_obj.xmlid_to_res_id(cr, uid, ‘ks_sale.action_view_cust_product_info_tree‘,raise_if_not_found=True)
    result = act_obj.read(cr, uid, [result], context=context)[0]
    result[‘domain‘] = "[(‘hpartner_id‘,‘=‘,"+ str(ids[0]) +")]"
    return result