Django1.5python2.7 -how显示和更新包含3个外键的数据库

Question

问题:我有一个有3个外键的数据库，每天我都要收集用户的输入，规则如下；

1. 如果今天的日期在db中已经有数据，那么检索并显示数据。数据将产生多行，但每一行都是基于3个外键(产品、分支、merge_version )和date_created (auto_add=True)唯一查询的。
2. 如果查询没有返回任何内容，则使用类实例创建一个对象并显示空行。
3. 如果用户单击一个单一的提交按钮，数据应在数据库中使用以下规则进行更新；

- For each row submitted, validate if there is already an existing row present in database, if there is a row, update the row, else create a new row

​

我尝试在for循环中为每个产品创建多个表单实例，并将字典发送到模板页面，它将显示行，不会出现任何问题。

当我单击submit时，只保存最后一行数据，因为request.POST返回以下输出；

    QueryDict: {u'build_date': [u'2013-10-11', u'2013-10-11', u'2013-10-11', u'2013-10-11', u'2013-10-11', u'2013-10-11', u'2013-10-11', u'
    2013-10-11'], u'cln': [u'5555', u'2222', u'2222', u'2222', u'2222', u'2222', u'2222', u'090909'], u'logs': [u'no logs', u'no logs', u'no logs', u'no logs', u'no logs', u'n
    o logs', u'no logs', u'no logs'], u'rpmt_status': [u'R', u'R', u'R', u'R', u'R', u'R', u'R', u'R'], u'rpmt_result': [u'F', u'F', u'F', u'F', u'F', u'F', u'F', u'F'], u'com
    ments': [u'hghjg', u'hghjg', u'hghjg', u'hghjg', u'hghjg', u'hghjg', u'hghjg', u'hghjg'], u'cbs_other_bugs': [u'666', u'666', u'666', u'666', u'666', u'666', u'666', u'666
    '], u'build_num': [u'12345', u'4444', u'8888', u'8888', u'8888', u'8888', u'8888', u'080808'], u'cbs_merge_blocker': [u'76767', u'76767', u'76767', u'76767', u'76767', u'7
    6767', u'76767', u'76767'], u'csrfmiddlewaretoken': [u'8sNCLiUu23tvqLe1QHdJp1c5sQJmhevw'], u'cbs_waived': [u'89898', u'89898', u'89898', u'89898', u'89898', u'89898', u'89
    898', u'89898']}

如果每一行都有单独的提交按钮，我将得到下面的request.POST

        QueryDict: {u'build_date': [u'2013-10-11'], u'cln': [u'23423'], u'logs': [u'no logs'], u'rpmt_status': [u'R'], u'rpmt_result': [u'F'], u'comments': [u'hghjg'], u'cbs_other_bugs': [u'666'], u'build_num': [u'12345'], u'cbs_merge_blocker': [u'76767'], u'csrfmiddlewaretoken': [u'8sNCLiUu23tvqLe1QHdJp1c5sQJmhevw'], u'cbs_waived': [u'89898']}

但是我想用一个提交按钮保存整个数据库。请告诉我我在哪里出错？或者，除了使用ModelForm之外，还有其他处理这种情况的最佳方法吗？

Answer 1

基本上问题在于客户端，它发送post请求。数据在客户端没有正确打包！

创建此json数据的javascript不符合服务器端预期的数据交换格式。

解决方案是用正确的字典格式打包数据。这就是旧的数据格式；

{
    "build_date": [
        "2013-10-11",
        "2013-10-11",
        "2013-10-11",
        "2013-10-11",
        "2013-10-11",
        "2013-10-11",
        "2013-10-11",
        "2013-10-11"
    ],
    "build_num": [
        "12345",
        "4444",
        "8888",
        "8888",
        "8888",
        "8888",
        "8888",
        "080808"
    ],
    "cbs_merge_blocker": [
        "76767",
        "76767",
        "76767",
        "76767",
        "76767",
        "76767",
        "76767",
        "76767"
    ],
    "cbs_other_bugs": [
        "666",
        "666",
        "666",
        "666",
        "666",
        "666",
        "666",
        "666"
    ],
    "cbs_waived": [
        "89898",
        "89898",
        "89898",
        "89898",
        "89898",
        "89898",
        "89898",
        "89898"
    ],
    "cln": [
        "5555",
        "2222",
        "2222",
        "2222",
        "2222",
        "2222",
        "2222",
        "090909"
    ],
    "comments": [
        "hghjg",
        "hghjg",
        "hghjg",
        "hghjg",
        "hghjg",
        "hghjg",
        "hghjg",
        "hghjg"
    ],
    "csrfmiddlewaretoken": [
        "8sNCLiUu23tvqLe1QHdJp1c5sQJmhevw"
    ],
    "logs": [
        "no logs",
        "no logs",
        "no logs",
        "no logs",
        "no logs",
        "no logs",
        "no logs",
        "no logs"
    ],
    "rpmt_result": [
        "F",
        "F",
        "F",
        "F",
        "F",
        "F",
        "F",
        "F"
    ],
    "rpmt_status": [
        "R",
        "R",
        "R",
        "R",
        "R",
        "R",
        "R",
        "R"
    ]
}

我建议将其更改为增加一个名为product的级别的键(主键)，并且所有数组值都与一个特定的产品相关。看起来就像这样！

{
   "product1":{
      "build_date":[
         "2013-10-11"
      ],
      "cln":[
         "23423"
      ],
      "comments":[
         "hghjg"
      ],
      "cbs_merge_blocker":[
         "76767"
      ],
      "rpmt_status":[
         "R"
      ],
      "logs":[
         "no logs"
      ],
      "cbs_other_bugs":[
         "666"
      ],
      "csrfmiddlewaretoken":[
         "8sNCLiUu23tvqLe1QHdJp1c5sQJmhevw"
      ],
      "build_num":[
         "12345"
      ],
      "cbs_waived":[
         "89898"
      ],
      "rpmt_result":[
         "F"
      ]
   },
   "product2":{
      "build_date":[
         "2013-10-11"
      ],
      "cln":[
         "23423"
      ],
      "comments":[
         "hghjg"
      ],
      "cbs_merge_blocker":[
         "76767"
      ],
      "rpmt_status":[
         "R"
      ],
      "logs":[
         "no logs"
      ],
      "cbs_other_bugs":[
         "666"
      ],
      "csrfmiddlewaretoken":[
         "8sNCLiUu23tvqLe1QHdJp1c5sQJmhevw"
      ],
      "build_num":[
         "12345"
      ],
      "cbs_waived":[
         "89898"
      ],
      "rpmt_result":[
         "F"
      ]
   }
}