{"id":125682,"date":"2020-01-08T23:11:02","date_gmt":"2020-01-08T15:11:02","guid":{"rendered":"http:\/\/4563.org\/?p=125682"},"modified":"2020-01-08T23:11:02","modified_gmt":"2020-01-08T15:11:02","slug":"flask-sqlalchemy-%e6%96%b0%e5%a2%9e%e6%95%b0%e6%8d%ae%e5%85%a5%e5%ba%93%ef%bc%8c%e7%84%b6%e5%90%8e%e9%a9%ac%e4%b8%8a%e6%9f%a5%e8%af%a2%ef%bc%8c%e4%bc%9a%e6%9c%89%e6%9f%a5%e8%af%a2%e4%b8%8d%e5%88%b0","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=125682","title":{"rendered":"flask-sqlalchemy \u65b0\u589e\u6570\u636e\u5165\u5e93\uff0c\u7136\u540e\u9a6c\u4e0a\u67e5\u8be2\uff0c\u4f1a\u6709\u67e5\u8be2\u4e0d\u5230\u6570\u636e\u7684\u60c5\u51b5\uff1f"},"content":{"rendered":"
\n
\n
\n

flask-sqlalchemy \u65b0\u589e\u6570\u636e\u5165\u5e93\uff0c\u7136\u540e\u9a6c\u4e0a\u67e5\u8be2\uff0c\u4f1a\u6709\u67e5\u8be2\u4e0d\u5230\u6570\u636e\u7684\u60c5\u51b5\uff1f <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : Raul7 <\/span> <\/i> 65<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5148\u8d34\u4ee3\u7801\uff1a<\/p>\n

try:   # \u5224\u65ad\u8868\u4e2d\u6570\u636e\u662f\u5426\u5b58\u5728\uff0c\u5b58\u5728\u66f4\u65b0\uff0c\u4e0d\u5b58\u5728\u65b0\u589e   if not existing:       db.session.execute(           ServiceAsset.__table__.insert(),           [{'xxx': xxx}]       )   else:       ServiceAsset.query.filter_by(host_id=xxx, port=xxx).update({'xxx':'xxx'})   db.session.commit() except Exception as e:   db.session.rollback()  # ServiceAsset \u8868\u6570\u636e\u5165\u5e93\u540e\uff0c\u9a6c\u4e0a\u5728 ServiceAsset \u8868\u8fdb\u884c\u4e00\u4e2a\u67e5\u8be2\u83b7\u53d6 ServiceAsset \u8868\u7684 id try:   service_asset_query = ServiceAsset.query.filter(and_(xx=xx, xxx=xxx)).all()   if not service_asset_query:       log.write('info', None, 0, u'\u5728 ServiceAsset \u4e2d\u6839\u636e xx \u548c xxx \u672a\u83b7\u53d6\u5230\u8d44\u4ea7\u4fe1\u606f')       pass   for saq in service_asset_query:       service_id_cur = saq.service_id except Exception as e:     db.session.rollback() <\/code><\/pre>\n
\u5927\u6982\u63d2\u5165\u4e86\u51e0\u767e\u6761\u6570\u636e\uff0c\u5176\u4e2d\u4f1a\u6709\u51e0\u6761\u83b7\u53d6\u4e0d\u5230 service_asset_query\u3002 \"flask-sqlalchemy<\/p>\n
\u8bf7\u95ee\u4e0b\u5404\u4f4d\u8868\u54e5\u4eec\uff0c\u6709\u9047\u5230\u8fd9\u79cd\u60c5\u51b5\u5417\uff1f\u8be5\u5982\u4f55\u89e3\u51b3<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (11<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : rogwan <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5982\u679c\u8bfb\u5199\u5e76\u884c\uff0c\u6216\u8005\u6709\u4e3b\u5907\u7684\u65f6\u5019\uff0c\u53ef\u80fd\u51fa\u73b0\u8fd9\u4e2a\u60c5\u51b5\uff0c\u5047\u5982\u63d2\u5165 100 \u6761\u6570\u636e\uff0c\u5728\u5199 90 \u6761\u7684\u65f6\u5019\uff0c\u6765\u8bfb\u53d6\u5c31\u4f1a\u9057\u6f0f\u90e8\u5206\u8fd8\u5728 session \u91cc\u7684\u6570\u636e\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Raul7 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @rogwan \u90a3\u8981\u600e\u4e48\u89e3\u51b3\u554a \u6211\u8fd9\u8fb9\u5e94\u8be5\u662f\u6709\u4e3b\u5907                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : wangyzj <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Raul7 \u4e0d\u662f\u540c\u4e00\u4e2a\u8282\u70b9\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : lhx2008 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e00\u822c\u5c31\u4e0d\u7ba1\u4e86\uff0c\u53cd\u6b63\u7b49\u4f1a\u4f1a\u63d2\u8fdb\u53bb\u7684\u3002\u3002\u8981\u4e0d\u4f60\u5c31\u5f3a\u5236\u4e3b\u5e93\u67e5                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Raul7 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @lhx2008 \u6211\u8d34\u7684\u4ee3\u7801\u540e\u9762\u7684\u8fc7\u7a0b\u662f\u8981\u5165\u5e93\u53e6\u4e00\u5f20\u8868\uff0c\u6709\u51e0\u6761\u6ca1\u67e5\u51fa\u7ed3\u679c\uff0c\u6211\u53e6\u4e00\u5f20\u8868\u7684\u6570\u636e\u5168\u4e71\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : simapple <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 session \u7684\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Raul7 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @wangyzj \u6709\u4e3b\u4ece \u5199\u548c\u66f4\u65b0\u64cd\u4f5c\u90fd\u662f\u76f4\u63a5\u4e3b\u5e93 \u8bfb\u662f\u4e3b\u4ece\u4e00\u8d77                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : wukangave <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6570\u636e\u5e93\u7ecf\u5178\u7684 read-after-write-consistency \u95ee\u9898\u3002\u5f53\u5199\u5165\u540e\u7acb\u5373\u8bfb\u53d6\u65f6\uff0c\u8981\u4fdd\u8bc1\u4ece\u4e3b\u8282\u70b9\u8bfb                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : wangyzj <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Raul7 \u6709\u4e3b\u4ece
    \u8fd9\u5c31\u662f\u4e0d\u662f sqlalchemy \u7684\u95ee\u9898\u4e86
    \u4e3b\u4ece\u4e0d\u662f\u7edd\u5bf9\u5b9e\u65f6\u554a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : exip <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u597d\u50cf\u662f\u4e8b\u52a1\u5e94\u8be5\u89e3\u51b3\u7684\u95ee\u9898.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : jwchen <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e3b\u4ece\u8981\u60f3\u60f3\u529e\u6cd5\u81ea\u5df1\u63a7\u5236\u53bb\u54ea\u91cc\u8bfb\uff0c\u5b9e\u65f6\u6027\u9ad8\u7684\u5f53\u7136\u8981\u4ef7\u683c is_salve \u4e4b\u7c7b\u7684\u53c2\u6570                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    flask-sqlalchemy …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/125682"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=125682"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/125682\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=125682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=125682"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=125682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}