{"id":16974,"date":"2024-03-15T14:01:29","date_gmt":"2024-03-15T14:01:29","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-update-database-data-in-django\/"},"modified":"2025-08-07T07:27:21","modified_gmt":"2025-08-07T07:27:21","slug":"how-to-update-database-data-in-django","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-update-database-data-in-django\/","title":{"rendered":"How to update database data in Django?"},"content":{"rendered":"

There are many ways in Django to update database data, here are some common methods:<\/p>\n

    \n
  1. refresh()<\/li>\n<\/ol>\n
    Model.objects.filter<\/span>(\u6761\u4ef6).update(\u5b57\u6bb5=\u65b0\u503c)\r\n<\/code><\/pre>\n
    This method can efficiently update a large amount of data, but it won’t trigger Django’s signals, model methods, and uniqueness validation.<\/p>\n
      \n
    1. store()<\/li>\n<\/ol>\n
      obj = Model.objects.get(\u6761\u4ef6)\r\nobj.\u5b57\u6bb5 = \u65b0\u503c\r\nobj.save()\r\n<\/code><\/pre>\n
      This method can trigger Django signals and model methods, but it is not efficient when updating large amounts of data.<\/p>\n
        \n
      1. Update existing data or create new data.<\/li>\n<\/ol>\n
        obj, created = Model.objects.update_or_create(\u6761\u4ef6, defaults={'\u5b57\u6bb5'<\/span>: \u65b0\u503c})\r\n<\/code><\/pre>\n
        This method will attempt to find an object based on conditions, and if found, update its field values. If not found, it will create a new object. It returns a tuple with the first element being the updated or created object, and the second element being a boolean value indicating whether a new object was created.<\/p>\n
          \n
        1. update in large quantities<\/li>\n<\/ol>\n
          objs = Model.objects.filter<\/span>(\u6761\u4ef6)\r\nfor<\/span> obj in<\/span> objs:\r\n    obj.\u5b57\u6bb5 = \u65b0\u503c\r\nModel.objects.bulk_update(objs, ['\u5b57\u6bb5'<\/span>])\r\n<\/code><\/pre>\n
          This method efficiently updates and saves all modified object fields back to the database, as opposed to saving each object individually.<\/p>\n
          Here are some common methods for updating databases, choose the appropriate method based on your actual needs.<\/p>\n","protected":false},"excerpt":{"rendered":"
          There are many ways in Django to update database data, here are some common methods: refresh() Model.objects.filter(\u6761\u4ef6).update(\u5b57\u6bb5=\u65b0\u503c) This method can efficiently update a large amount of data, but it won’t trigger Django’s signals, model methods, and uniqueness validation. store() obj = Model.objects.get(\u6761\u4ef6) obj.\u5b57\u6bb5 = \u65b0\u503c obj.save() This method can trigger Django signals and model methods, […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-16974","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"yoast_head":"\nHow to update database data in Django? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how to update database data in django?. 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