{"id":24239,"date":"2024-03-16T02:47:57","date_gmt":"2024-03-16T02:47:57","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/"},"modified":"2024-03-22T03:13:35","modified_gmt":"2024-03-22T03:13:35","slug":"what-is-the-usage-of-flask-session","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/","title":{"rendered":"What is the usage of flask session?"},"content":{"rendered":"<p>Flask Session is an extension provided by the Flask framework, used for managing user session data in a web application. It allows for storing and accessing information such as login status and shopping cart contents.<\/p>\n<p>The steps for using the Flask Session extension are as follows:<\/p>\n<ol>\n<li>To install the Flask Session extension, you can use pip by running the command pip install flask-session.<\/li>\n<li>To import extensions in a Flask application, you can import Flask Session extension in the main file of the application, such as from flask_session import Session.<\/li>\n<li>Set up Flask Session: Add relevant configurations to the Flask application settings, such as specifying the session storage method and encryption key. For example:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>app.config[<span class=\"hljs-string\">'SESSION_TYPE'<\/span>] = <span class=\"hljs-string\">'redis'<\/span>  <span class=\"hljs-comment\"># session \u5b58\u50a8\u65b9\u5f0f\u4e3a Redis<\/span>\r\napp.config[<span class=\"hljs-string\">'SESSION_REDIS'<\/span>] = redis.from_url(<span class=\"hljs-string\">'redis:\/\/localhost:6379'<\/span>)  <span class=\"hljs-comment\"># Redis \u670d\u52a1\u5668\u914d\u7f6e<\/span>\r\napp.config[<span class=\"hljs-string\">'SECRET_KEY'<\/span>] = <span class=\"hljs-string\">'your_secret_key'<\/span>  <span class=\"hljs-comment\"># \u52a0\u5bc6\u5bc6\u94a5<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>Initialize Flask Session: Initialize Flask Session on the application instance, such as Session(app).<\/li>\n<li>Using Flask Session: You can use the session object in the view function to store and retrieve user session data. For example:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">from<\/span> flask <span class=\"hljs-keyword\">import<\/span> session\r\n\r\n<span class=\"hljs-meta\">@app.route(<span class=\"hljs-params\"><span class=\"hljs-string\">'\/login'<\/span>, methods=[<span class=\"hljs-string\">'POST'<\/span>]<\/span>)<\/span>\r\n<span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">login<\/span>():\r\n    username = request.form[<span class=\"hljs-string\">'username'<\/span>]\r\n    password = request.form[<span class=\"hljs-string\">'password'<\/span>]\r\n    <span class=\"hljs-comment\"># \u9a8c\u8bc1\u7528\u6237\u540d\u548c\u5bc6\u7801...<\/span>\r\n    <span class=\"hljs-keyword\">if<\/span> valid_credentials(username, password):\r\n        session[<span class=\"hljs-string\">'logged_in'<\/span>] = <span class=\"hljs-literal\">True<\/span>\r\n        session[<span class=\"hljs-string\">'username'<\/span>] = username\r\n        <span class=\"hljs-keyword\">return<\/span> redirect(url_for(<span class=\"hljs-string\">'dashboard'<\/span>))\r\n    <span class=\"hljs-keyword\">else<\/span>:\r\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">'Invalid credentials'<\/span>, <span class=\"hljs-number\">401<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">@app.route(<span class=\"hljs-params\"><span class=\"hljs-string\">'\/dashboard'<\/span><\/span>)<\/span>\r\n<span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">dashboard<\/span>():\r\n    <span class=\"hljs-keyword\">if<\/span> session.get(<span class=\"hljs-string\">'logged_in'<\/span>):\r\n        <span class=\"hljs-comment\"># \u7528\u6237\u5df2\u767b\u5f55\uff0c\u663e\u793a\u7528\u6237\u4fe1\u606f<\/span>\r\n        username = session.get(<span class=\"hljs-string\">'username'<\/span>)\r\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">f'Welcome, <span class=\"hljs-subst\">{username}<\/span>!'<\/span>\r\n    <span class=\"hljs-keyword\">else<\/span>:\r\n        <span class=\"hljs-comment\"># \u7528\u6237\u672a\u767b\u5f55\uff0c\u8df3\u8f6c\u5230\u767b\u5f55\u9875\u9762<\/span>\r\n        <span class=\"hljs-keyword\">return<\/span> redirect(url_for(<span class=\"hljs-string\">'login'<\/span>))\r\n<\/code><\/pre>\n<p>The above is the basic usage of Flask Session, which makes it convenient to manage user session data and store or retrieve data in view functions using the session object. It is important to note that Flask Session defaults to storing session data in the server&#8217;s memory, but can also be configured to store it in a database or other storage methods for persistent storage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flask Session is an extension provided by the Flask framework, used for managing user session data in a web application. It allows for storing and accessing information such as login status and shopping cart contents. The steps for using the Flask Session extension are as follows: To install the Flask Session extension, you can use [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-24239","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is the usage of flask session? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the usage of flask session?\" \/>\n<meta property=\"og:description\" content=\"Flask Session is an extension provided by the Flask framework, used for managing user session data in a web application. 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The steps for using the Flask Session extension are as follows: To install the Flask Session extension, you can use [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-16T02:47:57+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T03:13:35+00:00\" \/>\n<meta name=\"author\" content=\"William Carter\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"William Carter\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/\"},\"author\":{\"name\":\"William Carter\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/f697031891aacefc4b681d139781d3c0\"},\"headline\":\"What is the usage of flask session?\",\"datePublished\":\"2024-03-16T02:47:57+00:00\",\"dateModified\":\"2024-03-22T03:13:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/\"},\"wordCount\":223,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-flask-session\/\",\"name\":\"What is the usage of flask session? 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