{"id":672,"date":"2018-10-27T20:40:06","date_gmt":"2018-10-27T12:40:06","guid":{"rendered":"http:\/\/develop-note.com\/blog\/?p=672"},"modified":"2022-02-16T22:12:06","modified_gmt":"2022-02-16T14:12:06","slug":"2019ironman-flask-restful-day26","status":"publish","type":"post","link":"https:\/\/www.develop-note.com\/blog\/2018\/10\/27\/2019ironman-flask-restful-day26\/","title":{"rendered":"\u7b2c\u5341\u5c46\u9435\u4eba\u8cfd flask-restful DAY26-\u641e\u61c2Flask-Migrate"},"content":{"rendered":"<h1>Flask-Migrate<\/h1>\n<p>\u5728\u6628\u65e5\u7684\u5167\u5bb9\u4e2d\u5df2\u7d93\u6559\u6388\u5927\u5bb6\u5982\u4f55\u5c07flask-SQLAlchemy\u5c0e\u5165\u5230\u73fe\u6709\u7684\u5c08\u6848\uff0c\u4f46\u662f\u82e5\u662f\u8cc7\u6599\u5eab\u5c1a\u672a\u521d\u59cb\u5316\u6216\u662fModel\u7d50\u69cb\u6709\u66f4\u65b0\u6642\u8981\u5982\u4f55\u66f4\u65b0\u8cc7\u6599\u5eab\u5462\uff0c\u9019\u5c31\u662f\u4eca\u65e5\u8981\u4ecb\u7d39\u7684\u51fd\u5f0f\u5eab<a href=\"https:\/\/flask-migrate.readthedocs.io\/en\/latest\/\" rel=\"nofollow noopener\" target=\"_blank\">Flask-Migrate<\/a>\u7684\u529f\u7528\u4e86\u3002<!--more--><\/p>\n<h2>\u5b89\u88ddFlask-Migrate<\/h2>\n<p>\u9996\u5148\u7b2c\u4e00\u4ef6\u8981\u505a\u7684\u662f\u4e0d\u5916\u4e4e\u5c31\u662f\u5b89\u88dd\u51fd\u5f0f\u5eab\uff0c\u7576\u7136\u770b\u904e\u524d\u9762\u5167\u5bb9\u7684\u8b80\u8005\u8acb\u8a66\u8a66\u81ea\u5df1\u662f\u5426\u5df2\u7d93\u5b78\u6703\u5982\u4f55\u5b89\u88dd\u51fd\u5f0f\u5eab\u4e86\uff0c\u82e5\u4e0d\u6703\u6216\u662f\u65b0\u52a0\u5165\u7684\u670b\u53cb\u5011\u8acb\u770b\u770b\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code class=\"language-bash\">$ pip install Flask-Migrate<\/code><\/pre>\n<h2>\u521d\u59cb\u5316Flask-Migrate<\/h2>\n<p>\u5728\u5b89\u88dd\u5b8c\u51fd\u5f0f\u5eab\u5f8c\u5c31\u662f\u8981\u5c07Flask-Migrate\u8a2d\u5b9a\u5230\u5c08\u6848\u5167\uff0c\u6240\u4ee5\u9019\u90e8\u5206\u5148\u770b\u4e00\u4e0b\u4ee5\u4e0b\u7684\u5167\u5bb9\uff1a<\/p>\n<pre><code class=\"language-python\">from flask import Flask\nfrom flask_sqlalchemy import SQLAlchemy\nfrom flask_migrate import Migrate\n\napp = Flask(__name__)\napp.config[&#039;SQLALCHEMY_DATABASE_URI&#039;] = &#039;sqlite:\/\/\/app.db&#039;\n\ndb = SQLAlchemy(app)\nmigrate = Migrate(app, db)\n\nclass User(db.Model):\n    id = db.Column(db.Integer, primary_key=True)\n    name = db.Column(db.String(128))<\/code><\/pre>\n<h2>flask_migrate\u7684\u6307\u4ee4<\/h2>\n<p>\u5728\u8a2d\u5b9a\u5b8c\u5f8c\u63a5\u4e0b\u4f86\u5c31\u662f\u8981\u4f7f\u7528flask_migrate\u7684\u6307\u4ee4\u4f86\u521d\u59cb\u5316\u8a2d\u5b9a\u6a94\u4ee5\u53ca\u8a2d\u5b9a\u8cc7\u6599\u5eab\u7b49\u8cc7\u8a0a\u4e86\uff0c\u4ee5\u4e0b\u5206\u5225\u91dd\u5c0d\u5176\u6307\u4ee4\u52a0\u4ee5\u8aaa\u660e\uff1a<\/p>\n<h3>flask db init<\/h3>\n<p>\u9019\u6307\u4ee4\u6703\u4f9d\u64daModel\u7684\u7d50\u69cb\u7522\u751f\u521d\u59cb\u5316\u8a2d\u5b9a\u4e26\u653e\u7f6e\u65bcmigrations\u8cc7\u6599\u593e\u5167\u3002<\/p>\n<h3>flask db migrate<\/h3>\n<p>\u900f\u904e\u9019\u6307\u4ee4\u53ef\u4ee5\u7522\u751f\u8cc7\u6599\u5eab\u5167\u5bb9\uff0c\u800c\u4e0d\u7528\u53bb\u5bebSQL\u8a9e\u6cd5\u5efa\u7acbTable\u4ee5\u53ca\u8a2d\u5b9aDB Schema\u3002<\/p>\n<h3>flask db upgrade<\/h3>\n<p>\u7576Model\u7684\u7d50\u69cb\u6709\u7570\u52d5\u6642\u8981\u81ea\u52d5\u66f4\u65b0\u8cc7\u6599\u5eab\u7684\u8a71\u9996\u5148\u5148\u57f7\u884c\u6b64\u6307\u4ee4\uff0c\u63a5\u4e0b\u4f86\u518d\u57f7\u884cflask db migrate\uff0c\u5982\u6b64\u5373\u53ef\u66f4\u65b0\u8cc7\u6599\u5eab\u4ee5\u7b26\u5408Model\u8cc7\u6599\u7d50\u69cb\u3002<\/p>\n<h1>\u6574\u5408\u6ce8\u610f\u4e8b\u9805<\/h1>\n<p>\u4e0d\u77e5\u9053\u8b80\u8005\u5011\u5728\u57f7\u884cflask db init\u662f\u5426\u6709\u9047\u5230\u4e0b\u5217\u554f\u984c\uff1a<\/p>\n<pre><code class=\"language-bash\">    .(\u4ee5\u4e0a\u7565)\n    directory = current_app.extensions[&#039;migrate&#039;].directory\nKeyError: &#039;migrate&#039;<\/code><\/pre>\n<p>\u7b46\u8005\u5e7e\u7d93\u53cd\u8986\u8a66\u9a57\uff0c\u751a\u81f3\u65bc\u4f7f\u7528flask-script\u4f86\u89e3\u6c7a\uff0c\u4f3c\u4e4e\u53ef\u4ee5\u7528flask-script\u4f86\u89e3\u6c7a\u9019\u554f\u984c\uff0c\u4f46\u662f\u722c\u6587\u5982<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/30280143\" rel=\"nofollow noopener\" target=\"_blank\">\u662f\u65f6\u5019\u4ece Flask-Script \u8fc1\u79fb\u5230 Flask CLI\u4e86<\/a>\u8aaa\u660eflask-script\u5df2\u8a31\u4e45\u6c92\u66f4\u65b0\u4e86\uff0c\u6240\u4ee5\u53c8\u518d\u91cd\u65b0\u6aa2\u8996\u54ea\u88e1\u51fa\u4e86\u554f\u984c\uff0c\u6700\u5f8c\u554f\u984c\u662f\u51fa\u5728\uff1a<\/p>\n<pre><code class=\"language-python\">if __name__ == &#039;__main__&#039;:\n    from common.db import db\n    from common.ma import ma\n    from flask_migrate import Migrate\n    db.init_app(app)\n    migrate = Migrate(app, db)\n    ma.init_app(app)<\/code><\/pre>\n<p>\u6709\u8b80\u8005\u770b\u51fa\u7aef\u502a\u4e86\u55ce?\u91cd\u9ede\u5728\u65bcflask db init\u57f7\u884c\u6642\u96d6\u7136\u6703\u8dd1app.py\uff0c\u4f46\u662f\u6c92\u8fa6\u6cd5\u57f7\u884c\u5230\u521d\u59cb\u5316SQLAlchemy\u8ddfMigrate\uff0c\u6240\u4ee5\u57f7\u884cflask db init\u6703\u51fa\u73fe\u4e0a\u9762\u7684\u932f\u8aa4\uff0c\u9019\u662f\u6211\u5728\u8655\u7406flask-migrate\u6240\u9047\u5230\u7684\u5751\u3002<\/p>\n<h1>\u5c0f\u7d50<\/h1>\n<p>\u4eca\u65e5\u4e3b\u8981\u662f\u6559\u6388\u5982\u4f55\u900f\u904eFlask-Migrate\u4f86\u5354\u8abfModel\u8207\u8cc7\u6599\u5eab\u7684\u5dee\u7570\u4ee5\u53ca\u900f\u904e\u6307\u4ee4\u5c07\u8cc7\u6599\u5eab\u5347\u7d1a\u4ee5\u7b26\u5408Model\u7684\u8cc7\u6599\u7d50\u69cb\uff0c\u660e\u65e5\u5728\u66f4\u9032\u4e00\u6b65\u6559\u6388SQLAlchemy\u5982\u4f55\u8655\u7406\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u7b49\u9032\u968e\u5167\u5bb9\uff0c\u656c\u8acb\u671f\u5f85\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flask-Migrate \u5728\u6628\u65e5\u7684\u5167\u5bb9\u4e2d\u5df2\u7d93\u6559\u6388\u5927\u5bb6\u5982\u4f55\u5c07flask-SQLAlchemy\u5c0e\u5165\u5230\u73fe\u6709\u7684\u5c08\u6848\uff0c &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.develop-note.com\/blog\/2018\/10\/27\/2019ironman-flask-restful-day26\/\" class=\"more-link\">\u95b1\u8b80\u5168\u6587<span class=\"screen-reader-text\">\u3008\u7b2c\u5341\u5c46\u9435\u4eba\u8cfd flask-restful DAY26-\u641e\u61c2Flask-Migrate\u3009<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[2],"tags":[162,4,31,5,3],"class_list":["post-672","post","type-post","status-publish","format-standard","hentry","category-develop","tag-2018ironman","tag-flask","tag-flask-migrate","tag-flask-restful","tag-python"],"_links":{"self":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":5,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":2743,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/672\/revisions\/2743"}],"wp:attachment":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/media?parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/categories?post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/tags?post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}