{"id":662,"date":"2018-10-26T07:50:43","date_gmt":"2018-10-25T23:50:43","guid":{"rendered":"http:\/\/develop-note.com\/blog\/?p=662"},"modified":"2022-02-16T22:12:30","modified_gmt":"2022-02-16T14:12:30","slug":"2019ironman-flask-restful-day25","status":"publish","type":"post","link":"https:\/\/www.develop-note.com\/blog\/2018\/10\/26\/2019ironman-flask-restful-day25\/","title":{"rendered":"\u7b2c\u5341\u5c46\u9435\u4eba\u8cfd flask-restful DAY25-\u641e\u61c2\u5982\u4f55\u8655\u7406flask-sqlalchemy\u5728\u73fe\u6709\u5c08\u6848"},"content":{"rendered":"

\u5be6\u4f5cflask-sqlalchemy<\/h1>\n

\u5728\u6628\u65e5\u5df2\u7d93\u6559\u6388\u5927\u5bb6flask-sqlalchemy\u7684\u4e00\u4e9b\u57fa\u672c\u8a9e\u6cd5\uff0c\u4ee5\u53ca\u5982\u4f55\u5c07flask-sqlalchemy\u5c0e\u5165\u5c08\u6848\u4e4b\u4e2d\uff0c\u800c\u4eca\u5929\u5c31\u958b\u59cb\u9032\u4e00\u6b65\u4ecb\u7d39\u7d66\u5927\u5bb6\u5982\u4f55\u5728\u622a\u81f3\u76ee\u524d\u7684\u7a0b\u5f0f\u78bc\u4e2d\u52a0\u5165flask-sqlalchemy\u3002<\/p>\n

\u622a\u81f3\u76ee\u524d\u70ba\u6b62\u7684UserModel<\/h1>\n
import sqlite3\n\nclass UserModel:\n    name = ''\n    email = ''\n    password = ''\n    id = 0\n\n    def __init__(self, name, email, password):\n        self.name = name\n        self.email = email\n        self.password = password\n\n    def add_user(self):\n        conn = sqlite3.connect('user.db')\n        cursor = conn.cursor()\n        insert_query = 'INSERT INTO users VALUES(?, ?, ?, ?)'\n        cursor.execute(insert_query, (None, self.name,\n                                      self.email, self.password))\n        conn.commit()\n        conn.close()\n\n    def update_user(self):\n        conn = sqlite3.connect('user.db')\n        cursor = conn.cursor()\n        update_query = 'UPDATE users SET name=?, email=?, password=? WHERE id=?'\n        cursor.execute(update_query, (self.name,\n                                      self.email, self.password, self.id))\n        conn.commit()\n        conn.close()\n\n    @staticmethod\n    def get_user(name):\n        user = None\n        conn = sqlite3.connect('user.db')\n        cursor = conn.cursor()\n        query_one_query = 'SELECT * FROM users WHERE name=?'\n        result = cursor.execute(query_one_query, (name,)).fetchone()\n        if result is None:\n            return None\n        user = UserModel(result[1], result[2], result[3])\n        user.id = result[0]\n        conn.close()\n        return user\n\n    @staticmethod\n    def delete_user(name):\n        conn = sqlite3.connect('user.db')\n        cursor = conn.cursor()\n        delete_query = 'DELETE FROM users WHERE name=?'\n        cursor.execute(delete_query, (name,))\n        conn.commit()\n        conn.close()\n\n    @staticmethod\n    def get_all_user():\n        users = []\n        conn = sqlite3.connect('user.db')\n        cursor = conn.cursor()\n        query_one_query = 'SELECT * FROM users'\n        for item in cursor.execute(query_one_query):\n            user = UserModel(item[1], item[2], item[3])\n            user.id = item[0]\n            users.append(user)\n        conn.close()\n        return users<\/code><\/pre>\n
\u6240\u4ee5\u6211\u5011\u8981\u505a\u7684\u662f\u628a\u6240\u6709sqlite\u7684\u8a9e\u6cd5\u90fd\u62ff\u6389\uff0c\u4e26\u4e14\u6539\u7528common.db\u4f86\u5be6\u4f5c\u3002<\/p>\n
\u7528flask-sqlalchemy\u5be6\u4f5cUserModel<\/h1>\n
\u63a5\u4e0b\u4f86\u6703\u4e00\u500b\u6b65\u9a5f\u4e00\u500b\u6b65\u9a5f\u6559\u5927\u5bb6\u5982\u4f55\u5728\u73fe\u6709\u7684\u5c08\u6848\u4e2d\u5c0e\u5165flask-sqlalchemy\u3002<\/p>\n
\u8a2d\u8a08UserModel<\/h2>\n
\u9996\u5148\u5148\u91cd\u65b0\u5b9a\u7fa9UserModel\uff0c\u5167\u5bb9\u5982\u4e0b<\/p>\n
class UserModel(db.Model):\n    __tablename__ = 'users'\n    id = db.Column(db.Integer, primary_key=True)\n    name = db.Column(db.String(80), unique=True, nullable=False)\n    email = db.Column(db.String(120), unique=True, nullable=False)\n    password = db.Column(db.String(120))\n\n    def __init__(self, name, email, password):\n        self.name = name\n        self.email = email\n        self.password = password\n<\/code><\/pre>\n
\u5728\u5b9a\u7fa9\u5b8cUserModel\u5f8c\u6211\u5011\u8981\u958b\u59cb\u5be6\u4f5cCRUD\u4e86\u3002<\/p>\n
\u65b0\u589eUserModel<\/h2>\n
\u9019\u90e8\u5206\u5c07\u6628\u65e5\u7684\u8ab2\u7a0b\u5957\u7528\u5728\u4eca\u5929\u7684\u5be6\u4f5c\u4e0a\uff0c\u8acb\u53c3\u8003\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n
    def add_user(self):\n        db.session.add(self)\n        db.session.commit()<\/code><\/pre>\n
\u522a\u9664UserModel<\/h2>\n
\u5982\u540c\u65b0\u589e\uff0c\u522a\u9664\u7684\u4f5c\u6cd5\u4e5f\u5f88\u7c21\u55ae\uff0c\u8acb\u53c3\u8003\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n
    def delete_user(self):\n        db.session.delete(self)\n        db.session.commit()<\/code><\/pre>\n
\u4fee\u6539UserModel<\/h2>\n
\u6bd4\u8d77\u65b0\u589e\u3001\u522a\u9664\u4f86\u8aaa\u4fee\u6539\u7684\u4f5c\u6cd5\u66f4\u7c21\u55ae\uff0c\u8acb\u53c3\u8003\u4ee5\u4e0b\u5167\u5bb9\uff1a<\/p>\n
    def delete_user(self):\n        db.session.commit()<\/code><\/pre>\n
\u900f\u904e\u4f7f\u7528\u8005\u540d\u7a31\u4f86\u67e5\u8a62UserModel<\/h2>\n
\u67e5\u8a62\u76f8\u8f03\u77e5\u8b58\u6bd4\u8f03\u56f0\u96e3\u4e00\u9ede\uff0c\u4e0d\u904e\u4e5f\u6c92\u6709\u5f88\u96e3\uff0c\u8a73\u7d30\u5167\u5bb9\u8acb\u53c3\u8003\u4e0b\u5217\u7bc4\u4f8b\uff1a<\/p>\n
    @classmethod\n    def get_user(cls, name):\n        return cls.query.filter_by(name=name).first()<\/code><\/pre>\n
\u67e5\u8a62\u6240\u6709\u4f7f\u7528\u8005\u8cc7\u6599<\/h2>\n
\u6700\u5f8c\u8aaa\u660e\u4e00\u500b\u6628\u5929\u6c92\u6709\u8b1b\u5230\u7684\u6771\u897f\uff0c\u56e0\u70ba\u6211\u5011\u7684\u5c08\u6848\u6703\u5217\u51fa\u6240\u6709\u4f7f\u7528\u8005\u7684\u8cc7\u6599\uff0c\u9019\u90e8\u5206\u5c31\u9700\u8981\u900f\u904e\u4e0b\u5217\u65b9\u6cd5\u53d6\u5f97\u8cc7\u6599\u4e86\uff1a<\/p>\n
    @classmethod\n    def get_all_user(cls):\n        return cls.query.all()<\/code><\/pre>\n
\u8a2d\u5b9a\u8cc7\u6599\u5eab<\/h2>\n
\u5728\u5be6\u4f5c\u5b8c\u6210\u4e4b\u5f8c\u5c31\u662f\u8981\u8a2d\u5b9a\u8cc7\u6599\u5eab\u7684\u90e8\u5206\u4e86\uff0c\u6240\u4ee5\u9019\u88e1\u4fee\u6539app.py\u52a0\u5165\u4ee5\u4e0b\u5167\u5bb9\u5373\u53ef\uff1a<\/p>\n
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:\/\/\/user.db'<\/code><\/pre>\n
\u66f4\u6539\u5f8c\u7684\u7a0b\u5f0f\u78bc\uff1a<\/h2>\n
from common.db import db\n\nclass UserModel(db.Model):\n    __tablename__ = 'users'\n    id = db.Column(db.Integer, primary_key=True)\n    name = db.Column(db.String(80), unique=True, nullable=False)\n    email = db.Column(db.String(120), unique=True, nullable=False)\n    password = db.Column(db.String(120))\n\n    def __init__(self, name, email, password):\n        self.name = name\n        self.email = email\n        self.password = password\n\n    def add_user(self):\n        db.session.add(self)\n        db.session.commit()\n\n    def update_user(self):\n        db.session.commit()\n\n    @classmethod\n    def get_user(cls, name):\n        return cls.query.filter_by(name=name).first()\n\n    def delete_user(self):\n        db.session.delete(self)\n        db.session.commit()\n\n    @classmethod\n    def get_all_user(cls):\n        return cls.query.all()<\/code><\/pre>\n
\u5c0f\u7d50<\/h1>\n
\u4eca\u65e5\u7684\u8ab2\u7a0b\u900f\u904e\u5728\u73fe\u6709\u7684\u5c08\u6848\u4e2d\u5be6\u4f5cflask-sqlalchemy\uff0c\u5e0c\u671b\u80fd\u5920\u8b93\u8b80\u8005\u5011\u66f4\u4e86\u89e3\u5982\u4f55\u900f\u904eflask-sqlalchemy\u66f4\u4fbf\u5229\u7684\u64cd\u4f5c\u8cc7\u6599\u5eab\u7684\u5167\u5bb9\u3002\u4e0d\u904e\u622a\u81f3\u76ee\u524d\u70ba\u6b62\u9084\u6c92\u8aaa\u660e\u5982\u679c\u8cc7\u6599\u5eab\u9084\u6c92\u5efa\u7acb\u6216\u662f\u8cc7\u6599\u66f4\u65b0\u8a72\u5982\u4f55\u8655\u7406\uff0c\u9019\u90e8\u5206\u660e\u5929\u6703\u91dd\u5c0d\u52a0\u4ee5\u8aaa\u660e\uff0c\u656c\u8acb\u671f\u5f85\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5be6\u4f5cflask-sqlalchemy \u5728\u6628\u65e5\u5df2\u7d93\u6559\u6388\u5927\u5bb6flask-sqlalchemy\u7684\u4e00\u4e9b\u57fa\u672c\u8a9e\u6cd5\uff0c\u4ee5\u53ca\u5982 … <\/p>\n
\u95b1\u8b80\u5168\u6587\u3008\u7b2c\u5341\u5c46\u9435\u4eba\u8cfd flask-restful DAY25-\u641e\u61c2\u5982\u4f55\u8655\u7406flask-sqlalchemy\u5728\u73fe\u6709\u5c08\u6848\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":[162,4,5,27,3,29],"class_list":["post-662","post","type-post","status-publish","format-standard","hentry","category-develop","tag-2018ironman","tag-flask","tag-flask-restful","tag-flask-sqlalchemy","tag-python","tag-sqlalchemy"],"_links":{"self":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/662","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=662"}],"version-history":[{"count":5,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/662\/revisions"}],"predecessor-version":[{"id":2744,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/662\/revisions\/2744"}],"wp:attachment":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/media?parent=662"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/categories?post=662"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/tags?post=662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}