{"id":678,"date":"2018-10-28T12:15:56","date_gmt":"2018-10-28T04:15:56","guid":{"rendered":"http:\/\/develop-note.com\/blog\/?p=678"},"modified":"2022-02-16T22:11:47","modified_gmt":"2022-02-16T14:11:47","slug":"2019ironman-flask-restful-day27","status":"publish","type":"post","link":"https:\/\/www.develop-note.com\/blog\/2018\/10\/28\/2019ironman-flask-restful-day27\/","title":{"rendered":"\u7b2c\u5341\u5c46\u9435\u4eba\u8cfd flask-restful DAY27-\u641e\u61c2Flask-SQLAlchemy\u95dc\u806f\u8cc7\u6599\u5eab"},"content":{"rendered":"

Flask-SQLAlchemy\u95dc\u806f\u8cc7\u6599\u5eab<\/h1>\n

\u76f8\u4fe1\u5c0d\u65bcSQL\u8cc7\u6599\u5eab\u6709\u4e9b\u8a8d\u8b58\u7684\u8b80\u8005\u5011\u90fd\u77e5\u9053\u8cc7\u6599\u5eab\u53ef\u4ee5\u8a2d\u5b9a\u95dc\u806f\uff0c\u7136\u800cFlask-SQLAlchemy\u5982\u4f55\u8655\u7406\u9019\u6a23\u5b50\u7684\u95dc\u806f\u5462\uff0c\u53c8\u6216\u8005\u5982\u4f55\u8a2d\u5b9a\u5169\u500bTable\u7684\u8cc7\u6599\u662f\u6709\u95dc\u9023\u7684\u5462\uff0c\u9019\u5c31\u662f\u4eca\u65e5\u6559\u6388\u5167\u5bb9\u7684\u91cd\u9ede<\/p>\n

\u70ba\u4f55\u8981\u8a2d\u5b9a\u95dc\u806f<\/h1>\n

\u5728\u524d\u5e7e\u65e5\u7b46\u8005\u6559\u6388\u5927\u5bb6\u5982\u4f55\u900f\u904e\u8a2d\u5b9aUserModel\u4f86\u8a2d\u5b9a\u4f7f\u7528\u8005\u8cc7\u6599\uff0c\u4e26\u5b9a\u7fa9\u4e86\u4f7f\u7528\u8005\u8cc7\u6599\u7684\u5167\u5bb9\u70ba\u4f55\uff0c\u518d\u4f86\u900f\u904eFlask-Mirgate\u4f86\u7522\u751f\u8cc7\u6599\u5eab\u7684\u7d50\u69cb\uff0c\u4ee5\u53ca\u82e5\u662f\u65b0\u589e\u6b04\u4f4d\u8a72\u5982\u4f55\u8655\u7f6e\u3002\u4f46\u662f\u4ee5\u4e0a\u7684\u5167\u5bb9\u90fd\u662f\u50c5\u6709\u4e00\u500bTable\u7684\u5167\u5bb9\uff0c\u800c\u73fe\u5be6\u751f\u6d3b\u4e2d\u7684\u8cc7\u6599\u5eab\u4e26\u4e0d\u662f\u9019\u9ebc\u55ae\u7d14\u7684\uff0c\u96d6\u7136\u55ae\u7d14\u7684\u8cc7\u6599\u5eab\u900f\u904e\u7a0b\u5f0f\u7684\u8a2d\u8a08\u662f\u53ef\u4ee5\u9748\u6d3b\u7684\u5b58\u53d6\u8cc7\u6599\uff0c\u4f46\u662f\u5728\u8cc7\u6599\u7684\u7dad\u8b77\u53ca\u66f4\u65b0\u4e0a\u76f8\u8f03\u4e4b\u4e0b\u5c31\u8b8a\u5f97\u8907\u96dc\u4e86\u3002<\/p>\n

\u4f8b\u5982\u4eca\u5929\u6709\u500bpost\u7684Table\u7d00\u8f09\u8457\u4f7f\u7528\u8005\u7684\u8cbc\u6587\u5167\u5bb9\uff0c\u7576\u7136\u6703\u6709\u500bid\u4f86\u8868\u793a\u662f\u54ea\u500b\u4f7f\u7528\u8005\u767c\u8868\u8cbc\u6587\uff0c\u751a\u81f3\u65bc\u6709\u500bid\u4f86\u8868\u793a\u90a3\u4e9b\u4f7f\u7528\u8005\u5c0d\u6b64\u8cbc\u6587\u767c\u8868\u611f\u60f3\uff0c\u7576\u7136\u8b80\u8005\u5011\u53ef\u4ee5\u5206\u958b\u4f86\u5b58\u53d6\uff0c\u4f46\u662f\u5982\u6b64\u5c0d\u8cc7\u6599\u5eab\u7684\u6548\u80fd\u4e0a\u662f\u4e00\u500b\u8003\u9a57\uff0c\u7576\u7136\u6700\u6070\u7576\u7684\u505a\u6cd5\u662f\u53ef\u4ee5\u4e00\u500b\u67e5\u8a62\u5c31\u53ef\u4ee5\u53d6\u7684\u8cc7\u6599\uff0c\u4f46\u662f\u600e\u9ebc\u505a\u5462?\u9019\u5c31\u662f\u4eca\u5929\u8981\u4ecb\u7d39\u7684\u95dc\u806f\u3002<\/p>\n

\u5982\u4f55\u8a2d\u5b9a\u95dc\u806f<\/h1>\n

\u7d93\u904e\u4e0a\u8ff0\u7684\u4f8b\u5b50\u5e0c\u671b\u8b80\u8005\u5011\u80fd\u77ad\u89e3\u70ba\u4f55\u4f7f\u7528\u8cc7\u6599\u5eab\u7684\u95dc\u806f\uff0c\u800c\u63a5\u4e0b\u4f86\u5c31\u900f\u904e\u4e0a\u8ff0\u7684\u4f8b\u5b50\u4f86\u8aaa\u660e\u600e\u9ebc\u5728Flask-SQLAlchemy\u8a2d\u5b9a\u95dc\u806f\uff0c\u9996\u5148\u6211\u5011\u5148\u5b9a\u7fa9post\u7684Model<\/p>\n

class PostModel(db.Model):\n    id = db.Column(db.Integer, primary_key=True)\n    title = db.Column(db.String(50), nullable=False)\n    content = db.Column(db.String(50), nullable=False)\n    poster_id = db.Column(db.Integer, db.ForeignKey('user.id'),\n        nullable=False)<\/code><\/pre>\n
\u900f\u904eposter_id<\/code><\/code>\u6211\u5011\u53ef\u4ee5\u5c07PostModel\u8207UserModel\u95dc\u806f\u8d77\u4f86\uff0c\u4f46\u662f\u5982\u4f55\u5728\u67e5\u8a62\u4f7f\u7528\u8005\u8cc7\u6599\u6642\u5c07\u5148\u95dc\u7684\u8cbc\u6587\u8cc7\u6599\u7d66\u4e00\u4f75\u67e5\u8a62\u51fa\u4f86\u5462\uff0c\u9019\u90e8\u5206\u63a5\u4e0b\u4f86\u8aaa\u660e\u3002<\/p>\n
\u5982\u4f55\u8a2d\u5b9a\u67e5\u8a62\u95dc\u806f<\/h1>\n
\u9019\u90e8\u5206\u8aaa\u660e\u5982\u4f55\u5728\u67e5\u8a62\u4f7f\u7528\u8005\u8cc7\u6599\u6642\u5c07\u5148\u95dc\u7684\u8cbc\u6587\u8cc7\u6599\u7d66\u4e00\u4f75\u67e5\u8a62\u51fa\u4f86\uff0c\u6240\u4ee5\u6211\u5011\u7e7c\u7e8c\u4fee\u6539UserModel\uff1a<\/p>\n
class UserModel(db.Model):\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    posts = db.relationship('PostModel', backref='user', lazy=True)<\/code><\/pre>\n
\u900f\u904e\u4e0a\u8ff0\u7684\u7a0b\u5f0f\u5373\u53ef\u5c07\u4f7f\u7528\u8005\u8207\u8cbc\u6587\u5169\u500b\u8cc7\u6599\u95dc\u806f\u8d77\u4f86\uff0c\u800c\u4e14\u5728\u67e5\u8a62\u4f7f\u7528\u8005\u6642\u53d6\u5f97\u8cbc\u6587\u7684\u8cc7\u8a0a\uff0c\u53cd\u904e\u4f86\u7576\u53d6\u5f97\u8cbc\u6587\u6642\u4e5f\u53ef\u4ee5\u53d6\u7684\u8cbc\u6b64\u6587\u7684\u4f5c\u8005\u7684\u8cc7\u8a0a\u3002<\/p>\n
\u8a2d\u5b9aflask-marshmallow<\/h1>\n
\u4f9d\u64da\u4e0a\u8ff0\u7684\u505a\u6cd5\u53ef\u4ee5\u5b8c\u6210\u8cc7\u6599\u5eab\u4ee5\u53caflask-SQLAlchemy\u7684\u95dc\u806f\uff0c\u4f46\u662f\u8981\u56de\u50b3\u7d66client\u7aef\u5404\u4f4d\u8b80\u8005\u61c9\u8a72\u53ea\u6703\u770b\u5230\u4f7f\u7528\u8005\u8cc7\u6599\uff0c\u9019\u554f\u984c\u51fa\u5728\u54ea\u88e1\u5462?\u56e0\u70ba\u6211\u5011\u56de\u50b3\u7d66\u5ba2\u6236\u7aef\u7684\u8cc7\u6599\u662f\u900f\u904eflask-marshmallow\u4f86dump\u6210json\u7684\u683c\u5f0f\uff0c\u6240\u4ee5\u63a5\u4e0b\u4f86\u8981\u4fee\u6539UserSchema\u4f86\u8655\u7406\u9019\u554f\u984c\uff0c\u8acb\u770b\u4ee5\u4e0b\u4fee\u6539\uff1a<\/p>\n
from common.ma import ma\nfrom marshmallow import validate\nfrom models.user import UserModel\nfrom models.schema.post import PostSchema\n\nclass UserSchema(ma.Schema):\n    class Mate:\n        model = UserModel\n    id = ma.Int()\n    name = ma.Str()\n    email = ma.Email(required=True)\n    password = ma.Str(required=True, validate=[\n                      validate.Length(min=6, max=36)],)\n    posts = ma.List(ma.Nested(PostSchema))<\/code><\/pre>\n
\u9019\u88e1\u6211\u5011\u591a\u52a0\u4e00\u500bPostSchema\u4f86\u5b9a\u7fa9\u89e3\u6790\u4ee5\u53ca\u56de\u50b3\u7d66client\u7aef\u7684\u8cbc\u6587\u8cc7\u6599\uff0c\u56e0\u70ba\u4f7f\u7528\u8005\u8cc7\u6599\u662f\u4e00\u5c0d\u591a\u7684\u7d50\u69cb\uff0c\u4e5f\u5c31\u662f\u4e00\u500b\u4f7f\u7528\u8005\u6709\u591a\u5f35\u8cbc\u6587\uff0c\u6240\u4ee5\u4f7f\u7528\u8005\u6703\u6709\u4e00\u500bposts\u7684\u5c6c\u6027\uff0c\u4ed6\u662f\u4e00\u500blist\u7684PostSchema\uff0c\u6240\u4ee5\u6211\u5011\u4f7f\u7528ma.List\u4ee5\u53cama.Nested(PostSchema)\u4f86\u89e3\u6790UserModel\u7684posts\u5c6c\u6027\uff0c\u5982\u6b64\u5c31\u80fd\u5728\u8fd4\u56declient\u7aef\u6b63\u5e38dump UserModel\u7684posts\u5167\u5bb9\u3002<\/p>\n
\u5c0f\u7d50<\/h1>\n
\u900f\u904eflask-SQLAlchemy\u53ef\u4ee5\u5c07\u958b\u767c\u8b8a\u5f97\u66f4\u4fbf\u5229\uff0c\u4e0d\u7528\u5beb\u904e\u591a\u7684\u7a0b\u5f0f\u78bc\u5c31\u53ef\u4ee5\u5c07\u5169\u500bTable\u7d66\u95dc\u806f\u8d77\u4f86\u4e26\u4e92\u76f8\u53d6\u5f97\u3002\u5728\u53d6\u5f97\u8cc7\u6599\u8b8a\u5f97\u66f4\u4fbf\u5229\u7684\u72c0\u6cc1\u4e0b\uff0c\u5982\u4f55\u9a57\u8b49\u4f7f\u7528\u8005\u662f\u5426\u6709\u8cc7\u683c\u53d6\u7684\u8cc7\u6599\u5c31\u986f\u5f97\u91cd\u8981\u4e86\uff0c\u518d\u4f86\u4eca\u65e5\u7684\u8ab2\u7a0b\u95dc\u65bc\u4f7f\u7528\u8005id\u7684\u50b3\u8f38\u662f\u900f\u904epost\u53c3\u6578\u4f86\u50b3\u8f38\uff0c\u5982\u679c\u8aaa\u5165\u932f\u4e86\u6703\u600e\u9ebc\u6a23\u5462\uff0c\u662f\u4e0d\u662f\u5c31\u6b78\u5c6c\u5230\u5225\u4eba\u7684\u8cbc\u6587\u5167\u4e86\u3002\u6240\u4ee5\u660e\u5929\u8981\u5728\u6559\u6388\u5927\u5bb6\u5982\u4f55\u9a57\u8b49\u4f7f\u7528\u8005\u662f\u5426\u6709\u8cc7\u683c\u8abf\u7528\u6b64api\uff0c\u656c\u8acb\u671f\u5f85\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Flask-SQLAlchemy\u95dc\u806f\u8cc7\u6599\u5eab \u76f8\u4fe1\u5c0d\u65bcSQL\u8cc7\u6599\u5eab\u6709\u4e9b\u8a8d\u8b58\u7684\u8b80\u8005\u5011\u90fd\u77e5\u9053\u8cc7\u6599\u5eab\u53ef\u4ee5\u8a2d\u5b9a\u95dc\u806f\uff0c\u7136\u800c … <\/p>\n
\u95b1\u8b80\u5168\u6587\u3008\u7b2c\u5341\u5c46\u9435\u4eba\u8cfd flask-restful DAY27-\u641e\u61c2Flask-SQLAlchemy\u95dc\u806f\u8cc7\u6599\u5eab\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-678","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\/678","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=678"}],"version-history":[{"count":7,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/678\/revisions"}],"predecessor-version":[{"id":2742,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/posts\/678\/revisions\/2742"}],"wp:attachment":[{"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/media?parent=678"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/categories?post=678"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.develop-note.com\/blog\/wp-json\/wp\/v2\/tags?post=678"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}