{"id":50304,"date":"2024-12-03T17:47:57","date_gmt":"2024-12-03T09:47:57","guid":{"rendered":"https:\/\/fwq.ai\/blog\/50304\/"},"modified":"2024-12-03T17:47:57","modified_gmt":"2024-12-03T09:47:57","slug":"%e4%bd%bf%e7%94%a8-flask-sqlalchemy-%e6%9f%a5%e8%af%a2%e7%bb%93%e6%9e%9c%e5%a6%82%e4%bd%95%e8%bd%ac%e6%8d%a2%e4%b8%ba-json%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/50304\/","title":{"rendered":"\u4f7f\u7528 Flask-SQLAlchemy \u67e5\u8be2\u7ed3\u679c\u5982\u4f55\u8f6c\u6362\u4e3a JSON\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u4f7f\u7528 Flask-SQLAlchemy \u67e5\u8be2\u7ed3\u679c\u5982\u4f55\u8f6c\u6362\u4e3a JSON\uff1f<\/h1>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u4f7f\u7528 Flask-SQLAlchemy \u67e5\u8be2\u7ed3\u679c\u5982\u4f55\u8f6c\u6362\u4e3a JSON\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\"\u4f7f\u7528<\/p>\n

python sqlalchemy \u67e5\u8be2\u5982\u4f55\u8f6c\u6362\u4e3a json\uff1f<\/strong><\/p>\n

\u4f7f\u7528 flask \u548c flask-sqlalchemy \u65f6\uff0c\u9700\u8981\u5c06\u67e5\u8be2\u7ed3\u679c\u8f6c\u6362\u4e3a json \u683c\u5f0f\u4f9b\u524d\u7aef\u4f7f\u7528\u3002\u867d\u7136 flask-sqlalchemy \u672c\u8eab\u6ca1\u6709\u63d0\u4f9b\u8f6c\u6362\u65b9\u6cd5\uff0c\u4f46\u6709\u66ff\u4ee3\u65b9\u6848\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u3002<\/p>\n

\u66ff\u4ee3\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n

peewee<\/strong><\/p>\n

peewee \u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684 orm\uff0c\u53ef\u4e0e sqlalchemy \u534f\u540c\u5de5\u4f5c\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4fbf\u6377\u7684\u65b9\u6cd5 model_to_dict\uff0c\u53ef\u4ee5\u5c06\u67e5\u8be2\u7ed3\u679c\u8f6c\u6362\u4e3a\u5b57\u5178\uff0c\u518d\u8fdb\u4e00\u6b65\u8f6c\u6362\u4e3a json\u3002<\/p>\n

from playhouse.shortcuts import model_to_dict\n\n# \u4f8b\u5982\uff1a\nresults = db.session.query(user).all()\njson_list = [model_to_dict(result) for result in results]\n\n# json_list \u73b0\u5728\u5305\u542b\u7528\u6237\u96c6\u5408\u7684 json \u8868\u793a\u5f62\u5f0f<\/pre>\n
\u5176\u4ed6\u63d2\u4ef6\uff1a<\/strong><\/p>\n
flask-sqlalchemy-jsonify<\/strong><\/p>\n
\u6b64\u63d2\u4ef6\u53ef\u5728 flask-sqlalchemy \u4e2d\u6dfb\u52a0 jsonify_query \u65b9\u6cd5\uff0c\u7528\u4e8e\u76f4\u63a5\u5c06\u67e5\u8be2\u7ed3\u679c\u8f6c\u6362\u4e3a json\u3002<\/p>\n
@app.route('\/users')\ndef get_users():\n    users = user.query.all()\n    return jsonify(users)<\/pre>\n
marshmallow<\/strong><\/p>\n
marshmallow \u662f\u4e00\u4e2a\u6570\u636e\u5e8f\u5217\u5316\u5e93\uff0c\u53ef\u4e0e sqlalchemy \u4e00\u8d77\u4f7f\u7528\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a schema \u7c7b\uff0c\u7528\u4e8e\u5b9a\u4e49\u6a21\u578b\u548c json \u8868\u793a\u4e4b\u95f4\u7684\u6620\u5c04\u3002<\/p>\n
from marshmallow import Schema, fields\nfrom marshmallow_sqlalchemy import SQLAlchemyAutoSchema\n\n# \u7528\u6237\u6a21\u578b\nclass User(db.Model):\n    id = db.Column(db.Integer, primary_key=True)\n    username = db.Column(db.String(80), unique=True)\n\n# \u7528\u4e8e\u8f6c\u6362\u7528\u6237\u7684 Schema\nclass UserSchema(SQLAlchemyAutoSchema):\n    class Meta:\n        model = User\n\nschema = UserSchema()\ndata = schema.dump(User.query.all())\n\n# data \u73b0\u5728\u5305\u542b\u7528\u6237\u96c6\u5408\u7684 JSON \u8868\u793a\u5f62\u5f0f<\/pre>\n
\u6839\u636e\u9700\u8981\u9009\u62e9\u6700\u9002\u5408\u60a8\u7684\u66ff\u4ee3\u65b9\u6848\u3002peewee \u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u8f6c\u6362\u65b9\u6cd5\uff0cflask-sqlalchemy-jsonify \u4fbf\u4e8e\u5feb\u901f\u96c6\u6210\uff0c\u800c marshmallow \u5219\u63d0\u4f9b\u4e86\u9ad8\u5ea6\u7684\u7075\u6d3b\u6027\u3002<\/p>\n
\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u4f7f\u7528 Flask-SQLAlchemy \u67e5\u8be2\u7ed3\u679c\u5982\u4f55\u8f6c\u6362\u4e3a JSON\uff1f\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u7c73\u4e91\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528 Flask-SQLAlchemy \u67e5\u8be2\u7ed3\u679c\u5982\u4f55\u8f6c\u6362\u4e3a JSON\uff1f IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7c73\u4e91\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300a\u4f7f\u7528 Flask-SQLAlchemy \u67e5\u8be2\u7ed3\u679c\u5982\u4f55\u8f6c\u6362\u4e3a JSON\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01 python sqlalchemy \u67e5\u8be2\u5982\u4f55\u8f6c\u6362\u4e3a json\uff1f \u4f7f\u7528 flask \u548c flask-sqlalchemy \u65f6\uff0c\u9700\u8981\u5c06\u67e5\u8be2\u7ed3\u679c\u8f6c\u6362\u4e3a json \u683c\u5f0f\u4f9b\u524d\u7aef\u4f7f\u7528\u3002\u867d\u7136 flask-sqlalchemy \u672c\u8eab\u6ca1\u6709\u63d0\u4f9b\u8f6c\u6362\u65b9\u6cd5\uff0c\u4f46\u6709\u66ff\u4ee3\u65b9\u6848\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u3002 \u66ff\u4ee3\u89e3\u51b3\u65b9\u6848\uff1a peewee peewee \u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684 orm\uff0c\u53ef\u4e0e sqlalchemy \u534f\u540c\u5de5\u4f5c\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4fbf\u6377\u7684\u65b9\u6cd5 model_to_dict\uff0c\u53ef\u4ee5\u5c06\u67e5\u8be2\u7ed3\u679c\u8f6c\u6362\u4e3a\u5b57\u5178\uff0c\u518d\u8fdb\u4e00\u6b65\u8f6c\u6362\u4e3a json\u3002 from playhouse.shortcuts import model_to_dict # \u4f8b\u5982\uff1a results = db.session.query(user).all() json_list = [model_to_dict(result) for result in results] # json_list \u73b0\u5728\u5305\u542b\u7528\u6237\u96c6\u5408\u7684 json \u8868\u793a\u5f62\u5f0f \u5176\u4ed6\u63d2\u4ef6\uff1a flask-sqlalchemy-jsonify \u6b64\u63d2\u4ef6\u53ef\u5728 flask-sqlalchemy […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-50304","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/50304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=50304"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/50304\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=50304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=50304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=50304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}