数据库连接配置
创建实体类
配置打印SQL语句
或、与、非和排序
数据库连接配置HOST = "XXXXXXXXXXXXX"
PORT = 3310
USERNAME = "root"
PASSWORD = "@XXXXXXXXXXX"
DATABASE = "mydb"
SQLALCHEMY_DATABASE_URI = f"mysql+pymysql://{USERNAME}:{quote(PASSWORD)}@{HOST}:{PORT}/{DATABASE}?charset=utf8mb4"
SQLALCHEMY_TRACK_MODIFICATIONS = False
SQLALCHEMY_ECHO = True
创建实体类
from exts.DBServer import db
from sqlalchemy import Column, Integer, String, Date, DateTime
class Article(db.Model):
__tablename__ = "article"
id = Column(Integer, primay_key=True, autoincrement=True)
title = Column(String(100), nullable=True)
pub_time = Column(DateTime, nullable=True)
author = Column(String(100), nullable=True)
content = Column(String(10000), nullable=True)
origin = Column(String(1000), nullable=True)
controller:
import json
from flask.blueprints import Blueprint
from exts.DBServer import db
from ..model.Article import Article
from flask_sqlalchemy.query import Query
from flask_restful import marshal
from flask_restful import fields
article_bp = Blueprint("article", __name__, url_prefix="/article")
article_fields = {
"id": fields.Integer,
"title": fields.String,
"pub_time": fields.DateTime,
"author": fields.String,
"content": fields.String,
"origin": fields.String
}
@article_bp.route("/queryAll")
def queryAll():
query: Query = Article.query
articles = query.all()
article = query.get(1)
article2 = query.filter_by(author="XXX")
return json.dumps(marshal(articles, fields=article_fields),ensure_ascii=False)
配置打印SQL语句
from exts.DBServer import db
from sqlalchemy import Column, Integer, String
class User(db.Model):
__tablename__ = "user"
id = Column(Integer, primary_key=True, autoincrement=True)
username = Column(String(100), nullable=True)
password = Column(String(100), nullable=True)
def __repr__(self):
return "User %r" % self.body
或、与、非和排序
@user_bp.route("/query")
def query_match():
query: Query = User.query
result = query.filter(or_(User.username.contains("祥"), User.id == 1))
return json.dumps(marshal(result.all(), fields=user_fields), ensure_ascii=False)
@user_bp.route("/in")
def in_sql():
query: Query = User.query
result = query.order_by(-User.password, -User.id)
return json.dumps(marshal(result.all(), fields=user_fields), ensure_ascii=False)
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