在查询的时候是使用ajax进行请求的
目录结构
personal.models
from datetime import datetimefrom flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()
class Department(db.Model): """ 部门 """ __tablename__ = ‘department‘ # primary_key=True：主键, autoincrement=True：自动递增 id = db.Column(db.Integer, primary_key=True, autoincrement=True) name = db.Column(db.String(50), unique=True)
def __init__(self, name): self.name = name
def __repr__(self): return f‘部门{self.id}，{self.name}‘
class Employee(db.Model): """ 员工 """ __tablename__ = ‘employee‘ # primary_key=True：主键, autoincrement=True：自动递增 id = db.Column(db.Integer, primary_key=True, autoincrement=True) name = db.Column(db.String(50)) gender = db.Column(db.String) job = db.Column(db.String) birthdate = db.Column(db.Date) idcard = db.Column(db.String) address = db.Column(db.String) salary = db.Column(db.Float) release_time = db.Column(db.DateTime)
# 外键： db.Column(db.Integer, db.ForeignKey(表名)) department_id = db.Column(db.Integer, db.ForeignKey(‘department.id‘)) # 声明是外键，为department表的id字段
# db.relationship(‘Department‘, backref=db.backref(‘employee‘, lazy=‘dynamic‘)) # db.relationship(主键类名, backref=引用属性名, lazy=‘dynamic‘)) # lazy：延迟查询：dynamic：动态、select、subquery、joined department = db.relationship(‘Department‘, backref=db.backref(‘employee‘, lazy=‘dynamic‘)) # 类与表的关系
def __init__(self, name=None, gender=None, job=None, birthdate=None, idcard=None, address=None, salary=None, release_time=None): self.name = name self.gender = gender self.job = job self.birthdate = birthdate self.idcard = idcard self.address = address self.salary = salary self.release_time = release_time if release_time else datetime.now()
def __repr__(self): return f‘员工：{self.id} {self.name} {self.salary} {self.address}‘
if __name__ == ‘__main__‘: db.create_all()
html
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.min.js"></script> <title>ajax员工查询</title></head><body><h1>ajax员工查询</h1>名称：<input type="text" id="name"><p> <button id="btnLoad">Load查询员工</button> <button id="btnGet">GET查询员工</button> <button id="btnAjax">ajax查询员工</button></p><div id="emp-list"></div></body></html><script> $(document).ready(function () {
// load方法 $(‘#btnLoad‘).click(function () { var name = $(‘#name‘).val(); // 获取查询条件 $(‘#emp-list‘).load(‘/employee/?name=‘ + name); // 把查询条件和地址拼接起来 });
// get方法 $(‘#btnGet‘).click(function () { var name = $(‘#name‘).val(); // 获取查询条件 $.get( ‘/employee/‘, {‘name‘: name}, function (response) { $(‘#emp-list‘).html(response); // 把返回的html加到id为emp-list的标签下 } ); });
// ajax方法 $(‘#btnAjax‘).click(function () { $.ajax({ url: ‘/employee/‘, data: {‘name‘: $(‘#name‘).val()}, method: ‘GET‘, success: function (response) { $(‘#emp-list‘).html(response); // 把返回的html加到id为emp-list的标签下 } }); }); });</script>
main.py
from flask import Flask, render_template, requestfrom flask_sqlalchemy import SQLAlchemyfrom personal.models import Employee
app = Flask(__name__, static_url_path=‘‘)db = SQLAlchemy(app)
app.config[‘SQLALCHEMY_DATABASE_URI‘] = ‘sqlite:///./db/test.db‘ # 声明数据库类型和地址app.config[‘SQLALCHEMY_TRACK_MODIFICATIONS‘] = True # 跟踪改变
# app.config[‘SQLALCHEMY_ECHO‘] = True # 打印对应的sql，此操作用sql是怎么样的
@app.route(‘/employee/‘)def employee_query(): """ 这里图省事，就根据前端出过来的值，进行查询，并把查询出来的结果拼接成表格返回到前端 """ name = request.args.get(‘name‘, ‘‘) table_header = """ <table border="1"> <tr> <th>ID</th> <th>姓名</th> <th>地址</th> <th>工资</th> </tr> """ emps = Employee.query.filter(Employee.name.contains(name)).all() rows = "" for emp in emps: rows += f"""<tr><td>{emp.id}</td><td>{emp.name}</td><td>{emp.address}</td><td>{emp.salary}</td></tr>""" table_footer = "</table>" return table_header + rows + table_footer
@app.route(‘/ajax_query/‘)def ajax_query(): return render_template(‘emp-query.html‘)
前端
load
get
ajax
原文地址：https://www.cnblogs.com/zhongyehai/p/11565452.html
时间： 2024-07-31 19:43:57