我正在创建一个搜索工具，该工具使用psycopg，flask和SQLAlchemy从Postgres数据库返回结果。
我收到错误消息：
sqlalchemy.engine.result.ResultProxy对象位于...
当我搜索“职位编号”时，就会发生这种情况。
我被认为这是由于未与ResultProxy接口，但我无法弄清楚哪里出了问题？
app.py
from flask import Flask, render_template, request
from sqlalchemy import create_engine
from sqlalchemy import text
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI']='postgresql://xx:xx@rx:x/xxx'
engine = create_engine('postgresql+psycopg2://xx:xxx@rx:x/x')
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db=SQLAlchemy(app)
@app.route('/', methods=['GET', 'POST'])
def homepage():
if request.method == 'POST':
jn = request.form['jobnumber']
result_set = engine.execute(text("SELECT cost FROM public.options where cast(optionno AS VARCHAR) LIKE :jn"), {"jn": f"%{jn}%"})
result_set.close()
return render_template('main.html', result_set=result_set, jn=jn)
else:
return render_template('main.html')
if __name__ == "__main__":
app.run(debug=True)
Main.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>xx</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="{{ url_for('static', filename='css/bootstrap.min.css') }}" rel="stylesheet">
<link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
</head>
<body>
<p>x</p>
<form method="POST" id="jobnumber">
<input name="jobnumber" type="textbox" placeholder="jobnumber">
</form>
<table>
<td>
{{result_set}}
</td>
</table>
</body>
</html>
任何帮助将不胜感激。
慕尼黑8549860
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