I have setup a Flask app on a VPS and everything seems to work fine; When i restart apache everything works fine and i got this: html table
if I reload the browser page the data disappear and only remains the table header; if I want to see again the data I have to restart the apache server, and this is the big problem that I can't figure out.
my data stricture is the following:
|----FlaskApp
|---------FlaskApp
| +----main.html
|--------------static
|--------------templates
| +----elenco.py
| +----__init__.py
What I try to do is to connect to a SQL Server DB with _mssql, query the database and display the results in a html table. This is the content of the files:
init.py
from flask import Flask, render_template
import _mssql
from elenco import Elenco_chiamate
Chiamate = Elenco_chiamate()
app = Flask(__name__)
@app.route('/')
def homepage():
return render_template("main.html", chiamate_html = Chiamate)
if __name__ == "__main__":
app.run()
elenco.py
import _mssql
def Elenco_chiamate():
conn = _mssql.connect(server='xxxxxxx', user='xxxxx', password='xxxxx')
conn.execute_row('SELECT TOP 100 * FROM ASSET_VIEW')
return conn
conn.close()
main.html
<!DOCTYPE html>
<html lang="it">
<head>
<meta charset="utf-8">
<title>Python Programming Tutorials</title>
<script
src="https://code.jquery.com/jquery-3.1.1.min.js"
integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8="
crossorigin="anonymous"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
</head>
<body>
<table class="table table-striped table-bordered table-hover table-condensed">
<tr>
<th>
INVENTARIO
</th>
<th>
SERIALE
</th>
<th>
APPARECCHIATURA
</th>
</tr>
{% for row in chiamate_html %}
<tr>
<td>{{row['NUM']}}</td>
<td>{{row['N_SERI']}}</td>
<td>{{row['NOM']}}</td>
</tr>
{% endfor %}
</table>
</body>
</html>
You are calling
Elenco_chiamate()at module level, so it will only be called once - when the module is first imported.Call it inside the view function instead.