Cannot get HTML to display SQLite3 data with python & flask
Question
I'm having an issue getting an HTML page to display my SQLite3 data using Python & Flask. I found a question on here and used the same code, plus different variations to no success. There are no error messages and the HTML page loads, however there is no data present. This is the code I am using to get the data;
@app.route("/viewpackages", methods=['GET'])
def viewpackages():
con = sqlite3.connect('utpg.db')
db = con.cursor()
user_id = session.get('id')
getpackages = db.execute("SELECT pck_id, client_id, date, price, privatelesson,"
"shortgamelesson, playinglesson, notes FROM packages WHERE client_id = ?;", (user_id, ))
return render_template("view_packages.html", items=getpackages.fetchall())
this is the code I attempting to use to display the data;
<table>
{% for item in items %}
<tr>
<td>{{column1}}</td>
<td>{{column2}}</td>
<td>{{column3}}</td>
<td>{{column4}}</td>
<td>{{column5}}</td>
<td>{{column6}}</td>
<td>{{column7}}</td>
<td>{{column8}}</td>
</tr>
{% endfor %}
</table>
I tried changing 'column' to the actual db column name, with the same issue. I tried calling SELECT * instead of each individual column, same issue. If I run this code in python;
con = sqlite3.connect('utpg.db')
db = con.cursor()
user_id = session.get('id')
getpackages = db.execute("SELECT pck_id, client_id, date, price, privatelesson, shortgamelesson, playinglesson, notes FROM packages WHERE client_id = ?;", (user_id, ))
packages = getpackages.fetchall()
for row in packages:
print(row)
It returns the desired results. So I am thinking there is an issue with the HTML somewhere but I cannot figure it out.
2 answers
solution1
4 2016-10-02 12:27:48
Please try the following code and let me know if it works for you:
<table>
{% for item in items %}
<tr>
<td>{{ item[0] }}</td>
<td>{{ item[1] }}</td>
<td>{{ item[2] }}</td>
<td>{{ item[3] }}</td>
<td>{{ item[4] }}</td>
<td>{{ item[5] }}</td>
<td>{{ item[6] }}</td>
<td>{{ item[7] }}</td>
</tr>
{% endfor %}
</table>
Test with the following code:
app.py
from flask import Flask, render_template
import sqlite3
app = Flask(__name__)
app.secret_key = 'development key'
@app.route('/users')
def get_users():
con = sqlite3.connect('mydb.db')
db = con.cursor()
db.execute('insert into user values ("Aaa", "AAA")')
db.execute('insert into user values ("Bbb", "BBB")')
res = db.execute('select * from user')
return render_template('users.html', users=res.fetchall())
if __name__ == "__main__":
app.run(host="0.0.0.0", debug=True)
templates/users.html
<html !DOCTYPE>
<head>
<title>SQLite</title>
</head>
<body>
<table>
{% for user in users %}
<tr>
<td>{{ user[0] }}</td>
<td>{{ user[1] }}</td>
</tr>
{% endfor %}
</table>
</body>
</html>
solution2
2 2016-10-02 13:13:20
Here is what I had to do.. For anyone else having this issue, I'm not sure why but Jinja did not want to let me access by index so I did..
@app.route("/viewpackages", methods=['GET'])
def viewpackages():
con = sqlite3.connect('utpg.db')
con.row_factory = sqlite3.Row
db = con.cursor()
user_id = session.get('id')
getpackages = db.execute("SELECT pck_id, client_id, date, price, privatelesson,"
"shortgamelesson, playinglesson, notes FROM packages WHERE client_id = ?;", (user_id, ))
return render_template("view_packages.html", items=getpackages.fetchall())
and change the HTML to..
<table>
{% for col in items %}
<tr>
<td>{{ col['pck_id'] }}</td>
<td>{{ col['client_id'] }}</td>
<td>{{ col['date'] }}</td>
<td>{{ col['price'] }}</td>
<td>{{ col['privatelesson'] }}</td>
<td>{{ col['shortgamelesson'] }}</td>
<td>{{ col['playinglesson'] }}</td>
<td>{{ col['notes'] }}</td>
</tr>
{% endfor %}
</table>
All working now, thank for pointing me in the right direction!
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.