Question

我正在尝试创建一个在线书店。我真的无法弄清楚这段代码有什么问题。它显示以下错误：

werkzeug.exceptions.HTTPException.wrap.<locals>.newcls: 400 Bad Request: KeyError: 'roomno'

@app.route('/order_book',methods=['GET','POST'])
def order_book():
    if not session.get('logged_in'):
        return render_template('user_login.html')
    user_id=session['userid']
    cur=connection.cursor()
    cur.execute("SELECT * FROM address WHERE user_id=%s",[user_id])
    addr_data=cur.fetchone()
    if request.method == 'POST':
        book_id = request.form['book_id1']
    if not addr_data:
        if request.method == 'POST':
            room_no = request.form['roomno']
            building = request.form['building']
            street = request.form['street']
            city = request.form['city']
            zipcode = request.form['zipcode']
            cur.execute("INSERT INTO address(user_id,room_no,building,street,city,zipcode) VALUES(%s,%s,%s,%s,%s,%s)",(userid,room_no,building,street,city,zipcode))
            connection.commit()
            print('Address Added')
            return redirect(url_for('order_book'))
        return render_template('address.html')
    cur.execute("SELECT * FROM books WHERE book_id=%s",[book_id])
    book_data=cur.fetchone()
    cur.execute("SELECT * FROM login WHERE user_id=%s",[user_id])
    cust_data=cur.fetchone()
    cur.close()
    print(cust_data)
    print(addr_data)
    print(book_data)
    return render_template('order_book.html',addr_data=addr_data,book_data=book_data,cust_data=cust_data)

html代码

order.html

<html>  
<h1>PLACE ORDER</h1><br>



            <h5><a class="card-title" id="" href="">{{ books_data[0] }}</a></h5>
            <h4>{{ books_data[1] }}</h4>
            <span>{{ books_data[2] }}</span>


<form action="placeorder" method="POST">
  <div class="nav-link">
  <div class="form-group">
    Room no<br><input type="text" name="roomno"  value={{ addr_data[2] }} disabled><br><br>
    building<br><input type="text" name="building"  value={{ addr_data[3] }} disabled><br><br>
    street<br><input type="text" name="street"  value={{ addr_data[4] }} disabled><br><br>
    city<br><input type="text" name="city"  value={{ addr_data[5] }} disabled><br><br>
    zipcode<br><input type="text" name="zipcode"  value={{ addr_data[6] }} disabled><br><br>
    Mobilenumber<br><input type="text" name="phoneno"  value={{ cust_data[4] }} disabled><br><br>
    Email<br><input type="text" name="emailids"  value={{ cust_data[3] }} disabled><br><br>
<input type="text" name="book_id"  value={{ book_data[1] }} style="display:none">
<input type="text" name="user_id"  value={{ cust_data[0] }} style="display:none">
 <input type="text" name="book_price"  value={{ book_data[8] }} style="display:none">
  <input type="submit" class="btn btn-primary" value="Place Order">
</form>
</div>
</div>
</html>

我尝试更改html页面，并尝试更改数据库。我不知道该怎么办。

Answer 1

问题是您的输入字段被标记为禁用。禁用的输入将不会发布。有关更多信息，请参见Values of disabled inputs will not be submitted。根据您是否希望用户看到输入，一些解决方法是改用readonly="readonly"或<input type="hidden">。您还可以在提交表单时通过JavaScript删除禁用的标签。进行上述任何操作都会导致正确输入您的输入值，然后Flask后端将接收到数据。

400错误的请求：KeyError：

1 个答案: