我正在尝试使用Ajax处理我的Flask应用程序中的表单。

以下是我现在拥有的代码:

Flask/Python:

@main.route('/reply/', methods=["GET", "POST"])
def reply():
    if request.method == "POST":

        reply = request.form['reply']
        reply_to_id = request.form['reply_to_id']
        

        if reply:
            now = datetime.now()
            formatted_date = now.strftime("%Y-%m-%d %X")
            reply_to_id = request.form.get("reply_to_id")
            blarg_db.replies.insert({"reply_to_id": reply_to_id, "username": current_user.username, "date": formatted_date, "reply": reply})

            return jsonify({'reply': reply})

    return redirect(url_for('main.home'))

Ajax:

@main.route('/reply/', methods=["GET", "POST"])
def reply():
    if request.method == "POST":

        reply = request.form['reply']
        reply_to_id = request.form['reply_to_id']
        

        if reply:
            now = datetime.now()
            formatted_date = now.strftime("%Y-%m-%d %X")
            reply_to_id = request.form.get("reply_to_id")
            blarg_db.replies.insert({"reply_to_id": reply_to_id, "username": current_user.username, "date": formatted_date, "reply": reply})

            return jsonify({'reply': reply})

    return redirect(url_for('main.home'))

HTML:

@main.route('/reply/', methods=["GET", "POST"])
def reply():
    if request.method == "POST":

        reply = request.form['reply']
        reply_to_id = request.form['reply_to_id']
        

        if reply:
            now = datetime.now()
            formatted_date = now.strftime("%Y-%m-%d %X")
            reply_to_id = request.form.get("reply_to_id")
            blarg_db.replies.insert({"reply_to_id": reply_to_id, "username": current_user.username, "date": formatted_date, "reply": reply})

            return jsonify({'reply': reply})

    return redirect(url_for('main.home'))

在代码原样的情况下，我总是得到一个400 Bad Request错误，但是当我移除AJAX代码数据部分中的第二个变量时，就可以工作了:

@main.route('/reply/', methods=["GET", "POST"])
def reply():
    if request.method == "POST":

        reply = request.form['reply']
        reply_to_id = request.form['reply_to_id']
        

        if reply:
            now = datetime.now()
            formatted_date = now.strftime("%Y-%m-%d %X")
            reply_to_id = request.form.get("reply_to_id")
            blarg_db.replies.insert({"reply_to_id": reply_to_id, "username": current_user.username, "date": formatted_date, "reply": reply})

            return jsonify({'reply': reply})

    return redirect(url_for('main.home'))

如何将两个变量都添加到AJAX数据中并避免此错误？

顺晟科技：

我不明白为什么第二个变量会引发错误。 因为我认为您可以简化代码，所以我将给出以下示例。

@main.route('/reply/', methods=["GET", "POST"])
def reply():
    if request.method == "POST":

        reply = request.form['reply']
        reply_to_id = request.form['reply_to_id']
        

        if reply:
            now = datetime.now()
            formatted_date = now.strftime("%Y-%m-%d %X")
            reply_to_id = request.form.get("reply_to_id")
            blarg_db.replies.insert({"reply_to_id": reply_to_id, "username": current_user.username, "date": formatted_date, "reply": reply})

            return jsonify({'reply': reply})

    return redirect(url_for('main.home'))

我建议使用表单的submit事件。

所有表单数据都使用name属性进行序列化，然后使用Ajax进行传输。在服务器端，可以使用名称请求这些值。

若要禁止某些字段的显示，应使用类型为“hidden”的字段。

@main.route('/reply/', methods=["GET", "POST"])
def reply():
    if request.method == "POST":

        reply = request.form['reply']
        reply_to_id = request.form['reply_to_id']
        

        if reply:
            now = datetime.now()
            formatted_date = now.strftime("%Y-%m-%d %X")
            reply_to_id = request.form.get("reply_to_id")
            blarg_db.replies.insert({"reply_to_id": reply_to_id, "username": current_user.username, "date": formatted_date, "reply": reply})

            return jsonify({'reply': reply})

    return redirect(url_for('main.home'))

通过这种方式，您可以轻松地传输所有值。