烧瓶错误请求错误；由于多个 POST 请求而发生 [重复]

Question

 <form method = "POST">
         <div class=" col-lg-4 col-lg-4 col-lg-4 col-lg-4">
            <div class="box">
                <input type="text" name="image-url" placeholder="Image URL Link"style="color:black" required="required" value = "new"/>
              <textarea cols=80 rows=4 style="color:black" name = "description" placeholder="Place your description here" value = "new"></textarea>
                <button type="submit">Upload</button>
                </div>
             </div>
            </form>                
    {% for i in range(amount_of_images) %}
         <div class=" col-lg-4 col-lg-4 col-lg-4 col-lg-4">
              <div class="box">
                <img src="{{image[i]}}" alt="view" width = "300" height = "300"/>
            <form method = "POST">
                <textarea cols=80 rows=4 style="color:black" name = "update-description" value = "update">{{description[i]}}</textarea>
                    <button type="submit">Update Description</button>
            </form>

以上是我的 HTML/Jinja 代码

@app.route("/gallery-manager", methods = ["GET", "POST"])
def gallery_manager():
if request.method == "POST":    
    if(request.form["image-url"] and request.form["description"]) is not None:
        model.add_new_image(request.form["image-url"], request.form["description"])
        id, image, description, amount_of_images = model.get_gallery()
        return render_template("gallery-manager.html", image = image, description = description, amount_of_images = amount_of_images, id = id)


    if request.form['update-description'] is not None:
        print("hello")



id, image, description, amount_of_images = model.get_gallery()
return render_template("gallery-manager.html", image = image, description = description, amount_of_images = amount_of_images, id = id)

以上是我的 Python/Flask 代码...

问题是，当我点击更新描述提交按钮时，也就是在 html 代码中处理的第二个 POST，我收到 400 错误

Bad Request
The browser (or proxy) sent a request that this server could not understand.

我意识到当 POST 字段之一为空且无法找到时会发生此错误。我知道发生这种情况是因为当我单击第二个 POST 提交按钮时，它会运行第一个 POST 检查（request.form["image-url"] 等并发现它很满意，因此想要运行该代码，但不能因为update-description 仍为空。如何避免这种情况。

换句话说，我如何处理多个 POST 方法。

谢谢，

Answer 1

这是因为您缺少表单中应该发送请求的操作部分

<form  action="/whereYouWantToSendRequest" method="post">

通过在上面替换它来添加您的 url 端点 whereYouWantToSendRequest

这是两个请求

  <input type="text" name="image-url" value = "new"/>
    <input type="text" name="update-description" value = "update"/>

并找出哪个请求

if request.form["image-url"] == "new":
     somethinggg
elif request.form["update-description"] =="update":
     sommmm