What's wrong with this Flask request?

Question

I have been working with flask for a long while, but after a break from it, I cant seem to figure out what's wrong here.

index.html:

<input name="linkHolder" type="url" class="defaultTextBox advancedSearchTextBox link" placeholder="http://www.youtube.com">

<form method="POST" action="/button">
    <input class="btn" type="submit">Go</input>
</form>

main.py:

  @app.route('/button', methods=["GET", "POST"])
  def button():
    if request.method == "POST":
      dlink = request.form.get("linkHolder")
      print(dlink)
      return render_template("index.html", dlink=dlink)

I'm sorry if its a simple answer but my end goal here is to load the link typed by the user, print said link, and then reload the page. What am I doing wrong?

I believe you need to put the input into the form – Paulina Khew Sep 10 '21 at 15:02 — Paulina Khew, Sep 10 '21 at 15:02
How would I go about that? – TutorialWarrior 9776 Sep 10 '21 at 15:03 — TutorialWarrior 9776, Sep 10 '21 at 15:03

Paulina Khew · Accepted Answer · 2021-09-10T15:11:04.360

In your index.html, your <form> tag does not include the linkHolder input. Do the following:

<form method="POST" action="/button">
    <input name="linkHolder" type="url" class="defaultTextBox advancedSearchTextBox link" placeholder="http://www.youtube.com">
    <input class="btn" type="submit">Go</input>
</form>

You might also need an if statement in main.py that actually renders the page

  @app.route('/button', methods=["GET", "POST"])
  def button():
    if request.method == "GET":
        return render_template("index.html")
    if request.method == "POST":
      dlink = request.form.get("linkHolder")
      print(dlink)
      return render_template("index.html", dlink=dlink)

score 0 · Answer 2 · answered Sep 10 '21 at 15:05

You need a form with the name Also, your tag </input> input doesn't have any closing tag you should be using button tag

<form method="POST" action="/button">
    <input type="text" name="linkHolder">
    <button class="btn" type="submit">Go</button>
</form>

What's wrong with this Flask request?

2 Answers2