Flask - Form send GET instead POST

Question

I wrote a simple form. For some reason, the form sends always GET requests instead of POST.

CODE EXAMPLE

 <form action="{{ url_for('home') }}" method="post"> <div class="row"> <div class="col-sm-12"> <input type="text" required dir="rtl" name="name" class="form-control" id="Name" placeholder=" שם "> </div> <div class="col-sm-12"> <input type="tel" required dir="rtl" name="phone" class="form-control" id="Phone" placeholder=" פלאפון "> </div> <div class="col-sm-12"> <input type="email" dir="rtl" name="email" class="form-control" id="Email" placeholder=" דוא'ל "> </div> <div class="col-sm-12"> <textarea class="form-control" dir="rtl" name="text" rows="5" id="Message" placeholder=" הודעה "></textarea> </div> <div class="col-sm-12 col-md-12 c-c-padding"> <button type="submit" name="send" id="contact_submit" class="btn btn-dm"> שלח </button> </div> </div> </form>

SERVER SIDE

@app.route('/', methods=["GET", "POST"]) def home(): print(request.method) if request.method == 'POST': name = request.form['name'] phone = request.form['phone'] email = request.form['email'] print(name + phone + email) if phone: requests.post('DOMAIN', auth=("api", 'API'), data={"from": "Email", "to": ["email"], "bcc": "", "subject": " ", "text": """ Name: {} Phone: {} Email: {} """.format(name, phone, email)}) flash(' welldone ', 'success') return redirect(url_for('home')) else: flash(' phone ', 'warning') return redirect(url_for('home')) return render_template('index.html')

After I press the 'submit' button. As I said, it sends GET request instead of a POST. Then something weird happens. It injects 'index.html' into the form - and what happens, is that I have a website inside the website.

First, what should I do to fix the problem of sending POST request instead of GET request. Second, why 'render_template()' injects the HTML into the form? Instead render the whole page?

Jonathan Ciapetti · Accepted Answer · 2022-07-02 22:43:41Z

Replace

return redirect(url_for('home'))

with

return redirect(request.url)

or

return redirect(request.referrer)

Why? If we read the docstring for url_for():

Generates a URL to the given endpoint with the method provided

We see that redirect(url_for('home')) tells Flask to redirect the client to the home() endpoint, which then calls redirect(url_for('home')) and so on in a looping cycle. When needed, call redirect(url_for('home')) from endpoints different than home().

From the docstrings for request.url and request.referrer:

request.url :

The full request URL with the scheme, host, root path, path, and query string.

request.referrer :

The Referer[sic] request-header field allows the client to specify, for the server's benefit, the address (URI) of the resource from which the Request-URI was obtained (the "referrer", although the header field is misspelled).

You can read more about them from these SO answers.

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