post request error with flask

Question

I'm trying to make a CRUD REST API with Flask en SQlALchemy. I'm making request with the curl command on the linux shell but I cant get it to work. If I open a python shell and add the things manually they get added to the database.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>400 Bad Request</title>
<h1>Bad Request</h1>
<p>The browser (or proxy) sent a request that this server could not understand.</p>

@app.route('/create', methods = ['POST'])
def create():
    username = request.form['username']
    age = request.form['age']
    email = request.form['email']

curl -X POST -F 'username=Juliana' -F 'age=87' -F 'email=juliana@.com' http://localhost:5000/create

lol, thats the error, it's saying that my server didnt understand my curl request. I'm almost sure its something wrong with my curl request — Eric Murta, Apr 14 '17 at 04:15
Possible duplicate of [What is the cause of the Bad Request Error when submitting form in Flask application?](http://stackoverflow.com/questions/14105452/what-is-the-cause-of-the-bad-request-error-when-submitting-form-in-flask-applica) — Priyank Mehta, Apr 14 '17 at 05:49

score 0 · Answer 1 · edited May 23 '17 at 11:54

the issue is that Flask raises an HTTP error when it fails to find a key in the args and form dictionaries. What Flask assumes by default is that if you are asking for a particular key and it's not there then something got left out of the request and the entire request is invalid.

check:

change your create view to the following code and check output:

@app.route('/create', methods = ['POST'])
def create():
    username = request.form.get('username', '')
    age = request.form.get('age', '')
    email = request.form.get('email', '')
    print username, age, email

    # dbcreate = Profile(username, age, email)
    # db.session.add(dbcreate)
    # db.session.commit()
    # print 'User Created'

post request error with flask

1 Answers1