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Python Flask Basics Character Builder Forms

igsm '
igsm '
10,440 Points
Posted by igsm '
igsm '
10,440 Points

What does ...methods['POST']) mean?

Kenneth Love : 'I want this to only be accessible, if you post to it...'?

@app.route('/save', methods=['POST'])

What does this mean and where does methods=['POST'] come from?

3 Answers

Andreas cormack
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Andreas cormack
Python Web Development Techdegree Graduate 33,011 Points

here is a link that might help with GET and POST http://www.cs.tut.fi/~jkorpela/forms/methods.html

igsm '
igsm '
10,440 Points
igsm '
igsm '
10,440 Points

Thanks. This's helpful.

Andreas cormack
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.a{fill-rule:evenodd;}techdegree seal-36
Andreas cormack
Python Web Development Techdegree Graduate 33,011 Points
Andreas cormack
.a{fill-rule:evenodd;}techdegree seal-36
Andreas cormack
Python Web Development Techdegree Graduate 33,011 Points

Hi igors

there are two http methods GET and POST. I think of it as GET being getting something from the url to be used in the view and POST posting values to the view. So if a user visits yourdomain/save/2 your getting the value 2 from the url which could be an ID of some sort and is GET request. POST is normally values coming from a form. In flask if your posting values from a form for example your route should look like this or you will get the error 'not allowed'.

@app.route('/save',methods=['GET','POST'])
def save():
    #if you want to execute code only when the request is post you can do this
    if request.method=='POST':
        #do something.

If you are using WT forms then it is quite smart and you wont need the request.method line.

igsm '
igsm '
10,440 Points
igsm '
igsm '
10,440 Points

Ok. I kind of understood the POST bit. Still struggle to understand GET. I tested it in two ways, using GET and POST. So when I have only POST as a method, I get a new view (what function returns) if I submit a value through the form. For example, if we take a case from the video tutorial; I get to the next view (route) 'Saved!' if I submit a value in the form (this is with having POST as a method). If I have GET as a method, my submission through the form does not work, it works only if I add a route manually into URL.

Not sure if that makes sense but why do we need GET method and when should we use it?