CODEWITHSUNDEEP
pythonajaxpython-2.7flaskjinja2
anon
anon

Reputation:

Python Flask: Different render_template for Get and Post Methods Possible?

I have a template (index.html) that I would like to display on GET and the same template, with a variable added, on POST.

app.py:

from flask import Flask, render_template
app = Flask(__name__)

@app.route("/")
def hello():
    return render_template("index.html")

@app.route("/", methods=["POST"])
def hello_():
    return render_template("index.html", string_="Success!")

if __name__ == "__main__":
    app.run(host='0.0.0.0', port=4567)

index.html:

<html>
    <head>
        <script type="text/javascript" src="/static/jquery.js"></script>
    </head>

    <body>

    <button onclick="signIn();">Sign In</button>
    <h1>{{ string_ }}</h1>

    <script>
        function signIn() {
        var data = "data";

        $.ajax({
            type : "POST",
            data: JSON.stringify(data, null, '\t'),
            contentType: 'application/json',
            success: function(result) {
                console.log(result);
                }
              });
        }
    </script>
    </body>
</html>

traceback:

 * Running on http://0.0.0.0:4567/ (Press CTRL+C to quit)
127.0.0.1 - - [11/Dec/2015 11:16:17] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [11/Dec/2015 11:16:17] "GET /static/jquery.js HTTP/1.1" 304 -
127.0.0.1 - - [11/Dec/2015 11:16:21] "POST / HTTP/1.1" 200 -

I'm not receiving an error, but the variable string_ isn't appearing in the template on POST (after I click the button). It appears that the template I have set to render on POST isn't working.

Is it possible to render a different template in Flask based on request.method?

Upvotes: 3

Views: 7586

Answers (1)

Makoto
Makoto

Reputation: 106450

It makes the most sense to split this into two distinct routes, one serving the GET and one serving the POST.

@app.route('/')
def index_as_get():
    return render_template('index.html', name="")

@app.route('/', methods=["POST"])
def index_as_post():
    r = request.get_json()
    name = r['name']
    return render_template('index.html', name=name)

Note that you actually have to invoke this behavior through a REST client that can invoke a POST request to your root page before you can notice anything.

Upvotes: 1

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