I'm new to this and making a small Flask app.
I've gone through everything similar I can find online, but I still can't get a minimal working example of passing data from client-side to server-side using AJAX.
Here is the relevant HTML:
<script type=text/javascript>
$(function() {
$('a#test_function').bind('click', function() {
$.ajax({
url: $SCRIPT_ROOT + '/test',
data: JSON.stringify({ "value":'asdf' }),
type: 'POST'
success: function(response) {
console.log(response);
},
error: function(error) {
console.log(error);
}
});
});
});
</script>
<h1>jQuery Example</h1>
<a href=# id=test_function>get string</a>
And here is the .py file:
import os
from flask import Flask, request, session, g, redirect, url_for, abort, render_template, flash, jsonify, json
# create our little application :)
app = Flask(__name__)
# Load default config and override config from an environment variable
app.config.update(
DATABASE=os.path.join(app.root_path, 'mydb.db'),
DEBUG=True,
SECRET_KEY='something',
SERVER_NAME='http://localhost:5000'
)
@app.route('/')
def welcome():
flash('Welcome!')
return render_template('index.html')
@app.route('/test', methods=['GET', 'POST'])
def test():
vars = request.data
return ', '.join([str(i) for i in vars])
When I run the server and attempt to run the post request, I get the following error:
POST http://127.0.0.1:5000/test 404 (NOT FOUND)
Any help greatly appreciated!
To POST JSON data via XHR to Flask the method I use is to set the Content-Type
heading to "application/json"
. Then you can access this within Flask from the request.data
object. I cleaned up a couple typos as well.
Javascript/HTML:
<script type="text/javascript">
$SCRIPT_ROOT = {{ request.script_root|tojson|safe }};
$(function() {
$('a#test_function').bind('click', function() {
$.ajax({
type: "POST",
headers: {"Content-Type": "application/json"},
url: $SCRIPT_ROOT + "/test",
data: JSON.stringify({"key": "value"}),
success: function(response) {
console.log(response);
},
error: function(response, error) {
console.log(response);
console.log(error);
}
});
});
});
</script>
<h1>jQuery Example</h1>
<a href="#" id="test_function">get string</a>
Python:
@app.route('/test', methods=['GET', 'POST'])
def test():
vars = request.data
return ', '.join([str(i) for i in vars])
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