typeahead autocomplete suggestion with ajax doesn't work
Question
let's say I type for example "j" and I should see autocomplete like for example John with more suggestions below input tag, but I don't. In my console I get ["John", "Jane"] , no errors.
test.html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8"/>
</head>
<body>
<div id="aa">
<input class="typeahead" type="text" placeholder="names">
</div>
<script src="../static/jquery-1.11.3.min.js"></script>
<script src="../static/typeahead.bundle.js"></script>
<script>
$('#aa .typeahead').typeahead(null, {
source: function (query, process) {
$.ajax({
url: '/test/',
type: 'GET',
contentType: "application/json; charset=utf-8",
data: {'query': query},
success: function(data) {
console.log(data.options);
process(data.options);
}
});
}
});
</script>
</body>
</html>
app.py
from flask import Flask, render_template, url_for, jsonify, request
app = Flask(__name__)
@app.route('/')
def index():
return render_template('test.html')
@app.route('/test/')
def test():
print request.args.get('query')
return jsonify(options=["John","Jane"])
if __name__ == '__main__':
app.run(debug = True)
2 answers
solution1
1 ACCPTED 2015-06-20 00:06:00
I think Typeahead has been updated, and now your code won't work.
Try this:
<html lang="en">
<head>
<meta charset="utf-8"/>
</head>
<body>
<div id="aa">
<input class="typeahead" type="text" placeholder="names">
</div>
<script src="../static/jquery-1.11.3.min.js"></script>
<script src="../static/typeahead.bundle.js"></script>
<script>
var engine = new Bloodhound({
remote: {
url: '/test/?query=*',
wildcard: '*',
transform: function (response) {
return response.options;
}
},
queryTokenizer: Bloodhound.tokenizers.whitespace,
datumTokenizer: Bloodhound.tokenizers.whitespace,
});
$('#aa .typeahead').typeahead(null, {
name: 'my-dataset',
source: engine
});
</script>
</body>
</html>
For more information, see the Typeahead.js docs on Bloodhound .
solution2
0 2015-10-06 07:56:43
Actually, your code can work fine...if you know what changed.
What changed? The signature of the source function!
Instead of 1 process function, there are now 2. The first is for synchronous operation. The second is for asynchronous operation. Change
source: function (query, process) {
to
source: function (query, dummy, process) {
and the code in the original post should work fine...
...except, there is a bug in the async processor. See TypeAhead.js and Bloodhound showing an odd number of results
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