I am pulling stock symbols from Yahoo finance in a json object and I am trying to show them as a drop-down menu while the user starts typing the name of the company or the symbol in the search box .
Typeahead is not working as a drop down menu from the search box. This is the code I have so far.
If I dump the $data or $result in the suggest.php while substituting {$_POST['symbol']} with goog for example I am getting an array back. So, I am thinking that either suggest.php echo is not returning anything or suggest.php is not being called from the quote.js file.
If I remove the if statement in suggest.php and substitute {$_POST['symbol']} with goog and then go to http://localhost/suggest.php shouldn't echo print something?
Any help is appreciated. I am new to web development and trying to learn.
quote.js
$(document).ready(function() {
// create autocomplete
$('#form-quote input[name=symbol]').typeahead({
// load autocomplete data from suggest.php
source: function(query, callback) {
$.ajax({
url: '../suggest.php',
type: 'POST',
dataType: 'json',
data: {
symbol: query
},
success: function(response) {
callback(response.symbols);
}
});
}
});
// load data via ajax when form is submitted
$('#form-quote').on('click', function() {
// determine symbol
var symbol = $('#form-quote input[name=symbol]').val();
// send request to quote.php
$.ajax({
url: 'quote.php',
type: 'POST',
data: {
symbol: symbol
},
success: function(response) {
$('#price').text(response);
}
});
return false;
});
});
quote.php
<?php
//configuration
require("../includes/config.php");
//if form was submitted
if($_SERVER["REQUEST_METHOD"] == "POST"){
$stock = lookup(strtoupper($_POST["symbol"]));
if(empty($_POST["symbol"])){
//echo "You must enter a stock symbol";
}else if($_POST["symbol"]){
$price = number_format($stock['price'], 2);
echo "A share of {$stock['name']} costs $$price";
}
}
else{
// render portfolio
render("stock_search.php", ["title" => "Get Quote"]);
}
?>
quote_search.php
<form id = "form-quote" action="quote.php" method="post">
<fieldset>
<div class="control-group">
<input name="symbol" autofocus autocomplete="off" placeholder="Symbol" type="text"/>
</div>
<div class="control-group">
<button type="submit" class="btn">Get Quote</button>
</div>
</fieldset>
<div id="price"></div>
<div id="suggestions"></div>
</form>
<script type="text/javascript" src="js/quote.js" ></script>
suggest.php
<?php
// configuration
require("../includes/functions.php");
// if form was submitted
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
// load suggestion data
$data = @file_get_contents("http://d.yimg.com/aq/autoc?query= {$_POST['symbol']}®ion=US&lang=en-US&callback=YAHOO.util.ScriptNodeDataSource.callbacks");
// parse yahoo data into a list of symbols
$result = array();
$json = json_decode(substr($data, strlen('YAHOO.util.ScriptNodeDataSource.callbacks('), -1));
foreach ($json->ResultSet->Result as $stock)
$result[] = $stock;
echo json_encode(array('symbols' => $result]));
}
?>
