Relax under palm trees.: couchdb

Tuesday, March 13, 2012

Ajax jQuery style

I am trying out the comma-first style for my objects. I got errors many times when I added a new pair to an object list because I didn't add a comma to the last pair.

Although curl gives a more informative message, I cannot get the same information out of statusCode 412.

<html>
<head>
<script type="text/javascript" src="jquerymin.js"></script>
<script type="text/javascript">
function initialize() {
$.ajax({
type: "PUT"
, url: "http://127.0.0.1/couchdb/albums"
, success: function(data) {
alert(data);
}

, statusCode: {
412: function(jqXHR, textStatus, errorThrown) {
alert(textStatus);
}
}
});
}
</script>
</head>
<body onload="initialize()">

</body>
</html>

Simple CouchDB actions with Ajax

With rozky's most useful answer on how to make an Ajax script communicate with your CouchDB server,

configure Apache (apache_home/conf/httpd.conf)
- uncomment LoadModule proxy_module modules/mod_proxy.so
- uncomment LoadModule proxy_http_module modules/mod_proxy_http.so
- add ProxyPass /couchdb http://127.0.0.1:5984 (as top level property like ServerAdmin)
- restart Apache
modify index.html
- replace http.open('GET', 'http://127.0.0.1:5984/_all_dbs', true); with http.open('GET', '/couchdb/_all_dbs', true);

I can execute some simple database commands as described in the Definitive Guide, replacing curl with some JavaScript code:

<html>
<head>
<script type="text/javascript">
function initialize() {
request=new XMLHttpRequest();
request.open('GET','http://127.0.0.1/couchdb/_all_dbs',true);
request.send(null);
request.onreadystatechange = function() {
if (request.readyState == 4) {
if (request.status == 200) {
alert(request.responseText);
}
}
};
}
</script>
</head>
<body onload="initialize()">
</body>
</html>

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Tuesday, March 13, 2012

Ajax jQuery style

Simple CouchDB actions with Ajax