Data not pushed to global variable

[luislupe]

Hi,

I'm trying to .push several urls to a global variable inside a function of a javascript and casperjs script. The global variable does not seem to be filled with the data.

var page_links = ['http://www.olx.pt'];
var product_links = [];

casper.start();

function spider(url) {
        casper.open(url).then(function() {
        var pager = this.evaluate(getMorePages);

        // get the product_links of the webpage
        var temp_links = this.evaluate(getLinks);
        for (j = 0; j < temp_links.length; ++j) {
            product_links.push(temp_links[j]);
            this.echo("temp_link: " + temp_links[j]);
            this.echo("product pushed: " + product_links[product_links.length - 1]);
        }   

        for (var i = 0; i < pager.length; ++i) {
            var new_url = pager[i];
            if (! existsInArray(new_url, page_links)) {
                page_links.push(new_url);
                this.echo("page link pushed: " + new_url);

                spider(new_url);
            }
        }
    });

    casper.then(function() {
        casper.echo("pl0: ", product_links.join('\n .. '));
        casper.echo("pl0.length: ", product_links.length);
    });
}





casper.then(function() {
    spider(page_links[0]);
});

So, I'm trying to push product urls to the product_links global variable and it seems to be working, as far as the two echo statements show:

this.echo("temp_link: " + temp_links[j]);
this.echo("product pushed: " + product_links[product_links.length - 1]);

But, in another step, when I try to access product_links, in the next casper.next step, product_links seems to be empty.

How to correct this?