SentientCreations » PHP

count_all_results() and get_where() in CodeIgniter

admin — Tue, 29 Nov 2011 19:01:50 +0000

This silly little mistake tripped me up for a bit this morning and I only figured it out after some searching. Based on the results I’m not the only person that has hit this roadblock, so here is the solution.

I was doing a normal query that looked something like this:

$read_db = $this->load->database('read', TRUE);
$query = $read_db->get_where(array('username' => $username, 'password' => $password));

Due to some changes in how my application works, I needed to change that from a query that returned a result to a query that just returned the number of items in the query.

So I changed the code above to be:

$read_db = $this->load->database('read', TRUE);
$read_db->get_where(array('username' => $username, 'password' => $password));
$count = $read_db->count_all_results();

This code would just return a 1 regardless of what the parameters in the where clause were. After a bit of searching I ran across this forum post that told me what the issue was. You should only use get_where() if you actually want to return a result. The correct syntax for this query is:

$read_db = $this->load->database('read', TRUE);
$read_db->where(array('username' => $username, 'password' => $password));
$read_db->from('admin');
$count = $read_db->count_all_results();

This now returns the correct result every time. Silly mistake caused by my misreading the documentation, but it still took a bit to figure it out.

Today I Made…

admin — Tue, 22 Nov 2011 03:19:24 +0000

Today I started a new personal project that I’m hoping is going to be a lot of fun. Right now I’m calling it “Today I Made”, although I’m not sure that will be final name until I can secure some sort of domain name I like.

The idea of the site is that you will be able to login and post something that you “made”. Made is in quotes because I want to be quite inclusive. For instance, one day I made that image you see up there. Today, I made some nifty CodeIgniter code that lets you upload a file and then drops the content into a database. Maybe tomorrow I’ll make a pie, or paint a picture or build a shelf, who knows? Essentially, I just want people to be able to showcase the things that they actually create by uploading a picture or linking to their blog or just telling everyone about it.

Eventually I hope to add Facebook and Twitter integration, up-voting, badges and all that other Web 2.0 type stuff that every site just needs. But I’ll start simple and build it up as I go and see what people like. I’m hoping that it will give me the chance to build something fun and at the same time get to use some technology that I don’t get to play with all the time at my day job.

Want to follow along as I get going? You can follow along on github here: https://github.com/cliffjohnson/todayimade. I need to get an open source license applied to this project, I think there might be a couple of different applications for it once it’s done, but that is another post.

Add A New Products Section to a Magento Store Homepage

admin — Sat, 19 Dec 2009 16:08:04 +0000

Was looking for a way to add a New Products section to the homepage of a Magento store I’m working on a found a great write up on Richard Castera’s blog. All you really have to do is add this code to the homepage code in your CMS section:

{{block type="catalog/product_new" name="home.catalog.product.new" alias="product_homepage"template="catalog/product/new.phtml"}}

Check out the full blog post with some great back and forth and troubleshooting tips.

Once you have the new products displaying, this post on the Magento site will show you how to have more than five products displayed and how to add more than one row.

Could It Really Be That Easy?

admin — Tue, 01 Dec 2009 22:37:06 +0000

In a project we are working on we needed a way to extract the number portion of a weight from a string. So we could receive any of the following:

21
21 lbs
21.3
21.3 lbs

We started looking into some regular expressions to do the job, but then ran across a page saying that you can just cast it to a float or int and it will drop the string bit automatically like so:

$string = “22.8 lbs”;

echo (float)$string;

$string = “22.8 lbs”;
echo (float)$string;
?>

This should output 22.8. Not perfect for every situation, but pretty handy in the right one.