Category Archives: web development

Opencart 1.5.5 – Product Filters

Opencart have implemented product filters as of 1.5.5. In my opinion, category level product filters are a much needed feature and something Opencart has been lacking for a while. However, in true Opencart style, to date their documentation/announcement is completely lacking, simply citing “Product Filters” as a new feature – even their demo store still uses Opencart 1.5.4, meaning you won’t even be able to see the amazing new Opencart product filters in action!

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Counter Cache

Counter Cache (or Counter Cache Columns) is the term coined when adding a column to data tables in order to keeps track of aggregate data in an application. The term “cache” is used because the application has no need to perform costly count queries. It can simply read the value of the “count column”. This practice is less costly when compared to performing separate database queries. The worst case scenario, where the application has database queries within a loop is avoided too.

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Website Transfer Guide – Common Pitfalls & Solutions

A Different take on the normal “Website Transfer Guide” …

Taking over, or inheriting responsibility for an existing website happens to any web designer or developer at some point. In theory, website transfers sound extremely minor and insignificant – take a backup of the site, re host and away you go. As a result, if you Google something generic like “transfer web site” you’ll get lots of guides that are technically correct but rarely work in theory, as external factors have a big part to play. For instance, look at the website transfer guide of 123-reg.It appears transferring a site is a case of following a couple of basic points. It really isn’t! In reality, taking responsibility for a website is an absolute minefield and deceptively complex. A website transfer guide should reflect these complexities. What follows are some points to consider, from the view of a web developer when doing just that.

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Opencart Theme Development – My Opinion

Opencart theme development, in it’s current state is flawed in my opinion. Opencart is a great platform for any type of ecommerce store, having a plethora of features for users and a low entry point for developers. As a result, Opencart has plenty of themes available for download, just take a look on Themeforest. Occassionally, to test out various things out I’ll install such themes locally. More often than not the theme will break the store completely, or render parts of the site completely broken.

9 times out of 10 the issue will be down to the theme developer not sticking to basic Opencart theming guides – they’re very basic to say the least. The main point to note is that Opencart, like other ecommerce platforms, uses a fallback technique on the “default” theme. So, for example, if Opencart doesn’t find a template for a category listing page, it will fallback to the template from the default theme. If the latter is not adhered to, and it isn’t – look at some of the so called “premium” themes out there, it makes upgrading very, very painful. There are theme developers out there that are copying over a files for the sake of it, when no changes are made. If your theme literally only has changed the color/layout of the footer, apart from the default stylesheet folder, image folder and header template you only need the footer.tpl in your theme folder.

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Validate Data within A Model using CodeIgniter and MY_Model

CodeIgniter’s validation library is amazing out of the box and will save any developer an absolute ton of time. However, as CodeIgniter is an MVC framework it’s validation library does encourage data validation directly in controllers – which of course for the “MVC Nazis” out there is against strict MVC principals. So, data validation should strictly happen at the model layer, not in the controller. Moving data validation to the model has a few benefits¬† – it allows your application to follow to coveted “Fat Model, Skinny Controller” pattern and allows you to validate other data types (not just posted data). Again, you can technically keep things neat by saving your validation rules to a config file and keeping validation in the controller, but that still breaks the MVC principals.

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Why Codeigniter Base Models Rock

codeigniter base crud modelsThere are a plethora of reasons to use a good base model (also called CRUD Model, MY-Model) for all your CRUD operations in a CodeIgniter (or any) application. Amongst many, a base model will boostrap all models it extends, keep your application as “DRY” as possible and speed up general development. Codeigniter has a pretty neat active record implementation, but you do tend to repeat a lot of the boring database stuff when writing models. In my opinion, you’d be insane not to use a good base model. There are many out there, but I use the amazing base model from Jamie Rumblelow (it deserves and SEO Link before you ask!).

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Yell Websites and Template Recycling – A Review

yell web design reviewIt’s been fairly common news for a while now that the age old Yell.com offer web design services, or “Yellsites” as some have coined it. There’s been a lot written about this fact, with some people citing lots of reasons why Yell websites are evil. There also a fairly in depth post that goes on to actually explain why the author dislikes yell.com websites over here. Additionally, there is also a big pool of annoyed people over at the infamous reviewcentre.

Personally, I think their sites will never set the world on fire, but at the end of the day Yell are tapping into a certain and very specific niche where the majority of their clients are very small businesses. It’s truly a case of you get what you pay for (even if a Yell.com website will cost you more overtime, which is what I assume is key Yell’s business model). For me, it’s great really, as seem to have lots of clients who currently have a Yell site, realise their site isn’t performing for them and want to move on – in I (or any other web person) step. Yell are clearly going down the bulk route with their sites being mass produced and based upon templates – at the end of the day they aren’t charging bespoke prices (in the short term anyway). I say fair play to them if they want to go down that route. This post isn’t in any way intended to knock Yell.com websites in the least. Although I’m not a fan of their apparent sales patter I keep hearing about where Yellsites say they have a special partnership with Google” or the “Did you know Yell.com is the most searched UK website” – for the record, both of those statements are frankly lies and total rubbish.

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Epic Fix for IE6 Browser Issues

I’ve come across an endless list of IE6 hacks and apparent fixes for the one browser that still causes many issues. This on is my favourite:

<!--[if IE 6]>
<meta http-equiv="refresh" content="0; url=http://www.microsoft.com/windows/internet-explorer/default.aspx" />
<script type="text/javascript">
/* <![CDATA[ */ window.top.location = 'http://www.microsoft.com/windows/internet-explorer/default.aspx'; /* ]]> */
</script>
<![endif]-->

Drastic, yet very epic and takes seconds to implement. Solves all your IE6 problems :)

Object Oriented CSS (OOCSS) – My View

After reading an article about OOCSS (Object Oriented CSS) I was left a little numb and confused to be honest. I’d advise you read the full article before reading what follows.

The idea is fairly simple – write your CSS using a “bottom up” approach, as opposed to a “top down” approach, treating your elements as “objects”, using mainly classes, as opposed to IDs. The idea of this is to make classes more reusable and to encourage a greater css granularity architecture. The overall theory behind OOCSS is something I don’t dispute in the least, if anything it’s simply good practice when writing a CSS file.

For me, the whole article borders on the pedantic to the outright pretentious.

Firstly, I’m not a fan of the name. “OOCSS” implies a link to OOP (Object Orientated Programming), which it is not. I can see why they’ve named it OOCSS as I guess multiple classes could be similar to inheritance, an element on your page as an “object”, classes imply reusability etc. As a web developer, who uses OOP I was instantly put on the defensive, thinking “OOP for CSS, wtf”. I understand the name is simply a paradigm, but it sends out all the wrong signals for me personally.

Apologies if this article turns into a bit of a rant…..

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Magento as an ECommerce Platform – A Case Study

To date this year, I have inherited several Magento stores to perform web updates on. I thought I’d write a small post on my experience and thoughts in using the system and how that system translates to real world, non technical clients.

As a bit of background, I’m by no means a fully fledged Magento developer in the least. After a few hours of experimenting I managed to get a template based upon my design, up and running.

It’s common knowledge that Magento is touted as the best thing since sliced bread – you constantly see companies selling the (what I call), “Magento experience”. Sales based pitches such as “you’ll never need to upgrade again”, “Magento can do everything out of the box” and “Magento will infinitely scale with your business” are very common from web companies. The latter does not apply to all businesses in my experience. To illustrate, I’ll use the example of a client who came to me in despair at their current web company and Magento based website – I won’t be using any real names.
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