Either that, or I’ve been mistaken all these years that Earth, Wind and Fire is not a solo artist.
Category Archives: Computers & Technology
CakePHP paginator sorting problem solved!
I’ll keep this brief, because I need to get back to writing code, but I wanted to share the solution I found to a CakePHP problem that has been nagging me for a while and for which I had never found a simple resolution.
I’m using the $paginator->sort() method to create links in the column headers for tables of paginated search results in my CMS. The method works great, except for one small problem: I could never get it to reverse the order. Intuitively, with links like these, you should be able to click them once to sort in ascending order, and then click again to reverse into descending order. But the reverse was never working for me.
Some research showed that you can pass in all sorts of options to the method, but I wanted to avoid having to make a change like that to about a dozen views; plus, it just didn’t seem right — the method is supposed to do the reverse by default.
At last I have discovered the source of my trouble: you need to explicitly name the model in the parameter that defines the sort field. I’ve been getting more diligent about always naming my models explicitly, but back when I set up these paginated tables (which was about the first thing I did in writing the application), I wasn’t doing it yet. Adding in the model, the reverse order on a second click works perfectly. Here’s a before-and-after example to illustrate the problem and its resolution.
Before:
<?php echo $paginator->sort('Title', 'title'); ?>
After:
<?php echo $paginator->sort('Title', 'Article.title'); ?>
“Fake Steve Jobs” on the true cost of Chinese manufacturing
I often complain about how just about everything is made in China these days. It’s about the exploitation of workers for the sake of cheaper goods. Well, in case you didn’t hear about it, a worker at the Chinese factory that makes iPhones committed suicide recently because he lost a prototype fourth-generation iPhone. And why did he commit suicide over this? Because he was apparently being tortured by his employers (Foxconn) over it. Presumably because this is the kind of mistake that might cost Foxconn their lucrative contract with Apple.
What was that factory worker’s life worth? Less than Foxconn’s iPhone manufacturing contract? Less than Apple’s potentially stolen trade secrets?
“Fake Steve Jobs” has posted a blog entry on the matter. If you’ve never read his blog before, the tone may be a bit shocking to you, but cut through the parody and there are a couple of paragraphs here that are probably the best critique ever of our reliance on cheap Chinese labor to manufacture the high-tech, low-cost devices we consume so voraciously:
Well, this is the world we are living in. These are the people we are dealing with. This is how we have to deal with them. We can’t make these products in the United States. Nobody could afford to buy them if we did. And, frankly, the quality would be about half what we get out of China. But these guys play rough. They really do. They are not nice people. And, though we talk a good game about how we insist on workers being treated with dignity, blah blah blah, well, I mean, come on. Have you ever been to China? We have. We’ve been to China. We know what goes on there. We know how they open your mail, and listen to your phone calls, and let their factories pollute like crazy and exploit workers, all in the name of progress. And we turn a blind eye to it. We let them know when we’re coming to visit, and they give us a tour and put on a little show of how great things are, and how wonderful the dorm life is, and afterward we pretend to keep an eye on them — but it’s all theater. It is. We know it. What’s more, you know it. Everyone knows it.
We all know that there’s no fucking way in the world we should have microwave ovens and refrigerators and TV sets and everything else at the prices we’re paying for them. There’s no way we get all this stuff and everything is done fair and square and everyone gets treated right. No way. And don’t be confused — what we’re talking about here is our way of life. Our standard of living. You want to “fix things in China,” well, it’s gonna cost you. Because everything you own, it’s all done on the backs of millions of poor people whose lives are so awful you can’t even begin to imagine them, people who will do anything to get a life that is a tiny bit better than the shitty one they were born into, people who get exploited and treated like shit and, in the worst of all cases, pay with their lives.
I’ve read plenty about the conditions in Chinese factories, enough to make me want to never buy anything that says “Made in China” on the label. But, honestly, that’s getting nearly impossible these days. It’s not just about being too cheap to buy the more expensive version of the product made somewhere else with better labor laws; it’s that in many cases there is no other option that wasn’t also made in China.
Apple products present the biggest dilemma for me personally. I’ve been a Mac-o-phile for over 15 years. I’ve staked my livelihood around work that depends integrally on things Apple makes, and they’re all made in China. And Apple’s not alone — as far as I know, all of the major computer companies contract out their manufacturing to Chinese firms. I suppose I could build my own PCs and switch to Linux, but even then, it would be hard to find all of the necessary components that go into a computer, with a “nothing-made-in-China” restriction.
So, for me, in many cases, boycotting Chinese-made goods is simply impossible. But I do what I can. If there’s another option, I’ll take it. I’m willing to pay more if I have to. And even though I’m writing this on an Apple computer that was manufactured in one of these same Chinese factories, perhaps speaking out on the matter is some small penance for my complicity in what’s going on.
There’s more on the story from Gizmodo and, as usual, I learned about it all from Daring Fireball.
Ow, my brain!
I write code for a living. But we web developers have it easy. Server-side scripting languages like PHP may look alien at first, but they’re pretty easy to pick up and intuitive enough that you can really get going pretty fast, and once you’re familiar with the basic principles, it’s not hard to look at a block of code and figure out what it does.
But programming in the old days was a much finer and darker art. System resources were scarce, and everything had to be as efficient as possible — on the computer hardware, at least. A lot more of the “processing” had to happen inside the brains of the programmers before any of the code was even written. Looking at this kind of old code fries my brain.
The most notorious example of old-school assembler code I’ve encountered is the language used to program the Atari 2600. That’s something I’ve never been willing to touch, myself. And it’s for something trivial — video games. But here’s something that really freaks me out: the original source code from Apollo 11. This code is every bit as inscrutable — or more — and it was mission critical: the lives of three astronauts, over 200,000 miles from Earth depended on it working flawlessly.
Well, they made it back, so I guess it worked. But looking at the code, I have no idea how. Here’s an excerpt:
GUILDEN EXTEND # IS UN-AUTO-THROTTLE DISCRETE PRESENT? # STERN # RSB 2009: Not originally a comment. READ CHAN30 MASK BIT5 CCS A TCF STARTP67 # YES P67NOW? TC CHECKMM # NO: ARE WE IN P67 NOW? DEC 67 TCF STABL? # NO STARTP66 TC FASTCHNG # YES TC NEWMODEX DEC66 DEC 66 EXTEND DCA HDOTDISP # SET DESIRED ALTITUDE RATE = CURRENT DXCH VDGVERT # ALTITUDE RATE. STRTP66A TC INTPRET SLOAD PUSH PBIASZ SLOAD PUSH PBIASY SLOAD VDEF PBIASX VXSC SET BIASFACT RODFLAG STOVL VBIAS TEMX VCOMP STOVL OLDPIPAX ZEROVECS STODL DELVROD RODSCALE STODL RODSCAL1 PIPTIME STORE LASTTPIP EXIT CAF ZERO TS FCOLD TS FWEIGHT TS FWEIGHT +1 VRTSTART TS WCHVERT
Source: Daring Fireball (of course).
On upgrading WordPress (and WordPress plugins) automatically over SSH/SFTP
For the most part, I love managing my own server. Even though it requires digging into the muck of Linux configuration files with my bare hands (so to speak), and if it goes down, I have no one to blame (or call on for help) but myself, it’s great to have full control and flexibility.
One downside I discovered as a WordPress user, however, is that the super-slick automatic upgrade feature of WordPress was broken on my server. WordPress only supports FTP and the (as I see it) somewhat pointless FTPS. Insecure as it is, my old host supported regular ol’ FTP, and that made WordPress upgrades painless.
There’s no way I’m going to implement FTP on my own server. It’s easy enough to install the package at the command line (really, it is), but I just see no reason to open myself up to the security risks. Granted, there aren’t really that many security risks (beyond one very big one — intercepted passwords) with a well-configured FTP server. But I don’t care to investigate the steps necessary to ensure an FTP server is well-configured.
The obvious choice is to use SFTP/SSH, but at first it looked to me as if WordPress simply didn’t support it. But as I’ve learned (and since proven with my own server), WordPress does support it if your PHP installation has the proper extensions installed. And here’s a guide to get you started.
Once your PHP install is upgraded to support SSH connections, the option will automatically become available in the WordPress upgrade tools, and it works perfectly!