Be aware of the bug in Rails ActiveSupport String.to_time method

(rdb:1) "2009-09-10 24:00:00".to_time - "2009-09-10 00:00:00".to_time
TypeError Exception: expected numeric or date
(rdb:1) "2009-09-10 24:00:00".to_time.to_time - "2009-09-10 00:00:00".to_time
86400.0
(rdb:1) p "2009-09-10 24:00:00".to_time.class
DateTime
(rdb:1) p "2009-09-10 00:00:00".to_time.class
Time
(rdb:1) 

   more »

Using Proc as a response you pass from the controller sometimes causes 500 error. It happens to be the nature of the Rack/Rails life cycle. Before response was sent/called before Dependencies cleanup in Rails, because it was part of the flow on request-response processing. Now with Rack in front of Rails, the Proc is not called in the request-response flow of the Rails, but in the Rack after Rails finished and if you happens to use Model classes inside the Proc, then you may get empty or partial response and some errors in Apache error logs

   more »

With recent update to Rails 2.3 we found that we cant' strem CSV with FasterCSV anymore

   more »

With a recent upgrade to passenger to 2.0.6 ESPIPE come back again. Another patch ...

   more »

it has a bug or feature in it. yeilding inside with_scope will put scope on the same class

migration

class ...

   more »

Once upon a time a man appeared in a village and announced to the villagers that he would buy monkeys for $10 each. ...   more »

Few days ago we upgraded our test server with mysql 5.1.30 (before we had 5.0.27) and tests started to fail. ...   more »

In our application we have the problem with high CPU load and hang process when upload of the file failed ...   more »

Today I have discovered a big oops I'd made when called column 'display' in our model. It turns out default ...   more »

rdebug with Phusion Passenger   more »

Today we had an interesting experience. During the the deployment one of the server start showing a lot of errors ...   more »

Tile watermarking of an image with RMagick   more »

Not well formed XML in Google MAP geocoding result   more »

Vpim::InvalidEncodingError: ... =OD=0A= when parsing vcf files in ruby ...   more »

Well, it is not leaks, it's just the way how Ruby and Rails works. The problem in templates , Proc, GC and scope. Read more ...   more »

Rails taking care for your to handle UTF-8. How about when you need to generate a CSV file? It can't be UTF-8. It has to be one of the localized encodings. There is no javascript way to know what is a default locale on the windows client. You may assume it based on your major audience location, (still wrong assumption). ...

   more »

Just demo

$ irb
irb(main):001:0> require 'yaml'
=> true
irb(main):002:0> YAML.load(YAML.dump("\n New Paragraph\nNew Line"))
ArgumentError: syntax error on line 3, ...

   more »

Gmail account of one of my friends got hijacked and pretty much the same minute all her contacts from contact ...   more »

Another 'work/sales' representative scam. Turkish company with email address on Spanish Yahoo. Apparently Finland, Cyprus and UK is not part ...   more »

I would never thought that russian OLIGARH'IE name will be used in the old-old scam

To: (Recipient List Suppressed)
Sender: ...   more »

REF:KIR/02.
Dear Sir/Madam,

We avail ourselves of this opportunity to approach you for the
establishment of business relations with you. We are presently
searching for Representatives/Collection Agents who can help us
establish a medium of getting to our customers in the America,
precisely USA and Canada. If interested, Please contact us via email;
for more information. ...

   more »

ActiveMerchant Paypal gateway doesn't like 'SuccessWithWarning' from Paypal. How to handle it and save your face (or your website face)   more »

The scammers and identity thefts becoming more sophisticated. That email came through google spam check and spamassassin I run locally.   more »

Stop big file upload before it hits your application server

• Apache 2
• ModRewrite
• Ruby on Rails

When you have a form to upload a file, you may want to limit the ...

   more »

Scam with elements of social engineering.
How scammers using craigslist  to fool you, mislead and deceive you ...   more »

Curl retry easy with alias_method_chain ...   more »

Some time you need a debugger with ability to  step-by-step execution,
inspection and evaluation, not just watch. I use small shell script to achieve this

#!/bin/sh
mongrel-cluster stop
sleep 5
cd $ROR_HOME
/usr/bin/xterm -e "rdebug -n -- ./script/server -p 4001" &
/usr/bin/xterm -e "rdebug -n -- ./script/server -p 4002" &
/usr/bin/xterm -e "rdebug -n -- ./script/server -p 4003" &

The server will stop execution right at the line debugger if defined? Debugger

I don't know how Safari identifies a content-type for the file before it uploaded (extension or magic bit). But when it failed to identify it - nothing is passed to server Example upload CSV file from Safari on Windows ...   more »

I need to parse uploaded vCard (vcf) file for one of the project, I am
working on. There is not that many libraries for Ruby around there.
Well, actually there is only one - vpim

Everything was working just fine with test files I found on the Internet,
until I hit the wall with vcf from Apple Address book. Few surprises:
accent characters or non US ASCII in general plus EMAIL and TEL
without a value ...

   more »

You need to render partial with a collection of hashes (or kind_of?). Probably you control the code, which generate the collection

...   more »