Not well formed XML in Google MAP geocoding result   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). ...

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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, ...

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

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

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Imagine, you have created a great module/class for rails interacting with 3rd party service provider over TCP/IP or you build a ruby extension to one of the libraries, where work with IO is done outside of the ruby itself. While you was building it you didn't pay a lot of attention to handling timeouts, network latency, IO blocks or you name it.

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auto_scope plugin for rails has_many with_scope   more »

if you do rename_column/add/remove in your migration, don't forget to call reset_column_information in the changed class. Otherwise you may have a problem with running migration on an empty DB if you pre-seed data in the migration after change ...   more »