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Rails 3 check if attribute changed
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Check out ActiveModel::Dirty (available on all models by default). The documentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
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How do I reword the very first git commit message?
... As of git 1.7.12, git rebase -i --root is the way to go, as suggested by florisla.
– Douglas
Jan 16 '14 at 21:21
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How can I suppress column header output for a single SQL statement?
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How do I get current URL in Selenium Webdriver 2 Python?
...navigations in Selenium. I know there's a command called getLocation for ruby, but I can't find the syntax for Python.
4 An...
What's the difference between django OneToOneField and ForeignKey?
...article they will se only one author in the article.
For example: Article by John, Article by Harry, Article by Rick. You can not have Article by Harry & Rick because the boss does not want two or more authors to work on the same article.
How can we solve this 'problem' with the help of django...
convert_tz returns null
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Apart from Windows environment, You can set Time Zone by
mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql
In Windows environment,
1. download Time zone description tables from http://dev.mysql.com/downloads/timezones.html
2. Stop MySQL server
3. Put then in...
Accessing JPEG EXIF rotation data in JavaScript on the client side
I'd like to rotate photos based on their original rotation, as set by the camera in JPEG EXIF image data. The trick is that all this should happen in the browser, using JavaScript and <canvas> .
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TypeScript type signatures for functions with variable argument counts
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Iterating a JavaScript object's properties using jQuery
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Late, but can be done by using Object.keys like,
var a={key1:'value1',key2:'value2',key3:'value3',key4:'value4'},
ulkeys=document.getElementById('object-keys'),str='';
var keys = Object.keys(a);
for(i=0,l=keys.length;i<l;i++){
str...
How to forward declare a C++ template class?
...answered Dec 12 '12 at 20:57
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