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How do you delete an ActiveRecord object?
... 'value') will allow you to delete records
without a primary key
Note: from @hammady's comment, user.destroy won't work if User model has no primary key.
Note 2: From @pavel-chuchuva's comment, destroy_all with conditions and delete_all with conditions has been deprecated in Rails 5.1 - see gui...
What does the Subversion status symbol “~” mean?
...w without a .svn file. Any idea on how to fix that? Do I need to delete it from subversion and add it again?
– jergason
May 12 '09 at 15:47
...
Sending a JSON to server and retrieving a JSON in return, without JQuery
...g PHP
//
header("Content-Type: application/json");
// build a PHP variable from JSON sent using POST method
$v = json_decode(stripslashes(file_get_contents("php://input")));
// build a PHP variable from JSON sent using GET method
$v = json_decode(stripslashes($_GET["data"]));
// encode the PHP varia...
How to make a Java Generic method static?
...h other.
So, what does this mean:
In my answer <E> would hide the E from ArrayUtils<E> if the method wouldn't be static. AND <E> has nothing to do with the E from ArrayUtils<E>.
To reflect this fact better, a more correct answer would be:
public static <I> I[] append...
How to convert a dictionary to query string in Python?
...
In python3, slightly different:
from urllib.parse import urlencode
urlencode({'pram1': 'foo', 'param2': 'bar'})
output: 'pram1=foo&param2=bar'
for python2 and python3 compatibility, try this:
try:
#python2
from urllib import urlencode
except...
Difference between path.normalize and path.resolve in Node.js
...ove would've been ../node, because that's the shortest path one could take from /Users/mtilley/src/testing to /Users/mtilley/src/node.
Ironically, this means that path.resolve() produces a relative path in absolute terms (you could execute it anywhere, and it would produce the same result), whereas...
Disable Rails SQL logging in console
...ion I consider somewhat cleaner, that still allows potential other logging from AR. In config/environments/development.rb :
config.after_initialize do
ActiveRecord::Base.logger = Rails.logger.clone
ActiveRecord::Base.logger.level = Logger::INFO
end
...
What's the use of ob_start() in php?
...o I can break out of PHP with a lot of HTML but not render it. It saves me from storing it as a string which disables IDE color-coding.
<?php
ob_start();
?>
<div>
<span>text</span>
<a href="#">link</a>
</div>
<?php
$content = ob_get_clean();
?>...
What is the best way to remove accents (normalize) in a Python unicode string?
...
@lenz, I wasn't talking about removing accents from Greek, but about the "stroke" on the ell. Since it is not a diacritic, changing it to plain ell is the same as changing Greek Alpha to A. If don't want it don't do it, but in both cases you're substituting a Latin (near)...
An error occurred while installing pg (0.17.1), and Bundler cannot continue
...alled under mac OSX Mavericks, having the postgres app (Version 9.2.2.0 ) from www.postgresapp.com installed. The underlying problem was simpy that the since postgres was installed via the app, the configuration file resides on a location which is not the default one when installing it without post...