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Ruby on Rails: Where to define global constants?
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If your model is really "responsible" for the constants you should stick them there. You can create class methods to access them without creating a new object instance:
class Card < ActiveRecord::Base
def self.colours
['white', 'blue'...
How do I get user IP address in django?
...re you have reverse proxy (if any) configured correctly (e.g. mod_rpaf installed for Apache).
Note: the above uses the first item in X-Forwarded-For, but you might want to use the last item (e.g., in the case of Heroku: Get client's real IP address on Heroku)
And then just pass the request as argu...
Using success/error/finally/catch with Promises in AngularJS
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Promises are an abstraction over statements that allow us to express ourselves synchronously with asynchronous code. They represent a execution of a one time task.
They also provide exception handling, just like normal code, you can return from a promise or you can throw.
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How does a PreparedStatement avoid or prevent SQL injection?
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Sure, but you can still hardcode some or all of your parameters.
– tangens
Oct 17 '09 at 17:56
16
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How does one escape backslashes and forward slashes in VIM find/search?
...erent delimiter instead:
:%s@<doc/>@<cat\\>@
This saves you all typing all those time-consuming, confusing backslashes in patterns with a ton of slashes.
From the documentation:
Instead of the / which surrounds the pattern and replacement string, you
can use any other single-b...
.keyCode vs. .which
...tE: If not using jQuery, you have to handle this explicitly yourself. I usually do it like this var key = event.which || event.keyCode; That will use event.which if it's defined and not falsey, or event.keyCode if which is undefined or falsey. Technically I should probably do var key = typeof event....
What is the difference between a directory and a folder?
...hs, which can vary between versions of Windows, and between individual installations. ...
If one is referring to a container of documents, the term folder is more appropriate. The term directory refers to the way a structured list of document files and folders is stored on the computer. The distinct...
How do I check out a remote Git branch?
Somebody pushed a branch called test with git push origin test to a shared repository. I can see the branch with git branch -r .
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Change size of axes title and labels in ggplot2
I have a really simple question, which I am struggling to find the answer to. I hoped someone here might be able to help me.
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How can I expand and collapse a using javascript?
... wanna do this by yourself, you could remove the fieldset (its not semantically right to use it for this anyway) and create a structure by yourself.
Here's how you do that. Create a HTML structure like this :
<div class="container">
<div class="header"><span>Expand</span&...