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Rails: How can I set default values in ActiveRecord?
...please use Base.after_initialize :method instead. (called from /Users/me/myapp/app/models/my_model:15)
Therefore I'd say write an after_initialize callback, which lets you default attributes in addition to letting you set defaults on associations like so:
class Person < ActiveRecord::Base
...
Completion handler for UINavigationController “pushViewController:animated”?
I'm about creating an app using a UINavigationController to present the next view controllers.
With iOS5 there´s a new method to presenting UIViewControllers :
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How do I connect to a specific Wi-Fi network in Android programmatically?
I want to design an app which shows a list of Wi-Fi networks available and connect to whichever network is selected by the user.
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Send POST data using XMLHttpRequest
... information along with the request
http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
http.onreadystatechange = function() {//Call a function when the state changes.
if(http.readyState == 4 && http.status == 200) {
alert(http.responseText);
}
}
http...
What is the advantage of using async with MVC5?
...NET requests to a CDN. A simple CDN is merely using subdomain and separate app pool for physical files like your javascript and images. Alternatively you could use NgineX / Lighttpd / Apache for files, or you could use a third party service such as Akamai (king for CDN but most expensive)
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Executing JavaScript without a browser?
...A is interesting because it lets you (AFAIK) interact with scriptable OS X apps as though you were in AppleScript (without the terrible syntax)
I'm surprised node.js doesn't come with a shell, but I guess it's really more like an epoll/selector-based callback/event-oriented webserver, so perhaps i...
img tag displays wrong orientation
...ot to add my own answer here. I was using Ruby on Rails so it might not be applicable to your projects in PHP or other frameworks. In my case, I was using Carrierwave gem for uploading the images. My solution was to add the following code to the uploader class to fix the EXIF problem before saving t...
Rails ActionMailer - format sender and recipient name/email address
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address.display_name appears to mutate the string encoding in some cases, so if you plan on using name later on, e.g. in rails mailer views, do address.display_name = name.dup
– Eero
Nov 1 '13 at 11:52
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What's the state of the art in email validation for Rails?
...ation is also low. Validate generously, and worry about errors when they happen.
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How to import existing *.sql files in PostgreSQL 8.4?
...r f in *.sql ; do psql -f $f ; done
Here's the documentation of the psql application (thanks, Frank): http://www.postgresql.org/docs/current/static/app-psql.html
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