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Rails - Validate Presence Of Association?
...
You can use validates_presence_of http://apidock.com/rails/ActiveModel/Validations/ClassMethods/validates_presence_of
class A < ActiveRecord::Base
has_many :bs
validates_presence_of :bs
end
or just validates
http://apidock.com/rails/ActiveModel/Vali...
ASP MVC href to a controller/view
...;
<span>Clients</span>
</a>
The result would have http://localhost/10000 (or with whatever port you are using) to be appended to the URL structure like:
http://localhost:10000/Users
I hope this helps.
...
java.lang.OutOfMemoryError: bitmap size exceeds VM budget - Android
...ooking at your code. However, this article has some tips that might help:
http://android-developers.blogspot.de/2009/01/avoiding-memory-leaks.html
In particular, using static variables is likely to make things worse, not better. You might need to add code that removes callbacks when your applicati...
Check for internet connection availability in Swift
...work()->Bool{
var Status:Bool = false
let url = NSURL(string: "http://google.com/")
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "HEAD"
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData
request.timeoutInterval = 10.0
...
How to change href of tag on button click through javascript
...ef(){
document.getElementById("a").setAttribute("onclick", "location.href='http://religiasatanista.ro'");
}
</script>
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Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause?
... see Automatic
Initialization and Updating for TIMESTAMP and DATETIME.
http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-5.html
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MySQL remove all whitespaces from the entire column
...racters :
UPDATE `table` SET `col_name` = REPLACE(`col_name`, '\n', '')
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace
To remove first and last space(s) of column :
UPDATE `table` SET `col_name` = TRIM(`col_name`)
http://dev.mysql.com/doc/refman/5.0/en/string-fu...
CSS Font Border?
...
UPDATE
Here's a SCSS mixin to generate the stroke: http://codepen.io/pixelass/pen/gbGZYL
/// Stroke font-character
/// @param {Integer} $stroke - Stroke width
/// @param {Color} $color - Stroke color
/// @return {List} - text-shadow list
@function stroke($str...
How to set an iframe src attribute from a variable in AngularJS
...$sceProvider) {
$sceProvider.enabled(false);
});
for more info
https://docs.angularjs.org/api/ng/service/$sce
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Inefficient jQuery usage warnings in PHPStorm IDE
...elector rather than selection on id and then find for a very simple case:
http://jsperf.com/jquery-find-vs-insel
For selection of multiple children by class at any depth, the "find" does appear to be faster:
http://jsperf.com/jquery-find-vs-insel/7
There was some discussion about this on jQuery ...