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Converting an array of objects to ActiveRecord::Relation
...l as sorting them with a specific column(id for instance). Since I'm using MySQL, the field function could be helpful.
MyModel.where('id in (?)',ids).order("field(id,#{ids.join(",")})")
The SQL looks like:
SELECT ... FROM ... WHERE (id in (11,5,6,7,8,9,10))
ORDER BY field(id,11,5,6,7,8,9,10)
...
Maven2 property that indicates the parent directory
...the whole project or a sub-module.
It works whether you run maven from the root folder or a sub-module.
There's no need to set a relative path property in each and every sub-module!
The plugin lets you set a property of your choice to the absolute-path of any of the project's modules. In my case I...
First-time database design: am I overengineering? [closed]
...noting that if you're generating CSVs already and want to load them into a mySQL database, LOAD DATA LOCAL INFILE is your best friend: http://dev.mysql.com/doc/refman/5.1/en/load-data.html . Mysqlimport is also worth looking into, and is a command-line tool that's basically a nice wrapper around loa...
How to read all files in a folder from Java?
...The method Files.walk(path) will return all files by walking the file tree rooted at the given started file.
For instance, there is the next file tree:
\---folder
| file1.txt
| file2.txt
|
\---subfolder
file3.txt
file4.txt
Using the java.nio.file.Files...
Path of assets in CSS files in Symfony 2
...source: .
# type: assetic
Specify the URL as absolute from the web root. For example, background-image: url("/bundles/core/dynatree/skins/skin/vline.gif"); Note: our vhost web root is pointing on web/.
No usage of cssrewrite filter
...
Where can I find the error logs of nginx, using FastCGI and Django?
...
Errors are stored in the nginx log file. You can specify it in the root of the nginx configuration file:
error_log /var/log/nginx/nginx_error.log warn;
On Mac OS X with Homebrew, the log file was found by default at the following location:
/usr/local/var/log/nginx
...
Using Sass Variables with CSS3 Media Queries
...pport for older browsers too).
$mq-laptop: 1440px;
$mq-desktop: 1680px;
:root {
--font-size-regular: 14px;
--gutter: 1rem;
}
// The fact that we have to use a `max-width` media query here, so as to not
// overlap with the next media query, is a quirk of postcss-css-variables
@media (min-w...
What is Virtual DOM?
...des in the Virtual DOM.
ReactElements can be rendered into HTML DOM
var root = React.createElement('div');
ReactDOM.render(root, document.getElementById('example'));
JSX compiles HTML tags into ReactElements
var root = <div/>;
ReactDOM.render(root, document.getElementById('example'));
R...
ViewPager PagerAdapter not updating the View
...ide
public Object instantiateItem(View container, int position) {
View root = <build your view here>;
((ViewPager) container).addView(root);
views.put(position, root);
return root;
}
@Override
public void destroyItem(View collection, int position, Object o) {
View view = (...
Looking to understand the iOS UIViewController lifecycle
...override this method when you programmatically create views and assign the root view to the view property
Don't call super method when you override
loadView
2. loadViewIfNeeded
If incase the view of current viewController has not been set yet then this method will load the view but remember, ...