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Laravel Eloquent groupBy() AND also return count of each group
...et collection, groupBy and count:
$collection = ModelName::groupBy('group_id')
->selectRaw('count(*) as total, group_id')
->get();
Cheers!
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How to calculate a time difference in C++
...rono>
class Timer
{
public:
Timer() : beg_(clock_::now()) {}
void reset() { beg_ = clock_::now(); }
double elapsed() const {
return std::chrono::duration_cast<second_>
(clock_::now() - beg_).count(); }
private:
typedef std::chrono::high_resolution_cloc...
Rails: Open link in new tab (with 'link_to')
...open a new tab or a new site. But this depends on the user settings. I considere this question answered.
Except I fell in a trap when it is necessary to seperate the link options from the html options:
link_to(name = nil, options = nil, html_options = nil, &block)
Example:
link_to('Click me'...
How to make a round button?
...n round circle. It's not the same. Please, tell me, is it possible on Android? Thank you.
15 Answers
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Is it possible to group projects in Eclipse?
... having it added to Project Explorer is bugs.eclipse.org/bugs/show_bug.cgi?id=266030.
– studgeek
Sep 18 '12 at 0:07
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$(window).width() not the same as media query
...cumentation).
function checkPosition() {
if (window.matchMedia('(max-width: 767px)').matches) {
//...
} else {
//...
}
}
window.matchMedia is fully consistent with the CSS media queries and the browser support is quite good: http://caniuse.com/#feat=matchmedia
UPDATE:...
What does “javascript:void(0)” mean?
...
The void operator evaluates the given
expression and then returns undefined.
The void operator is often used merely
to obtain the undefined primitive
value, usually using “void(0)” (which
is equivalent to “void 0...
SQLite Reset Primary Key Field
..._table';
SQLite Autoincrement
SQLite keeps track of the largest
ROWID that a table has ever held using
the special SQLITE_SEQUENCE table. The
SQLITE_SEQUENCE table is created and
initialized automatically whenever a
normal table that contains an
AUTOINCREMENT column is created. The...
How do you rename a MongoDB database?
...single oplog entry that refers this database would have to be somehow invalidated or rewritten, and then if it's a sharded cluster, one also needs to add these changes to every shard if the DB is sharded, plus the config servers have all the shard metadata in terms of namespaces with their full name...
Google Maps zoom control is messed up
... used to zoom the map is messed up (it wasn't always like this). I have no idea what the cause is.
9 Answers
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