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Rails where condition using NOT NIL
...ils 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that I c...
setting multiple column using one update
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
GCM with PHP (Google Cloud Messaging)
...tiple registration IDs via PHP CURL.
// Payload data you want to send to Android device(s)
// (it will be accessible via intent extras)
$data = array('message' => 'Hello World!');
// The recipient registration tokens for this notification
// https://developer.android.com/google/gcm/
$i...
How to kill all processes matching a name?
... to kill every process containing the word amarok. I can print out the commands I want to execute. But how do I actually make the shell execute them. ie.
...
How to highlight a current menu item?
...25 '12 at 23:46
Renan Tomal FernandesRenan Tomal Fernandes
10.9k44 gold badges4545 silver badges3030 bronze badges
...
javascript scroll event for iPhone/iPad?
... stops panning—an onscroll event is generated when the page stops moving and redraws—as shown in Figure 6-1.
Similarly, scroll with 2 fingers fires onscroll only after you've stopped scrolling.
The usual way of installing the handler works e.g.
window.addEventListener('scroll', f...
How to install therubyracer gem on 10.10 Yosemite?
...
It's also worth mentioning that if you're using a Gemfile and still having trouble installing therubyracer, it's probably because there's a different version of libv8 that's already been added to the Gemfile.lock. Just add gem 'libv8', '3.16.14.3' (or whatever is the exact version o...
Resizing an iframe based on content
...he same origin policy, but it requires changes on both the iframed content and the framing page, so if you haven't the ability to request changes on both sides, this method won't be very useful to you, i'm afraid.
There's a browser quirk which allows us to skirt the same origin policy - javascript ...
Stop Mongoose from creating _id property for sub-document array items
...: ObjectId, ref: Student.modelName }, performance: [performanceSchema] }); and that stopped _id creation on the studentSchema but retained _id creation on the objects in the performance array of sub-documents. Not sure if both _id: false and id: false are needed.
– Web User
...
Javascript/DOM: How to remove all events of a DOM object?
...
I am not sure what you mean with remove all events. Remove all handlers for a specific type of event or all event handlers for one type?
Remove all event handlers
If you want to remove all event handlers (of any type), you could clone the element and replace it with its clone:
var clon...