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How to get the original value of an attribute in Rails

...ails 5.1+ Copied from Lucas Andrade's answer below: https://stackoverflow.com/a/50973808/9359123 Appending _was is deprecated in rails 5.1, now you should append _before_last_save Something like: before_save object do_something_with object.name_before_last_save end Will return the name va...
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Android: textColor of disabled button in selector not showing?

..." encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <!-- disabled state --> <item android:state_enabled="false" android:color="#9D9FA2" /> <item android:color="#000"/> </selector> In your style.xml, put a reference to th...
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VIM + JSLint?

... did: Download http://jslint.webvm.net/mylintrun.js and http://www.jslint.com/fulljslint.js and put them in a directory of your choice. Then add the following line to the beginning of mylintrun.js: var filename= arguments[0]; and change last line of code in mylintrun.js ("print( ...)") to: p...
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Vertical (rotated) label in Android

...eight()); canvas.rotate(-90); } canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop()); getLayout().draw(canvas); canvas.restore(); } } EDIT Kotlin version: import android.content.Context import android.graphics.Canvas import android.text.BoringL...
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What is the purpose of @SmallTest, @MediumTest, and @LargeTest annotations in Android?

... As an addition to Davidann's answer and mainly OP's question in the comment: In the context of the code above, does it actually DO anything except leave a note for other developers? Does it enforce anything? Are there any tools that utilizes this annotation? What's it's purpose in Android...
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How can I keep Bootstrap popovers alive while being hovered?

...ap-css@*" data-semver="3.2.0" rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" /> <script data-require="jquery@*" data-semver="2.1.1" src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <script data-require="bootstr...
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Flask vs webapp2 for Google App Engine

...o webapp/WebOb. It makes support for SDK libraries a breeze, maintenance becomes a lot easier, it is more future-proof as new libraries and SDK features will work out of the box and there's the benefit of a large community working around the same App Engine tools. A specific webapp2 defense is summ...
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How to make an ImageView with rounded corners?

...owing code to manually round the corners of your images. http://www.ruibm.com/?p=184 This isn't my code, but I've used it and it's works wonderfully. I used it as a helper within an ImageHelper class and extended it just a bit to pass in the amount of feathering I need for a given image. Final co...
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Invalid URI: The format of the URI could not be determined

...r Uri. If you have the server name string server = "http://www.myserver.com"; and have a relative Uri path to append to it, e.g. string relativePath = "sites/files/images/picture.png" When creating a Uri from these two I get the "format could not be determined" exception unless I use the con...
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Sublime Text 2 - Link with Editor / Show file in sidebar

... https://github.com/sobstel/SyncedSideBar You can install this via the Package Control utility (although it doesn't mention it on the github page). share |...