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Paperclip::Errors::MissingRequiredValidatorError with Rails 4
...ing this error when I try to upload using paperclip with my rails blogging app.
Not sure what it is referring to when it says "MissingRequiredValidatorError"
I thought that by updating post_params and giving it :image it would be fine, as both create and update use post_params
...
Remove icon/logo from action bar on android
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If you've defined android:logo="..." in the <application> tag of your AndroidManifest.xml, then you need to use this stuff to hide the icon:
pre-v11 theme
<item name="logo">@android:color/transparent</item>
v11 and up theme
<item name="android:log...
Android DialogFragment vs Dialog
...ia its constructor and then pass messages back to my fragment's handler as approprirate on the various click events. Again various ways of doing that but the following works for me.
In the dialog hold a message and instantiate it in the constructor:
private Message okMessage;
...
okMessage = handl...
How to create a function in a cshtml template?
...iple template files by putting the file with the @helper directive into an App_Code directory. Whereas, the @functions directive allows a function to be used only by the template that declares it.
– Jon Davis
Jul 4 '11 at 21:24
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“Invalid signature file” when attempting to run a .jar
...ar as
is and just add it as a dependency in the manifest file for your
application jar file.
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Mongoose and multiple database in single node.js project
... sub project will have one Mongodb database and Mongoose will be use for wrapping and querying db. But the problem is
6 An...
How to run function in AngularJS controller on document ready?
...n simply attach the callback in the controller like so:
angular.module('MyApp', [])
.controller('MyCtrl', [function() {
angular.element(document).ready(function () {
document.getElementById('msg').innerHTML = 'Hello';
});
}]);
http://jsfiddle.net/jgentes/stwyvq38/1/
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Converting JSON data to Java object
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I use it in an android app. It is not the fastest possible solution but it is simple enough to program to justify the lack of performance for the user until now. Maybe in a later version of the app it will be removed for a faster solution.
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How to turn on front flash light programmatically in Android?
...
If so then Turn Off/On
If not then you can do whatever, according to your app
needs.
For Checking availability of flash in the device:
You can use the following:
context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
which will return true if a flash is available...
Setting action for back button in navigation controller
...he view controller where you want to detect the press:
-(void) viewWillDisappear:(BOOL)animated {
if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
// back button was pressed. We know this is true because self is no longer
// in the navigation stac...