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Check if OneToOneField is None in Django
...elect_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasattr(object, 'onetoonerevrelattr') and object.onetoonerevrelattr != None
– class stacker
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What is the difference between children and childNodes in JavaScript?
I have found myself using JavaScript and I ran across childNodes and children properties. I am wondering what the difference between them is. Also is one preferred to the other?
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Preferred way of loading resources in Java
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it will attempt to load foo.txt from the same package as the "this" class and with the class loader of the "this" class. If you put a "/" in front then you are absolutely referencing the resource.
this.getClass().getResource("/x/y/z/foo.txt")
will load the resource from the class loader of "this...
What is the MySQL JDBC driver connection string?
I am new to JDBC and I am trying to make a connection to a MySQL database.
I am using Connector/J driver, but I cant find the JDBC connection string for my Class.forName() method.
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How to set layout_weight attribute dynamically from code?
How can I set the value for the attribute layout_weight for button in android dynamically from java code ?
9 Answers
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jQuery Validate - require at least one field in a group to be filled
...t least one of a group of fields. I think I've got a pretty good solution, and wanted to share it. Please suggest any improvements you can think of.
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Keyboard shortcuts in WPF
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One way is to add your shortcut keys to the commands themselves them as InputGestures. Commands are implemented as RoutedCommands.
This enables the shortcut keys to work even if they're not hooked up to any controls. And since menu items understand keyboard gestures, they'...
How to get GET (query string) variables in Express.js on Node.js?
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In Express it's already done for you and you can simply use req.query for that:
var id = req.query.id; // $_GET["id"]
Otherwise, in NodeJS, you can access req.url and the builtin url module to url.parse it manually:
var url = require('url');
var url_parts = url...
How to justify a single flexbox item (override justify-content)
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This technique is excellent and it also works in the vertical direction. For instance, you want the last element inside a fixed height container to stick to the bottom. You can use ``` .container { flex-direction: column; justify-conte...
Android webview launches browser when calling loadurl
I created an Activity that has a title and a web view in a LinearLayout . In the onResume() method it calls webView.loadUrl(url) . The problem is that the activity first shows the title with the rest of the screen blank, then the device browser is launched with the page for the URL. What I wan...