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ActiveRecord OR query
...mely SQL Injection. So, we will have to sanitize the user input before providing it to a SQL query that has to be run against the database. This will be handled by ORMs, and these have been handling the edge cases, that we tend to miss. So, it is always advisable to use ORM to create SQL queries.
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How to get request URI without context path?
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If you're inside a front contoller servlet which is mapped on a prefix pattern, then you can just use HttpServletRequest#getPathInfo().
String pathInfo = request.getPathInfo();
// ...
Assuming that the servlet in your example is mapped...
val() doesn't trigger change() in jQuery [duplicate]
...x when I change its value with a button, but it doesn't work. Check this fiddle .
9 Answers
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Delete all rows in an HTML table
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Easily the most efficient solution, provided of course that the JavaScript developer is allowed to modify the HTML.
– Blazemonger
Sep 1 '11 at 14:26
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Is there a 'box-shadow-color' property?
... display: inline-block;
background: white;
height: 100px;
width: 100px;
margin: 30px;
border-radius: 50%;
}
<div class="green"></div>
<div class="red"></div>
The bug mentioned in the comment below has since been fixed :)
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How to concatenate columns in a Postgres SELECT?
...d string literal ', ' defaults to type text making the whole expression valid in any case.
For non-string data types, you can "fix" the 1st statement by casting at least one argument to text. (Any type can be cast to text):
SELECT a::text || b AS ab FROM foo;
Judging from your own answer, "does ...
Is there any way to call a function periodically in JavaScript?
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You want setInterval():
var intervalID = setInterval(function(){alert("Interval reached");}, 5000);
The first parameter to setInterval() can also be a string of code to be evaluated.
You can clear a periodic function with:
clearInterval(intervalID);
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getting the X/Y coordinates of a mouse click on an image with jQuery [duplicate]
...alculate how far from the bottom or right, you would have to use jQuery's width and height methods.
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Stopping an Android app from console
Is it possible to stop an Android app from the console? Something like:
11 Answers
11
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Easiest way to rename a model using Django/South?
...rename_foo_to_bar --empty
(Update 2: try --auto instead of --empty to avoid the warning below. Thanks to @KFB for the tip.)
If you're using an older version of south, you'll need startmigration instead of schemamigration.
Then manually edit the migration file to look like this:
class Migration...