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Rails - Validate Presence Of Association?
...ccepts_nested_attributes_for with :allow_destroy => true: Nested models and parent validation. In this topic you can find solution.
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How to get a list of file names in different lines
...ne, without the extra details supplied by ls -l . I looked at ls --help and didn't find a solution. I tried doing
10 Ans...
How do I loop through or enumerate a JavaScript object?
...have to make sure that the key you get is an actual property of an object, and doesn't come from the prototype.
Here is the snippet:
var p = {
"p1": "value1",
"p2": "value2",
"p3": "value3"
};
for (var key in p) {
if (p.hasOwnProperty(key)) {
console.log(key + "...
Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]
...
Expanding on someone else's answer:
<script>
var myvar = <?php echo json_encode($myVarValue); ?>;
</script>
Using json_encode() requires:
PHP 5.2.0 or greater
$myVarValue encoded as UTF-8 (or US-ASCII, o...
Should I use int or Int32
In C#, int and Int32 are the same thing, but I've read a number of times that int is preferred over Int32 with no reason given. Is there a reason, and should I care?
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How to detect READ_COMMITTED_SNAPSHOT is enabled?
...etect whether a database has had its isolation level set via the T-SQL command ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON;
...
Get parts of a NSURL in objective-c
... way:
the protocol or scheme (here, http)
the :// delimiter
the username and the password (here there isn't any, but it could be username:password@hostname)
the host name (here, digg.com)
the port (that would be :80 after the domain name for instance)
the path (here, /news/business/24hr)
the param...
Android Fragment lifecycle over orientation changes
...created automatically
}
Be warned though: problems will occur if you try and access Activity Views from inside the Fragment as the lifecycles will subtly change. (Getting Views from a parent Activity from a Fragment isn't easy).
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How to vertically align an image inside a div
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The only (and the best cross-browser) way as I know is to use an inline-block helper with height: 100% and vertical-align: middle on both elements.
So there is a solution: http://jsfiddle.net/kizu/4RPFa/4570/
.frame {
height...
Path to MSBuild
...\MSBuild\ToolsVersions\4.0
may be what you're after; fire up regedit.exe and have a look.
Query via command line (per Nikolay Botev)
reg.exe query "HKLM\SOFTWARE\Microsoft\MSBuild\ToolsVersions\4.0" /v MSBuildToolsPath
Query via PowerShell (per MovGP0)
dir HKLM:\SOFTWARE\Microsoft\MSBuild\Too...