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ruby on rails f.select options with custom attributes
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Rails CAN add custom attributes to select options, using the existing options_for_select helper. You almost had it right in the code in your question. Using html5 data-attributes:
<%= f.select :country_id, options_for_select(
@countries.map{ |c| [c.name, c.id, {'data-currency_co...
What is a MIME type?
...have tried to look into it and know that it is Multipurpose Internet Mail Extensions (MIME) but no suitable explanation of how it relates to browser plug-ins, as in what I need to know about it for building plug-ins, is provided, please explain in clear and simple words. What is it? Why do plug-ins ...
What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
What is the difference between NoClassDefFoundError and ClassNotFoundException ?
15 Answers
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Is it possible to rotate a drawable in the xml description?
...to use the same resource so I don't have to add 3 more resources that are exactly like the original but rotated. But I also don't want to mix the code with things that can be declared in the XML or make transformations with a matrix that will cost processing time.
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Adaptive segue in storyboard Xcode 6. Is push deprecated?
Xcode 6 interface builder by default has new checkbox "use size classes". It makes views adaptive.
7 Answers
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Build an iOS app without owning a mac? [closed]
...t to develop iOS apps you don't want to pay anything,
You just need Mac + XCode IDE
Get Mac Mini or Mac Machine
Create Developer Account on Apple its free
After login developer account you can download Xcode IDE's .dmg file
That's all.
Now you just install Xcode and start developing iOS apps a...
Do NSUserDefaults persist through an Update to an app in the Appstore?
...ind a link to any form of Apple documentation that says this, It would be excellent.... In the documentation for NSUserDefaults it says nothing about this, so I think I had (incorrectly) assumed the defaults get wiped. This would seem the safest way for Apple to update apps surely!
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In C++, what is a “namespace alias”?
...f referring to a long namespace name by a different, shorter name.
As an example, say you wanted to use the numeric vectors from Boost's uBLAS without a using namespace directive. Stating the full namespace every time is cumbersome:
boost::numeric::ublas::vector<double> v;
Instead, you can...
How to implement if-else statement in XSLT?
I am trying to implement an if -else statement in XSLT but my code just doesn't parse. Does anyone have any ideas?
5 Answe...
python requests file upload
...ad_file is meant to be the file, use:
files = {'upload_file': open('file.txt','rb')}
values = {'DB': 'photcat', 'OUT': 'csv', 'SHORT': 'short'}
r = requests.post(url, files=files, data=values)
and requests will send a multi-part form POST body with the upload_file field set to the contents of th...