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Rails: where does the infamous “current_user” come from?

I've been looking around recently into Rails and notice that there are a lot of references to current_user . Does this only come from Devise? and do I have to manually define it myself even if I use Devise? Are there prerequisites to using current_user (like the existence of sessions, users, etc)...
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Cannot generate iOS App archive in xcode

... a iOS App archive from an application. The application compiles just fine and even works in the simulator. Now I wanted to make som ad hoc testing and cannot generate the iOS App Archive. When I click on the Product -> Archive it generates a generic xcode archive. Can anyone help me. I should ment...
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How to modify PATH for Homebrew?

...l ruby 1.9.3, read that I need to install homebrew first. Ran brew doctor, and it's giving me a bunch of warnings. One of which is: ...
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How do you programmatically set an attribute?

Suppose I have a python object x and a string s , how do I set the attribute s on x ? So: 4 Answers ...
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i18n Pluralization

... } } } } } Native speakers may enjoy cases such as 111 and 121. And here the test results: zero: 0 запросов/куриц/яблок one: 1 запрос/курица/яблоко few: 3 запроса/курицы/яблока many: 5 запросов/куриц/яблок...
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Set a DateTime database field to “Now”

...ateTime.Now will do this or If I should first convert the date to a string and then add it to the request ? – Thibault Witzig Dec 20 '10 at 9:41 ...
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How do you create nested dict in Python?

I have 2 CSV files: 'Data' and 'Mapping': 4 Answers 4 ...
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Check a radio button with javascript

... Technically it's CSS selector syntax. jQuery just borrowed and extended it – Tim Seguine Jan 16 '14 at 16:10 ...
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python list by value not by reference [duplicate]

... what is the difference between a regular copy and a deep copy? Why does what happens above happen? I think I have a general understanding, it seems to be like the same problem encountered by the op at the second layer. How does it work internally? –...
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Split Python Flask app into multiple files

I'm having trouble understanding how to split a flask app into multiple files. 4 Answers ...