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How to create duplicate allowed attributes
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answered Feb 16 '09 at 14:59
Anton GogolevAnton Gogolev
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Run a callback only if an attribute has changed in Rails
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200
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_chan...
Random record in ActiveRecord
...a table via ActiveRecord. I've followed the example from Jamis Buck from 2006 .
25 Answers
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RESTful API methods; HEAD & OPTIONS
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60
As per: http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
9.2 OPTIONS
The OPTIONS method r...
How to get an array of unique values from an array containing duplicates in JavaScript? [duplicate]
Given a ['0','1','1','2','3','3','3'] array, the result should be ['0','1','2','3'] .
17 Answers
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How to check status of PostgreSQL server Mac OS X
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edited Nov 2 '11 at 4:03
answered Nov 2 '11 at 3:25
Boh...
JavaScript plus sign in front of function expression
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answered Nov 12 '12 at 10:07
T.J. CrowderT.J. Crowder
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Use of 'use utf8;' gives me 'Wide character in print'
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110
Without use utf8 Perl interprets your string as a sequence of single byte characters. There are ...
HTTP Content-Type Header and JSON
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Luke Stevenson
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answered Dec 16 '13 at 20:48
Rocket HazmatRock...
Private vs Public in Cache-Control
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edited Aug 16 '10 at 11:33
answered Aug 16 '10 at 10:51
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