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Run a callback only if an attribute has changed in Rails
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Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://github....
How to handle button clicks using the XML onClick within Fragments
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18 Answers
18
Active
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How does “304 Not Modified” work exactly?
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edited Mar 29 '17 at 21:58
Tgsmith61591
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Turn off Visual Studio Attach security warning when debugging IIS
When using Visual Studio 2008 or 2010, every time you attach to IIS w3wp.exe you get an Attach Security Warning,
11 Answer...
Best Way to read rss feed in .net Using C#
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179
Add System.ServiceModel in references
Using SyndicationFeed:
string url = "http://fooblog.co...
When do I use a dot, arrow, or double colon to refer to members of a class in C++?
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edited Sep 26 '17 at 17:11
displayName
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Load and execute external js file in node.js with access to local variables?
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134
Just do a require('./yourfile.js');
Declare all the variables that you want outside access as...
How to prevent line break at hyphens on all browsers
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edited Jan 6 '12 at 21:32
answered Jan 6 '12 at 8:12
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