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Rails: update_attribute vs update_attributes
...update_attributes uses save or you can say save(true).
Sorry for the long description but what I want to say is important. save(perform_validation = true), if perform_validation is false it bypasses (skips will be the proper word) all the validations associated with save.
For second question
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When should you NOT use a Rules Engine? [closed]
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I think partitioning rules sets to keep them small is a better option. Aspects can be a way to share a common rule set among many objects.
I prefer a simpler, more data driven approach wherever possible.
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'0000-00-00 00:00:00' can not be represented as java.sql.Timestamp error
...ork equally well.
SET sql_mode = 'NO_ZERO_DATE';
I put this in my table descriptions and it solved the problem of
'0000-00-00 00:00:00' can not be represented as java.sql.Timestamp
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im...
Chmod 777 to a folder and all contents [duplicate]
...e
Each number has meaning in permission. Do not give full permission.
N Description ls binary
0 No permissions at all --- 000
1 Only execute --x 001
2 Only write -w- 010
3 Write and execute -...
What's the point of OOP?
...ate/NHibernate, Logging Frameworks, various language collection types, the ASP.NET stack, The JSP stack etc... These are all things that heavily rely on OOP in their codebases.
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How to scroll up or down the page to an anchor using jQuery?
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Description
You can do this using jQuery.offset() and jQuery.animate().
Check out the jsFiddle Demonstration.
Sample
function scrollToAnchor(aid){
var aTag = $("a[name='"+ aid +"']");
$('html,body').animate({scro...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...e those frontiers and give some new reasons for C++ developers to use it.
Description
To use either VBScript or JScript is fairly simple in a VB and C++ Application thanks to Microsoft's development efforts to create Windows Scripting technology. A developer only needs to know how to use the Micro...
Intro to GPU programming [closed]
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Try GPU++ and libSh
LibSh link has a good description of how they bound the programming language to the graphics primitives (and obviously, the primitives themselves), and GPU++ describes what its all about, both with code examples.
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How do you redirect to a page using the POST verb?
... refresh used the old URL). This technique is essentially very similar to asp.net's Server.Transfer, and the same cautions should be exercised.
– AaronLS
Jun 26 '12 at 15:40
15
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Pass ruby script file to rails console
...e:
In lib/tasks/example.rake:
namespace :example do
desc "Sample description you'd see if you ran: 'rake --tasks' in the terminal"
task create_user: :environment do
User.create! first_name: "Foo", last_name: "Bar"
end
end
And then in the terminal run:
rake example:cre...