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How do I automatically sort a has_many relationship in Rails?
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152
You can specify the sort order for the bare collection with an option on has_many itself:
class...
MySQL select with CONCAT condition
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answered Apr 20 '11 at 18:02
mdmamdma
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jQuery lose focus event
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420
Use blur event to call your function when element loses focus :
$('#filter').blur(function() ...
Format LocalDateTime with Timezone in Java8
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213
LocalDateTime is a date-time without a time-zone. You specified the time zone offset format sy...
Is it .yaml or .yml?
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227
The nature and even existence of file extensions is platform-dependent (some obscure platforms...
Spring classpath prefix difference
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208
SIMPLE DEFINITION
The classpath*:conf/appContext.xml simply means that all appContext.xml fil...
How to use SCNetworkReachability in Swift
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(This answer was extended repeatedly due to changes in the Swift language, which made it a bit...
What are Flask Blueprints, exactly?
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291
A blueprint is a template for generating a "section" of a web application. You can think of i...
Knockout.js bound input value not updated when I use jquery .val('xyz')
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.val() does not trigger the change event. So, you can just do .val("blah").change() for KO to p...
Combine two or more columns in a dataframe into a new column with a new name
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132
Use paste.
df$x <- paste(df$n,df$s)
df
# n s b x
# 1 2 aa TRUE 2 aa
# 2 3 bb F...