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Rails: select unique values from a column
...rails 5+
Model.distinct.pluck(:rating)
Update
Apparently, as of rails 5.0.0.1, it works only on "top level" queries, like above. Doesn't work on collection proxies ("has_many" relations, for example).
Address.distinct.pluck(:city) # => ['Moscow']
user.addresses.distinct.pluck(:city) # => [...
Simplest way to serve static data from outside the application server in a Java web application
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10 Answers
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A type for Date only in C# - why is there no Date type?
...g-forward daylight saving time transition moves the clock from 11:59:59 to 01:00:00.
A date-time always refers to a specific time within the day, while a date-only may refer to the beginning of the day, the end of the day, or the entire range of the day.
Attaching a time to a date can lead to the d...
Test if object implements interface
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if (object is IBlah)
or
IBlah myTest = originalObject as IBlah
if (myTest != null)
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How to use the CancellationToken property?
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edited Feb 19 at 14:08
Eliahu Aaron
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Comet and jQuery [closed]
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answered Sep 26 '08 at 0:17
Morgan ARR AllenMorgan ARR Allen
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Search for string and get count in vi editor
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answered Apr 3 '09 at 20:43
Kevin BeckKevin Beck
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How do I add a bullet symbol in TextView?
...You could try with •
Update
Just to clarify: use setText("\u2022 Bullet"); to add the bullet programmatically. 0x2022 = 8226
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How to detect input type=file “change” for the same file?
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answered Nov 7 '10 at 15:14
BrunoLMBrunoLM
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What’s the best RESTful method to return total number of items in an object?
...o object URLs and affect my data. However, this data is paged (limited to 30 results at a time).
12 Answers
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