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Validate uniqueness of multiple columns
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You can scope a validates_uniqueness_of call as follows.
validates_uniqueness_of :user_id, :s...
How can I copy the content of a branch to a new local branch?
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edited Feb 21 '13 at 10:00
answered Feb 21 '13 at 9:44
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Adding Xcode Workspace Schemes to Version Control
...ted Sep 13 '17 at 6:01
user2067021
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answered Aug 22 '11 at 12:19
Josh...
How can I access a JavaScript object which has spaces in the object's key?
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answered Nov 29 '11 at 21:29
jAndyjAndy
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How to loop through a HashMap in JSP?
...field for html?
– blub
Dec 2 '09 at 21:35
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this is not answering the question which is specific ...
How do I modify a MySQL column to allow NULL?
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answered Aug 12 '15 at 13:21
Jan NejedlyJan Nejedly
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How do I check for last loop iteration in Django template?
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answered May 7 '09 at 21:59
Paolo BergantinoPaolo Bergantino
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What is the mouse down selector in CSS?
...cript.
– jansmolders86
Mar 2 '16 at 21:51
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Check if a given Type is an Enum
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TomTom
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Hex representation of a color with alpha channel?
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Patrick Klug
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answered Sep 14 '09 at 2:36
Kelly GendronKelly ...