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Validate uniqueness of multiple columns
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321
You can scope a validates_uniqueness_of call as follows.
validates_uniqueness_of :user_id, :...
How to remove line breaks (no characters!) from the string?
...e second parameter, trim() will strip these characters:
" " (ASCII 32 (0x20)), an ordinary space.
"\t" (ASCII 9 (0x09)), a tab.
"\n" (ASCII 10 (0x0A)), a new line (line feed).
"\r" (ASCII 13 (0x0D)), a carriage return.
"\0" (ASCII 0 (0x00)), the NUL-byte.
"\x0B" (ASCII 11 (0x0B)), ...
Django. Override save for model
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B Robster
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answered Nov 24 '10 at 17:43
petraszdpetr...
Mixins vs. Traits
... jk_jk_
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querySelector, wildcard element match?
...e.
– Erik Andersson
Jan 3 '12 at 15:32
hmm I can't do document.querySelectorAll("div.[id$='foo']")
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How to save as a new file and keep working on the original one in Vim?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
How to take emulator screenshots using Eclipse?
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Sunishtha SinghSunishtha Singh
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Highlight the difference between two strings in PHP
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answered Nov 26 '08 at 16:32
M.NM.N
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Default value of BOOL
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
Class does not implement its superclass's required members
... move on. :)
– matt
Aug 5 '14 at 13:32
1
I know this question and its answers are kind of old now...