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Rails where condition using NOT NIL
...Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that I...
Setting href attribute at runtime
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answered Dec 3 '10 at 12:20
user529141user529141
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Store query result in a variable using in PL/pgSQL
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201
I think you're looking for SELECT INTO:
select test_table.name into name from test_table where...
How do I do a 'git status' so it doesn't display untracked files without using .gitignore?
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505
Use this:
git status -uno
which is equivalent to:
git status --untracked-files=no
It's a ...
What character encoding should I use for a HTTP header?
...rset [ISO-8859-1], supporting other charsets only
through use of [RFC2047] encoding. In practice, most HTTP header
field values use only a subset of the US-ASCII charset [USASCII].
Newly defined header fields SHOULD limit their field values to
US-ASCII octets. A recipient SHOUL...
Is module __file__ attribute absolute or relative?
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Ioannis Filippidis
7,36866 gold badges6060 silver badges9393 bronze badges
answered Aug 19 '11 at 4:23
agfagf
140k323...
Is there a performance difference between a for loop and a for-each loop?
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answered Nov 2 '08 at 12:47
Vijay DevVijay Dev
23k2020 gold badges7070 silver badges9696 bronze badges
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Why is 'this' a pointer and not a reference?
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180
When the language was first evolving, in early releases with real users, there were no reference...
How does one escape backslashes and forward slashes in VIM find/search?
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answered Mar 17 '10 at 19:19
CascabelCascabel
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What is “Linting”?
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1100
Linting is the process of running a program that will analyse code for potential errors.
See l...