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How to override to_json in Rails?
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You are getting ArgumentError: wrong number of arguments (1 for 0) because to_json needs to be overridden with one parameter, the options hash.
def to_json(options)
...
end
Longer explanation of to_json, as_json, and rendering:
In ActiveSupport 2.3.3, as_json was added to address ...
How do I find the most recent git commit that modified a file?
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answered Jan 24 '11 at 16:50
Jo LissJo Liss
22.5k1414 gold badges101101 silver badges150150 bronze badges
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What is the difference between a generative and a discriminative algorithm?
...simple example. Suppose you have the following data in the form (x,y):
(1,0), (1,0), (2,0), (2, 1)
p(x,y) is
y=0 y=1
-----------
x=1 | 1/2 0
x=2 | 1/4 1/4
p(y|x) is
y=0 y=1
-----------
x=1 | 1 0
x=2 | 1/2 1/2
If you take a few minutes to stare at those two...
C library function to perform sort
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120
qsort() is the function you're looking for. You call it with a pointer to your array of data, th...
StringBuilder vs String concatenation in toString() in Java
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answered Oct 7 '09 at 15:51
Michael BorgwardtMichael Borgwardt
320k7373 gold badges453453 silver badges688688 bronze badges
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How to get form field's id in Django?
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answered Sep 21 '10 at 22:37
Will HardyWill Hardy
12.8k55 gold badges3838 silver badges4141 bronze badges
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warning: [options] bootstrap class path not set in conjunction with -source 1.5
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102
From a blog post:
To use javac from JDK N to cross-compiler to an older platform version, t...
Preview an image before it is uploaded
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function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function(e) {
$('#blah').attr('src', e.target.result);
}
reader.readAsDataURL(input.files[0]); // convert to base64 string
}
}
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ng-repeat finish event
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edited Jul 31 '16 at 8:01
Muhammad Omar ElShourbagy
5,06822 gold badges2727 silver badges4747 bronze badges
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Case insensitive Query with Spring CrudRepository
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201
Exactly as @Peter mentioned in the comment, just add IgnoreCase:
public interface DeviceTypeRe...