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Add _.restrict(source, *keys)

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Return a clone of the source with only the properties named in *keys
(either stings or arrays containing strings).

Especially useful for avoiding mass-assignment vulnerabilities.
This commit is contained in:
Chris Leishman
2012-03-24 12:26:03 -07:00
parent 00ed5d70c8
commit 7c95237845
3 changed files with 33 additions and 0 deletions
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10
test/objects.js
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@@ -41,6 +41,16 @@ $(document).ready(function() {
equal(_.keys(result).join(''), 'ab', 'extend does not copy undefined values');
});
test("objects: restrict", function() {
var result;
result = _.restrict({a:1, b:2, c:3}, 'a', 'c');
ok(_.isEqual(result, {a:1, c:3}), 'can restrict properties to those named');
result = _.restrict({a:1, b:2, c:3}, ['b', 'c']);
ok(_.isEqual(result, {b:2, c:3}), 'can restrict properties to those named in an array');
result = _.restrict({a:1, b:2, c:3}, ['a'], 'b');
ok(_.isEqual(result, {a:1, b:2}), 'can restrict properties to those named in mixed args');
});
test("objects: defaults", function() {
var result;
var options = {zero: 0, one: 1, empty: "", nan: NaN, string: "string"};