fix(Plural): A logic bug in plural

[abruzzihraig]

Guys, I found a plural bug when I was developing with your library.

In your original code there is a line:

prefixDebug(n === 1 ? string : stringPlural);

That means the 'n' must be a Number rather than a String or something else.

But how did you get the 'n'? I found that you did something like this:

$parse(attrs.translateN)(scope)

That means if the translateN on attrs is a String, the 'n' will be String as well. Then you will never get a right plural result when the count changing.

So I just made the change to ensure the logic is safe.

And I think maybe it also fixed the issue #305 and the similar other ones.

[rubenv]

@abruzzihraig I'm pretty sure that functionality works. Nonetheless, if we want to get this in, you'll need to add a unit test, which fails without the fix applied.

[abruzzihraig]

So if you pretty sure that functionality works, why I can get this:

I was totally followed by the developer guide.

On Wed, Sep 21, 2016 at 18:25 Ruben Vermeersch notifications@github.com
wrote:

@abruzzihraig https://github.com/abruzzihraig I'm pretty sure that
functionality works. Nonetheless, if we want to get this in, you'll need to
add a unit test, which fails without the fix applied.

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Yang He

[rubenv]

Note that we have a test that tests exactly this:

angular-gettext/test/unit/directive.js

Lines 134 to 143 in 7d7ac67

	it("Changing the scope should update the translation, changed count", function () {
	$rootScope.count = 3;
	var el = $compile("<div><div translate translate-n=\"count\" translate-plural=\"{{count}} boats\">One boat</div></div>")($rootScope);
	$rootScope.$digest();
	assert.equal(el.text(), "3 boats");
	$rootScope.$apply(function () {
	$rootScope.count = 1;
	});
	assert.equal(el.text(), "One boat");
	});

[zhuangya]

@rubenv when input bind to something like activity.length as in #305, after the value changed, typeof activity.length would become string rather than number.

i think angular-gettext should handle this situation.

you can have a look at the page below
https://gist.github.com/zhuangya/38476c504d29d39d8d2bfae5e11b5060

:)

also cc @sebrojas14

[zhuangya]

but i think it would be better if convert n to number :/

[zhuangya]

also, there should be a new test case for this.

[zhuangya]

update: living demo on jsfiddle goes here: https://jsfiddle.net/hxv260y6/