Numbers with comma as decimal will save the number as string with the comma

[bpanatta]

Prerequisites

• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• The issue still exists against the latest master branch of yii2-number.
• This is not an usage question. I confirm having gone through and read the documentation and demos.
• This is not a general programming / coding question. (Those should be directed to the webtips Q & A forum).
• I have attempted to find the simplest possible steps to reproduce the issue.
• I have included a failing test as a pull request (Optional).

Steps to reproduce the issue

The best way to reproduce is searching the NumberControl demo for "German Amount" and changing the input value, this will give the same result as in my code.
Still, here is how to get there by coding:

1. Create a NumberControl widget inside a form with 'radixPoint' => ','

echo NumberControl::widget([
    'name' => 'amount_german',
    'value' => 78232.01,
    'maskedInputOptions' => [
        'groupSeparator' => '.',
        'radixPoint' => ','
    ],
]);

2. Change the default value and submit the form.
3. Check the submitted data.

Expected behavior and actual behavior

When I follow those steps, I see the number as a string with the comma as the decimal separator, i.e.: "1234,01".

I was expecting to get the number as a number, having decimals separated by a dot, i.e.: 1234.01.
Since the initial value passed to the widget is a number with dot as decimal separator, I expect to receive a number with a dot as decimal separator from the widget. Thus, keeping the data integrity.

Environment

Browsers

• Google Chrome
• Mozilla Firefox
• Internet Explorer
• Safari

Operating System

• Windows
• Mac OS X
• Linux
• Mobile

Libraries

• jQuery version: 3.2.1
• yii2-number version: 1.0.1

Isolating the problem

• This bug happens on the docs and demos page
• The bug happens consistently across all tested browsers
• This bug happens when using yii2-number without other plugins.