You found a bug! We've classified it as TOUCH-4610 . We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
  1. #1
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    Default Radiofield does not allow for boolean fields

    Radiofield does not allow for boolean fields


    Bug:

    Radio buttons cannot have the value false; because they check for a falsy value instead of an undefined value, they never return the correct value when queried (eg with #getGroupValue.)

    That is, if the declared value of a radio button is false, the radio button will respond with nil when queried for its value. The effect (and visible indicator of the bug) is that, when a form is displayed and the value of the record's corresponding attribute is false, the checkbox with value=false will never be checked when you open the form.

    It's maybe easier to see the bug in the code.

    Code with bug:

    radio.js line 66:

    Code:
        getValue: function() {
            return (this._value) ? this._value : null;
        },
    Fix:

    Code:
        getValue: function() {
            return (typeof this._value === 'undefined') ? null : this._value;
        },


    Use case:

    In my app, we have a boolean field, "is_private". But we want to display the field to the user as a set of radio buttons, one with the label "Public" and the value false, and the other labelled "Private" and the value true. With this bug, the form would never display a false value for the attribute. Even if 'private' is false, neither radio button would be checked when opening the form.

  2. #2
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    Default


    Interestingly, this same line in the getValue() function has been bug-reported and fixed once before. Previously it did not work with any values. The fix made it work with all values except booleans: http://www.sencha.com/forum/showthread.php?200708

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    Thanks for the report! I have opened a bug in our bug tracker.

  4. #4
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    Default


    Bump.A year later, fix appears to not be implemented yet. Every time I update sencha touch I have to re-implement this (and other) fixes.This fix is straightforward, the code for the fix is there. The use case — having two radio buttons, one with "true" and one with "false" as the value, seems pretty clear.

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