I am trying to show / hide some HTML using the ng-show and ng-hide functions provided by AngularJS.
According to the documentation, the respective usage for these functions are as follows:
ngHide – {expression} - If the expression truthy then the element is shown or hidden respectively. ngShow – {expression} - If the expression is truthy then the element is shown or hidden respectively.
This works for the following usecase:
<p ng-hide="true">I'm hidden</p>
<p ng-show="true">I'm shown</p>
However, should we use a parameter from an object as the expression then the ng-hide and ng-show are given the correct true/false value but the values are not treated as a boolean so always return false:
Source
<p ng-hide="{{foo.bar}}">I could be shown, or I could be hidden</p>
<p ng-show="{{foo.bar}}">I could be shown, or I could be hidden</p>
Result
<p ng-hide="true">I should be hidden but I'm actually shown</p>
<p ng-show="true">I should be shown but I'm actually hidden</p>
This is either a bug or I am not doing this correctly.
I cannot find any relative information on referencing object parameters as expressions so I was hoping anyone with a better understanding of AngularJS might be able to help me out?
The foo.bar reference should not contain the braces:
<p ng-hide="foo.bar">I could be shown, or I could be hidden</p>
<p ng-show="foo.bar">I could be shown, or I could be hidden</p>
Angular expressions need to be within the curly-brace bindings, where as Angular directives do not.
See also Understanding Angular Templates.