- directive in module ngMessages
ngMessages is a directive that is designed to show and hide messages based on the state of a key/value object that it listens on. The directive itself complements error message reporting with the ngModel $error object (which stores a key/value state of validation errors).
ngMessages manages the state of internal messages within its container element. The internal messages use the ngMessage directive and will be inserted/removed from the page depending on if they're present within the key/value object. By default, only one message will be displayed at a time and this depends on the prioritization of the messages within the template. (This can be changed by using the ng-messages-multiple or multiple attribute on the directive container.)
A remote template can also be used to promote message reusability and messages can also be overridden.
Click here to learn more about ngMessages and ngMessage.
Directive Info
- This directive executes at priority level 0.
Usage
<!-- using attribute directives --> <ANY ng-messages="expression" role="alert"> <ANY ng-message="stringValue">...</ANY> <ANY ng-message="stringValue1, stringValue2, ...">...</ANY> <ANY ng-message-exp="expressionValue">...</ANY> </ANY> <!-- or by using element directives --> <ng-messages for="expression" role="alert"> <ng-message when="stringValue">...</ng-message> <ng-message when="stringValue1, stringValue2, ...">...</ng-message> <ng-message when-exp="expressionValue">...</ng-message> </ng-messages>
Arguments
| Param | Type | Details |
|---|---|---|
| ngMessages | string | an angular expression evaluating to a key/value object (this is typically the $error object on an ngModel instance). |
| ngMessagesMultiple | multiple (optional) | string | when set, all messages will be displayed with true |
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