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  1. directive in module ng

Allows tuning how model updates are done. Using ngModelOptions you can specify a custom list of events that will trigger a model update and/or a debouncing delay so that the actual update only takes place when a timer expires; this timer will be reset after another change takes place.

Given the nature of ngModelOptions, the value displayed inside input fields in the view might be different from the value in the actual model. This means that if you update the model you should also invoke $rollbackViewValue on the relevant input field in order to make sure it is synchronized with the model and that any debounced action is canceled.

The easiest way to reference the control's $rollbackViewValue method is by making sure the input is placed inside a form that has a name attribute. This is important because form controllers are published to the related scope under the name in their name attribute.

Any pending changes will take place immediately when an enclosing form is submitted via the submit event. Note that ngClick events will occur before the model is updated. Use ngSubmit to have access to the updated model.

ngModelOptions has an effect on the element it's declared on and its descendants.

Directive Info

  • This directive executes at priority level 0.

Usage

  • as attribute: 
    <ANY
  ng-model-options="Object">
...
</ANY>

Arguments

Param Type Details
ngModelOptions Object

options to apply to the current model. Valid keys are:

  • updateOn: string specifying which event should the input be bound to. You can set several events using an space delimited list. There is a special event called default that matches the default events belonging of the control.
  • debounce: integer value which contains the debounce model update value in milliseconds. A value of 0 triggers an immediate update. If an object is supplied instead, you can specify a custom value for each event. For example: ng-model-options="{ updateOn: 'default blur', debounce: { 'default': 500, 'blur': 0 } }"
  • allowInvalid: boolean value which indicates that the model can be set with values that did not validate correctly instead of the default behavior of setting the model to undefined.
  • getterSetter: boolean value which determines whether or not to treat functions bound to ngModel as getters/setters.
  • timezone: Defines the timezone to be used to read/write the Date instance in the model for <input type="date">, <input type="time">, ... . It understands UTC/GMT and the continental US time zone abbreviations, but for general use, use a time zone offset, for example, '+0430' (4 hours, 30 minutes east of the Greenwich meridian) If not specified, the timezone of the browser will be used.

The following example shows how to override immediate updates. Changes on the inputs within the form will update the model only when the control loses focus (blur event). If escape key is pressed while the input field is focused, the value is reset to the value in the current model.

This one shows how to debounce model changes. Model will be updated only 1 sec after last change. If the Clear button is pressed, any debounced action is canceled and the value becomes empty.

This one shows how to bind to getter/setters:

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Licensed under the Creative Commons Attribution License 4.0.
https://code.angularjs.org/1.4.14/docs/api/ng/directive/ngModelOptions