form.FormController

1. - type in module ng

FormController keeps track of all its controls and nested forms as well as the state of them, such as being valid/invalid or dirty/pristine.

Each form directive creates an instance of FormController.

方法

• $rollbackViewValue();

  Rollback all form controls pending updates to the $modelValue.

  Updates may be pending by a debounced event or because the input is waiting for a some future event defined in ng-model-options. This method is typically needed by the reset button of a form that uses ng-model-options to pend updates.

• $commitViewValue();

  Commit all form controls pending updates to the $modelValue.

  Updates may be pending by a debounced event or because the input is waiting for a some future event defined in ng-model-options. This method is rarely needed as NgModelController usually handles calling this in response to input events.

• $addControl();

  Register a control with the form.

  Input elements using ngModelController do this automatically when they are linked.

• $removeControl();

  Deregister a control from the form.

  Input elements using ngModelController do this automatically when they are destroyed.

• $setValidity();

  Sets the validity of a form control.

  This method will also propagate to parent forms.

• $setDirty();

  Sets the form to a dirty state.

  This method can be called to add the 'ng-dirty' class and set the form to a dirty state (ng-dirty class). This method will also propagate to parent forms.

• $setPristine();

  Sets the form to its pristine state.

  This method can be called to remove the 'ng-dirty' class and set the form to its pristine state (ng-pristine class). This method will also propagate to all the controls contained in this form.

  Setting a form back to a pristine state is often useful when we want to 'reuse' a form after saving or resetting it.

属性

• $pristine

  boolean

  True if user has not interacted with the form yet.

• $dirty

  boolean

  True if user has already interacted with the form.

• $valid

  boolean

  True if all of the containing forms and controls are valid.

• $invalid

  boolean

  True if at least one containing control or form is invalid.

• $error

  Object

  Is an object hash, containing references to all invalid controls or forms, where: keys are validation tokens (error names), values are arrays of controls or forms that are invalid for given error name. Built-in validation tokens: email max maxlength min minlength number pattern required url