The Angular 1.2 way:
# By default, angular returns undefined for invalid attributes which removes
# the value from the form field's ngModel (which means it's not sent to the
# server, and old values would not be overwritten).
#
# This directive makes sure that form fields with an invalid value return an
# empty string instead of undefined.
for elementType in ['input', 'textarea', 'select']
@app.directive elementType, ->
priority: 1
restrict: 'E'
require: '?ngModel'
link: (scope, element, attributes, ngModelController) ->
return unless ngModelController
if elementType == 'input'
inputType = angular.lowercase(attributes.type)
return if inputType == 'radio' || inputType == 'checkbox'
ngModelController.$parsers.push (value) ->
if ngModelController.$invalid && !value?
''
else
value
In Angular 1.3, there's an
allowInvalid option
Show archive.org snapshot
to allow invalid model values to be written to the ngModel.
Posted by Thomas Klemm to makandra dev (2014-12-11 13:20)