Hi,
I've put the above into a Mixin, which works fine, but the
implementation is a little "leaky" i.e. the containing component needs
to define it as an Implementation Mixin and set the tracker name /
context in the onPrepareForSubmit event.
I've been trying to change it so that the mixin can be applied to the
form itself and be all containing, such as,
<t:form t:mixins="multitrackerz" ...
Only I need to join, or pipe together the form's tracker parameter
with a parameter (or property) of the mixin, sort of like,
<t:form t:mixins="multitrackerz" t:tracker="multitrackerz.tracker" ...
only that's not possible. Is there another way to accomplish this?
I tried injecting the Form with @InjectContainer in the mixin, but I
can't set parameters there and there is no get / set Tracker on the
Form.
Anyone any ideas?
Steve.
On 18 February 2010 06:19, jose luis sanchez
<joseluis.sanc...@m-centric.com> wrote:
> Wow, you really saved my day !
> Thanks !
> El 17/02/2010, a las 23:09, Josh Canfield escribió:
>
>> The problem is that you really only have one instance of the Form
>> component, and so only one instance of the ValidationTracker. I poked
>> around and wasn't able to find an easier way to do this.
>>
>> Don't use ${} when passing the context.
>> <t:form t:id="edit" clientValidation="false" context="message.id">
>>
>> I used the index of the loop for the context. You can modify to use
>> the message.id
>>
>> @Component(parameters = {"tracker=tracker"})
>> private Form _edit;
>>
>> @Persist(PersistenceConstants.FLASH)
>> private Map<Integer, ValidationTracker> _indexedTrackers;
>>
>> /**
>> * Holds the tracker created when the form is posted and we don't
>> know which form is being processed
>> */
>> private ValidationTracker _tmpTracker;
>>
>> @OnEvent(EventConstants.PREPARE_FOR_SUBMIT)
>> void onPrepareForSubmitFromEdit(int index) {
>> _formIndex = index;
>> }
>>
>> @OnEvent(value = EventConstants.VALIDATE_FORM)
>> void validateForm() {
>> // don't clear the errors here. Clear them after render, otherwise you
>> lose edited value tracking
>> if (name == null) {
>> _edit.recordError("Sorry, name is mandatory");
>> }
>> }
>>
>> public ValidationTracker getTracker() {
>> if (_indexedTrackers == null) _indexedTrackers = new
>> HashMap<Integer, ValidationTracker>();
>> if (_formIndex == null) {
>> // it's a post and we haven't gotten to the part of the
>> action where the fields are processed
>> if (_tmpTracker == null) _tmpTracker = new
>> ValidationTrackerImpl();
>> return _tmpTracker;
>> }
>> if (_tmpTracker != null) {
>> // We have a temp tracker and a form index so we have now
>> processed the input fields
>> // so we can store the temp in the map and clear it.
>> _indexedTrackers.put(_formIndex, _tmpTracker);
>> _tmpTracker = null;
>> }
>>
>> // Make sure we have a tracker for all the forms
>> if (_indexedTrackers.get(_formIndex) == null)
>> _indexedTrackers.put(_formIndex, new ValidationTrackerImpl());
>>
>> return _indexedTrackers.get(_formIndex);
>> }
>>
>> public void setTracker(ValidationTracker tracker) {
>> if (_indexedTrackers == null) _indexedTrackers = new
>> HashMap<Integer, ValidationTracker>();
>> if (_formIndex == null) {
>> // We don't know which form this is for. This gets called
>> at the very end of the action
>> // so you probably have a bug if this is getting called
>> throw new RuntimeException("This shouldn't happen");
>> }
>> _indexedTrackers.put(_formIndex, tracker);
>> // Remember the trackers for the render.
>> setIndexedTrackers(_indexedTrackers);
>> }
>>
>> public void setIndexedTrackers(Map<Integer, ValidationTracker>
>> indexedTrackers) {
>> _indexedTrackers = indexedTrackers;
>> }
>>
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