Shows How Grails Could Take Form Input and Dispatch to Domain Model Aggregate Method

gistfile1.txt

planBacklogItem.gsp
-------------------
<g:form action="product:planBacklogItem" >
<fieldset class="form">
<g:hiddenField name="product:productId" value="${product.productId}"/>
<g:textField name="summary" value=""/>
<g:textField name="story" value=""/>
<g:textField name="storyPoints" value=""/>
...
</fieldset>
<fieldset class="buttons">
<g:submitButton name="planBacklogItem" class="save" value="Plan Backlog Item" />
</fieldset>

Grails Mapping
--------------
Rather than map from form fields to BacklogItem setters, map from form
action/command to given Product's command method and pass form field
values as parameters.

Product.groovy
--------------

BacklogItem planBacklogItem(String summary, String story, String storyPoints, ...) {
   BacklogItem backlogItem = new BacklogItem(...);
   
   DomainEventPublisher.instance().publish(new ProductBacklogItemPlanned(...));

   return backlogItem;
}