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| <a name="section-top"></a> |
| <h1 class="page">View Model as Parameter</h1> |
| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>As discussed <a href="https://lists.apache.org/thread.html/cbd18320bbf6e5c5e767283f9e675cf56e7f4692c109e1e79dbaa90a@%3Cusers.isis.apache.org%3E">on the mailing list</a>.</p> |
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| <div class="sect1"> |
| <h2 id="query"><a class="anchor" href="#query"></a>Query</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>I must provide a REST service accepting more complex view model as input |
| parameter.</p> |
| </div> |
| <div class="paragraph"> |
| <p>My view model parameter would look like</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@DomainObject( |
| nature = Nature.VIEW_MODEL, |
| objectType = "OfferTemplateFilter" |
| ) |
| @XmlRootElement(name = "OfferTemplateFilter") |
| @XmlAccessorType(XmlAccessType.FIELD) |
| @Getter @Setter |
| public class OfferTemplateFilter { |
| public List<String> selectedDeviceManufacturer = new ArrayList<>(); |
| public List<String> selectedDeviceSizes = new ArrayList<>(); |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>My REST domain service would be someting like</p> |
| </div> |
| <div class="listingblock"> |
| <div class="content"> |
| <pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@DomainService( |
| nature = NatureOfService.VIEW_REST_ONLY, |
| objectType = "OfferRestService" |
| ) |
| public class OfferRestService { |
| |
| @Action(semantics = SemanticsOf.IDEMPOTENT) |
| public OfferTemplateSelectorForCustomer |
| offerSelectorForCustomer( |
| final String subscriberNumber, |
| final OfferTemplateFilter filter) { |
| return offerSelectorRepository.create(subscriberNumber, filter); |
| } |
| ... |
| }</code></pre> |
| </div> |
| </div> |
| <div class="paragraph"> |
| <p>I’m wondering how this could be achieved without custom rest service. |
| Ideally the service consumer would post a kind of JSON structure where my |
| view model OfferTemplateFilter would be created?</p> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="possible-answer"><a class="anchor" href="#possible-answer"></a>Possible Answer…​</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>Rather than try to "upload" the <code>OfferTemplateFilter</code> view model as a parameter, instead treat it as a resource.</p> |
| </div> |
| <div class="paragraph"> |
| <p>That is:</p> |
| </div> |
| <div class="ulist"> |
| <ul> |
| <li> |
| <p>have a new service to create an instance of the filter, and then</p> |
| </li> |
| <li> |
| <p>update this filter (adding/removing from its two collections).</p> |
| </li> |
| <li> |
| <p>When done, pass a reference to the filter to the original REST service, as a regular reference.</p> |
| </li> |
| </ul> |
| </div> |
| <div class="paragraph"> |
| <p>Obviously the URL passed in the last step will be rather long and messy, but that’s not a problem per-se.</p> |
| </div> |
| </div> |
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