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PORestKit - RKFetchedResultsTableController : mapObjectsWithClass
 

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    <p>Hi,</p> <p>I'm using a <code>RKFetchedResultsTableController</code> in order to fetch data from my WS and drive my tableview.</p> <p>I'm using <code>RKTableViewCellMapping</code> to map my model &amp; cells.</p> <p>Here's how I set up the cellMapping :</p> <pre class="lang-c prettyprint-override"><code>RKTableViewCellMapping *cellMapping = [RKTableViewCellMapping cellMapping]; cellMapping.cellClassName = @"CrudCategoryCell"; cellMapping.reuseIdentifier = @"CrudCategory"; cellMapping.rowHeight = 100; [cellMapping mapKeyPath:@"name.name" toAttribute:@"nameLabel.text"]; [cellMapping mapKeyPath:@"desc.desc" toAttribute:@"descLabel.text"]; [self.tableController mapObjectsWithClass:[CrudCategory class] toTableCellsWithMapping:cellMapping]; </code></pre> <p>As you can see, my model is represented by one class : <code>CrudCategory</code>.</p> <p>This class has two attributes : <code>name</code>, <code>desc</code>; respectively of type <code>CrudCategoryName</code> and <code>CrudCategoryDesc</code>.</p> <p>These classes inherit from <code>NSManagedObject</code>.</p> <p>When running the application :</p> <pre class="lang-c prettyprint-override"><code>Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Cannot build a tableView cell for object &lt;NSManagedObject: 0x6c4fb90&gt; (entity: CrudCategory; id: 0x6c4d900 &lt;x-coredata://FA7323F8-519D-4AA9-AC6E- BD30446B4C9B/CrudCategory/p210&gt; ; data: &lt;fault&gt;): No cell mapping defined for objects of type 'NSManagedObject'' </code></pre> <p>I was able to make it work by using :</p> <pre class="lang-c prettyprint-override"><code>[self.tableController mapObjectsWithClass:[NSManagedObject class] toTableCellsWithMapping:cellMapping]; </code></pre> <p>Instead of :</p> <pre class="lang-c prettyprint-override"><code>[self.tableController mapObjectsWithClass:[CrudCategory class] toTableCellsWithMapping:cellMapping]; </code></pre> <p>What I really don't get is that the exception states that there's no mapping for objects of type <code>NSManagedObject</code>, and when I use the <code>NSManagedObject</code> class instead of <code>CrudCategory</code> - which just inherits from <code>NSManagedObject</code> - everything's fine...</p> <p>Here's my environment :</p> <ul> <li>ios5 </li> <li>RestKit (last stable in github) </li> <li>ARC </li> <li>Storyboard</li> </ul> <p>If someone has an idea : )</p> <p>Thanks !</p> <p><strong>EDIT - Solved:</strong> I solved this issue in the datamodel by specifying the proper class for each entity. </p>
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