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    <p>A view becomes modal when it is displayed using presentModalViewController:animated. You can pass along the model to be edited before presenting the modal view.</p> <pre><code>DetailViewController dvc = ...; dvc.model = model; dvc.delegate = self; // if you want to use a delegate pattern. [self presentModalViewController:dvc animated:YES]; </code></pre> <p>Since the model you want to edit is available in the modal view controller you can set the values in viewDidLoad. There is no databinding available on the iOS platform which means you have to updated the view and your model manually.</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; self.someTextField.text = self.model.someText; } </code></pre> <p>What you need to consider when working with a modal view is that you must provide a way to dismiss it. E.g. by having a navigation bar on top with Cancel and Save buttons. Dismissing a modal view controller is done using:</p> <pre><code>[self dismissModalViewControllerAnimated:YES]; </code></pre> <p>It is possible to dismiss the modal view from within the modal view controller but that also means that such a modal controller must be able to save the model in question. I would personally use a callback to the presenting controller letting it know wether to save or cancel as well as handling the dismissing of the modal view. This can be done using a delegate pattern. So when the user taps Save you can update the model and then notify the delegate.</p> <pre><code>- (IBAction)save:(id)sender { self.model.someText = self.someTextField.text; [self.delegate detailViewControllerDidSave:self]; } </code></pre> <p>And in the presenter have a method like:</p> <pre><code>-(void)detailViewControllerDidSave:(DetailViewController *)controller { // save the model [self dismissModalViewControllerAnimated:YES]; } </code></pre>
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    1. USRobert Höglund
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    1. COHi Robert, Thanks. So is there anything special about the detailViewController so that when it's displayed modally fields become editable?
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    2. COYou're welcome. I don't think there is any automatic way of doing that. A UIViewController have an editing property that can be used to toggle an editable state via setEditing:animated:. If you want to use the same DetailViewController for display and editing you can call [dvc setEditing:YES animated:NO] after the call to presentModalViewController:animated:. Then you have to implement setEditing:animated: in DetailViewController and update the appropriate controls, like self.someTextField.enabled = edit.
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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