Databases
StackOverflow2013
Postsdbo
POHow to create an action from selecting a row from an NSTableView
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to create an action from selecting a row from an NSTableView
    primarykey
    data
    text
    <p>When I select a row from <code>NSTableView</code>, it is not running the code from <code>tableViewSelectionDidChange</code> method. I had put break points in this method and it is not even going into the method.</p> <p>Any ideas? Am I missing something in my initialiser?</p> <p><strong>PersonController.h</strong></p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface Person : NSObject { IBOutlet NSTableView *personsTable; NSMutableArray *personsList; NSMutableArray *personCollection; IBOutlet NSTextField *selectedPersonName; IBOutlet NSTextField *selectedPersonGender; @private } - (void)tableViewSelectionDidChange:(NSNotification *)aNotification; @end </code></pre> <p><strong>PersonController.m</strong></p> <pre><code>#import "PersonController.h" #import "Person.h" @implementation PersonController - (id)init { self = [super init]; if (self) { personsList = [[NSMutableArray alloc] init]; Person *person = [[Person alloc] init]; // Create person 1 person.name = @"Bob"; person.gender = @"male"; // Append to array [personsList addObject:person]; [person release]; // Create person 2 person = [[Person alloc] init]; person.name = @"Fred"; person.gender = @"Unknown"; // Append to array [personsList addObject:person]; [person release]; [personsTable reloadData]; } return self; } - (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView { return [personsList count]; } - (id)tableView:(NSTableView *)tableView objectValueForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row { Person *person = [personsList objectAtIndex:row]; NSString *identifier = [tableColumn identifier]; return [person valueForKey:identifier]; } - (void)tableViewSelectionDidChange:(NSNotification *)aNotification { NSInteger selectedRow = [personsTable selectedRow]; if (selectedRow == -1) { // these should be localized, but use string constants here for clarity [selectedPersonName setStringValue:@"No selection"]; [selectedPersonGender setStringValue:@"No selection"]; } else { Person *selectedPerson = [personCollection objectAtIndex:selectedRow]; [selectedPersonName setStringValue:[selectedPerson name]]; [selectedPersonGender setStringValue:[selectedPerson gender]]; } } - (void)dealloc { [super dealloc]; } @end </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCoderama
    1. USCoderama
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POHow to create an action from selecting a row from an NSTableView
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POHow to create an action from selecting a row from an NSTableView
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow to create an action from selecting a row from an NSTableView
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI believe tableViewSelectionDidChange was not being called, because you had not set your NSTableView's delegate.
      singulars
      1. POHow to create an action from selecting a row from an NSTableView
      1. USJay Haase
 

Querying!

 
Guidance
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.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

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.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload