I have an NSTableView with a checkbox column and an NSArrayController.
The NSTableView is bound to the NSArrayController to show its content.
The checkbox column is bound to imgArrayController.arrangedObjects.check1. When the program starts the array is empty. I add values using the arrayController in a loop this way:
[imgArrayController addObject:[NSDictionary dictionaryWithObjectsAndKeys:
[NSImage imageNamed: [NSString stringWithFormat:#"%#" ,fileName]], #"image",
[NSString stringWithFormat:#"%#" ,fileName], #"filename",
#"YES", #"check1",
nil]];
The correct number of rows are added, however I am getting an error when it tries to set checkbox to YES. This is the error I get:
2013-02-03 19:11:46.357 Stockuploader[561:303] Error setting value for key path check1 of object {
} (from bound object <NSTableColumn: 0x100152280> identifier: check1): [<__NSDictionaryI 0x10010c190> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key check1.
Could somebody please help me to understand what I am doing wrong? The rows appear inside the table but they are all empty.
Try using NSMutableDictionary instead of NSDictionary. Also try using [NSNumber numberWithBool: YES] instead of #"YES" (which is a string, not a boolean).
EDIT:
In a cell-based NSTableView you would need to bind the column (not the cell itself) to the arrayController with a Controller Key of arrangedObjects and a Model Key Path of check1.
In a view-based NSTableView you would need to bind the checkbox control to the Table Cell View with a Model Key Path of objectValue.check1.
Related
I've create a function below which will call when a button is pressed:
- (IBAction)setData:(id)sender{
[_myArrayController addObject:[NSMutableDictionary dictionaryWithObjectsAndKeys:
#"James", #"Name",
#"Smith",#"Surname", nil]];
}
On My NSTableView I have two columns both NSTableViewColumns have been binded to the keys above Name for the first and Surname for the second for the arrangedObjects controller key.
When I press the button a new row is created however both column fields are blank rather than saying James Smith.
Any ideas what I could be doing wrong?
Please help, this is driving me mad :(
I have a form as part of an OSX Cocoa app i'm writing which uses an NSPopUpButton to select the type of record you are creating/editing.
I am using bindings to bind the popup button to an array controller and my selected value is bound to an NSString.
I can get the popup populated and can select an item and save the record ok but there are two things I can't get right:
1) The selected value object contains the textual name of the item rather than its key - I have set Content Objects binding
2) I cannot restore the popup's selected item on reloading the form.
Here's some code samples to assist:
#implementation snippet:
IBOutlet NSPopUpButton *popMediaType;
IBOutlet NSArrayController *acMediaTypes;
#property (nonatomic, copy) NSString *selMediaType;
#interface snippet:
- (void)setupForm {
NSArray *types = [[NSArray alloc] initWithObjects:[NSDictionary dictionaryWithObjectsAndKeys:#"Video", #"name", #"video", #"value", nil],
[NSDictionary dictionaryWithObjectsAndKeys:#"Advert", #"name", #"advert", #"value", nil],
[NSDictionary dictionaryWithObjectsAndKeys:#"Graphic", #"name", #"graphic", #"value", nil],
nil];
[acMediaTypes setContent:types];
}
In interface builder:
acMediaTypes is the referencing outlet for an array controller object called mediaTypes
popMediaType is the referencing outlet for the NSPopUpButton on the form
My NSPopUpButton's bindings is configured thus:
Content (mediaTypes.arrangedObjects)
Bind to: mediaTypes
Controller Key: arrangedObjects
Model Key Path: <null>
Content Objects (mediaTypes.arrangedObjects)
Bind to: mediaTypes
Controller Key: arrangedObjects
Model Key Path: value
Content Values (mediaTypes.arrangedObjects)
Bind to: mediaTypes
Controller Key: arrangedObjects
Model Key Path: name
Selected Value (File's Owner.selMediaType)
Bind to: Files Owner
Controller key: <null>
Model Key Path: selMediaType
The popup displays correctly, shows the text from the "name" portion of the array properly.
If I read selMediaType in my code using something like NSLog() then I see "Video" for example if that item is selected - it should be "video" (lower case from the "value" part of the dictionary)
I can store the values in my sqlite database with no problems and inspect them using sqlite3 from the terminal and everything is saved.
If I load the values back from the table, I would have thought that just setting selMediatype would have reset the item position in the NSPopUpButton but it doesn't.
Solution was easy in the end but not obvious to the new players to the game.
First, your recipient variable to bind the selection to must be a property not just an iVar
Second, in the bindings, bind selected object, NOT selected value.
Binding selected value will put the displayed valued in your target variable eg "Video" but binding to selected object will put the key in your target variable eg "video".
How can i bind a NSTableViewColumn to an NSArrayController programmatically?
i have a table with 2 columns that are already bound to the array controller. but i am adding new columns at Runtime, and these need to be bound to the arrangedObjects of the arraycontroller. its a cellbased NSTableview. I only found this code online but am not able to make it work..
NSString *akey = #"somekey";
NSString *keypath = [NSString stringWithFormat:#"arrangedObjects.%#",akey];
[newColumn bind:#"value" toObject:arrayController withKeyPath:keypath options:nil];
i am not sure about the "bind:" part and did not understand the apple documentation, that says that i have to expose a binding..
Any help appreciated.
thanks
replace "value" with NSValueBinding
should work
I have a two column NSTableView that I want to populate with entries grabbed from a CSV file. Everything works fine except the title of each of the table cells isn't set.
Here's the function that is called for each row in the NSArray
- (void)populateTable:(NSString *)fname :(NSString *)lname {
NSMutableDictionary *value = [[NSMutableDictionary alloc] init];
[value setObject:[NSString stringWithFormat:#"%#", fname] forKey:#"first_name"];
[value setObject:[NSString stringWithFormat:#"%#", lname] forKey:#"last_name"];
[arrayController addObject:value];
[value release];
[fname_list reloadData];
[lname_list reloadData];
}
The value of the "last name" column is bound to the Array Controller arrangedObjects.last_name and both "first_name" and "last_name" are listed as keys in the Array Controller > Object Controller > Keys list
The proper amount of table cells are created (3 entries in the CSV file = 3 rows in each column), but the title of each of the cells isn't set (either to "first_name" or "last_name" depending on the column); the title of the cells just remains "Table View Cell"
Edit:
After using navinsillu's changes I end up with the following function:
- (void)populateTable:(id)sender :(NSString *)fname :(NSString *)lname {
[arrayController insert:sender];
[[[self arrayController] selection] setValue:fname forKeyPath:#"first_name"];
[[[self arrayController] selection] setValue:lname forKeyPath:#"last_name"];
[fname_list reloadData];
[lname_list reloadData];
}
And in my header I have
#property (retain,nonatomic,readwrite) IBOutlet NSArrayController *arrayController;
But I still get the same results: 3 rows/cells in each table column, all titled "Table View Cell"
Edit:
After some inspection I noticed that the Model Key Path under the Value bind for the table columns doesn't have any entries. When I type in first_name or last_name it says No completions found even though the keys are listed in the Keys list in the array controller. Unfortunately I have no idea as to why it isn't finding the keys.
Edit:
Odd. I tried deleting and adding the table view and array controllers but that didn't work. However, creating a new project and doing the exact same things produces the expected results.
You can set your title at the table header in Interface Builder.you can double click the table column header and set title for it.
Recreating the project exactly the same way as I had it produces what I was expecting to happen. I'm not sure why redoing it all worked, but it did.
I'm new in Cocoa. I have a table that stores Contacts. I'm not using NSTableView Protocol. I'm using Cocoa Bindings , and Mutable Array for storing in it. The question is , I want to be able to have checkbox on each row, and select contacts that I want, and be able to get selected rows. How can I do it? When I try to put Check box cell in column of Table, nothing works. Here my code how I'm filling my NSTableView for contacts. So what should be done to be able add checkboxes and handle them? Thanks.
NSMutableDictionary *dict =[NSMutableDictionary dictionaryWithObjectsAndKeys:
Name, #"Name",
Surname, #"Surname",
Education,#"Education",
nil];
//controller for binding data to NSTableView
[controllerContacts addObject:dict];
//Table for viewing data.
[viewTableOfContacts reloadData];
If you want to use checkbox at each row via bindings, you need to define a key in dict corresponding to your binding for check box.
In your case, it can be like this-
NSMutableDictionary *dict =[NSMutableDictionary dictionaryWithObjectsAndKeys:
Name, #"Name",
Surname, #"Surname",
Education,#"Education",
[NSNumber numberWithInt:0],#"selectedStudent",
nil];
Then bind that column for "selectedStudent" key.
Also if you want to retrieve only selected rows, you can use NSPredicate like this-
NSPredicate *selectedStudentPredicate = [NSPredicate predicateWithFormat:#"selectedStudent == 1"];
NSArray *selectedStudents = [controllerContacts filteredArrayUsingPredicate:selectedStudentPredicate];
Hope this helps !