core data - Tinkering under the hood with Bindings in Xcode -

-

Take two core data entities, install the following types:

unit A: car < / P> 

  Properties: Year Model Relationships: Manufacturer (<<> -> Producer)

Unit B: Manufacturer

Now, what I want to do is display a display NSTableView < / Code> where we model the car in a column, then be followed by the manufacturer Education is, after year. Model binding and the year is not a problem, but if I bind a column in the table, then I get a relation fault error in each cell in that column, whatever I am looking for. How can I play with the compulsion to display the appropriate manufacturer name associated with the car?

The question is going a bit further, how can I set another table view car entries with the Creator relationship Ask for display,

There is a bit more information about how to set it up It will be helpful, you can tie your arrows in the same way as if your other qualities, the same binding and destined With the key key Simply use the full key path manufacturer.name for the model key path.

For more than one relationship, you use two array controllers to prepare your content from your original data creator class (in entity mode) To set the 'master' array controller. After that, you create a secondary, 'expansion' array controller. Leave the array controller in the class mode (with the default NSMutableDictionary class), and tie your contents in your Master Arter Controller, which will be select The path of the model for the car .

There are so many tutorials that actually do this. I highly recommend walking through one or two; I found particularly helpful, the whole series is great.


Comments

Post a Comment

Popular posts from this blog

c# - How to capture HTTP packet with SharpPcap -

-
I would like to capture all incoming HTTP packets on my machine. To do this, I am using SharpPcap which is a WinPcap The cover is. SharpPcap works very well, but it captures TCP packets and what it wants to do for me is a very low level. Does anyone know how can I easily get full HTTP requests / reactions from all these TCP packets? Thanks SharpPcap is already able to capture the packet in the same way That's what the virus does (just in the code instead of the GUI). And you can either either parse them directly or you can put them in the drive in the common .pcap file format. The steps to parse the capture are: Open a connection at any time Loop a while Or start capturing using an event callback Parsing the raw packet for the type you want If you are reading .PPP dump files In addition to calling you an offline capture reader is almost the same, there is no need to select an interface, and you can set the majority There is no need to do the modes. All st...
Read more

php - Multiple Select with Explode: only returns the word "Array" -

-
By using Wordpress I have created a multiple selection box so that users can select categories to exclude. When the page is initially loaded, I see my predefined default option. However, when I select a new value and I save ... I only see the word "Array" and have not chosen anything else? & lt; Class = "amultiple" id = "& lt; php echo $ value ['id'] ;? gt;" name = "& gt; php echo $ value ['id'] ;; gt; []" Multiple = "multiple" size = "8" & gt; & Lt ;? Php global option; Foreign currency ($ value as value $) {if (get_settings ($ value ['id']) === FALSE {$$ value ['id'] = $ value ['std']; } And {$$ value ['id'] = get_settings ($ value ['id']); }} $ Ranges = & amp; Amp; Categories ('type = post & orderbiz = name & amp; hide_empty = 1'); If ($ ranges) {$ ex_cat = implode (',', $ tt_cat_exclude); Forex Currency ($ range a...
Read more

php - jQuery AJAX Post not working -

-
I do not understand why this script does not work. It has something to do within AJAX PostScript / Function. Right now, when I submit my form, it runs php code on the same page. What it should do, send the values ​​of the form for Project_Azax.fp, then there will be a refund of success on the page which is correct or false. $ (document) .ready (function () {$ ('div # didIt'). Hide (); $ ('form [name = adminForm]'). Submit (function () ($ {'.post' ('/ project_ajax.php', {action: $ ('[name = action]') Val (), pId: $ ('[name = pId]'). Val (), name ('[Name = name]'. Val (), url: $ ('[url = url]'). Val (), summary: ('[summary = summary]'). Val ()}, Function (data) {if (data.success) {$ ('div # didIt') .Sliddown ('slow');} and {warning ('unsuccessful SA!');}}, 'Jason'); return false ;});}); What is the code for project_ajax.php below ... if ($ _ POST ['action'] == ...
Read more