I'm making a document-based application, backed by core data, but I'm having
serious issues opening the documents again.
I'm trying to use readFromFileWrapper(wrapper, ofType:type, error:err) in an
NSDocument subclass.
Through my logging, it seems that this method is doing what it should, but the
document that is displayed is not the object that I query inside that method,
as can be seen by the two calls to "puts self" in the snippets below.
def readFromFileWrapper(wrapper, ofType:type, error:err)
url =
NSURL.fileURLWithPath(self.fileName).URLByAppendingPathComponent("test.storedata")
setFileType('SQLite')
add_persistent_store(url)
puts crags # This is a method that fetches objects from the sqlite database,
# and proves to me that the database has been set right. Output
below:
# #<RFCrag_RFCrag_:0x4013323c0>
# #<RFCrag_RFCrag_:0x4013324c0>
# #<RFCrag_RFCrag_:0x401332680>
# #<RFCrag_RFCrag_:0x401334480>
# #<RFCrag_RFCrag_:0x401334740>
# #<RFCrag_RFCrag_:0x4013355c0>
# #<RFCrag_RFCrag_:0x40132f980>
# #<RFCrag_RFCrag_:0x40132fc80>
puts self # => #<RFDocument:0x40161bfe0> # Correct I think, this is what I
expect
true
end
This one is called from a "button_press(sender)" method once the opened
document is on-screen, but the tableview is not populated. I would expect this
to be an RFDocument also.
def button_press(sender)
puts self # => #<#<Class:0x40049db20>:0x4013e7680> # Incorrect? Or some
funny cocoa-generated subclass maybe?
end
I don't know what this object is, but it doesn't have the persistent store set.
Although I can then set it by calling a method from a menu that calls the
"add_persistent_store(url)" method, and make the document window display the
data.
Am I missing something? I've been banging my head against this one for hours
now. Any help is greatly appreciated.
--
Stephen Horne
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