On 17 Oct 2009, at 00:46, Charles Srstka wrote:
On Oct 16, 2009, at 5:42 PM, Ian Piper wrote:
The Text View is simply used as a place for the user to put any
rich text and or images. Is there a way either to search or to get
all of the plain text out from such a Text View? It's probably a
simplistic question and I rather suspect that ultimately the answer
is no!
As others have already said, you can get the plain text by just
sending the -string message to the NSTextStorage object.
Charles
Yes - I had read the other comments. However I am not sure that I am
communicating the problem effectively here. I don't think I have an
NSTextStorage object. I am trying to build a search predicate binding
in the Bindings Inspector. I seem to be able to add predicates like
this (to enable filtering of entities containing a String attribute
called entryName):
entryName contains[c] $value
This works fine and so my find panel finds records in my database that
have appropriate text in those attributes. The problem comes with
another attribute called entryContent. This is expressed in the user
interface as an NSTextView and displays content stored in an NSData
attribute. I am trying to understand whether there is a
filterpredicate format like the one above that I can add to enable
finding records that contain the specified text in that entryContent
attribute. I have tried things like
entryContent contains[c] $value
but this renders the find box useless.
It seems to me that the filterPredicates that you build in IB's
Inspector are referring to the attributes in the data model rather
than the objects in the user interface, so I suppose I need to
understand how you get text data out of an NSData attribute using a
filterPredicate.
Failing that, a colleague has suggested to me that I could create a
new Managed Object, write a custom accessor method to get out the text
and then use that method in the filterpredicate definition. That is
where I have been trying to understand how to get a string object out
of the NSData attribute. When I create a custom Managed Object class I
see these in the .h and .m files respectively:
@property (nonatomic, retain) NSData * entryContent;
@dynamic entryContent;
However I don't seem to be able to get at the string content of
entryContent.
I'm sure I am complicating this unduly, but if someone could just
spell this out I'd be grateful. I have looked with increasing
bafflement at the Developer Documentation.
Regards,
Ian.
--
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