ios - Get all records from core data and get string with one attribute from every record (MagicalRecord) -

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i'm try elements user saved inside app(this easy), 1 attribute every record , have these attributes listed inside string(that's problem). how can it? wrote don't think right way. me please!

 -(nsstring*)getallrecords {     nsarray* arra = [newitem mr_findallsortedby:@"data" ascending:yes];     newitem* ctn = arra.;// have not idea      return [nsstring stringwithformat:@"%@", [arra componentsjoinedbystring:@", "]];  }

if understand problem correctly, should want:

nsarray *elements = [newitem mr_findallsortedby:@"data" ascending:yes]; nsarray *attributes = [elements valueforkey:@"attributename"]; return [nsstring stringwithformat:@"%@", [attributes componentsjoinedbystring:@", "]];

applying valueforkey:key array returns array containing results of invoking valueforkey:key on each of array's objects.


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