objective c - when adding a relationship object w/ core data get "property cannot be found in forward class object" error -


i have core data model 4 entities. entity player has to-many relationship other entities (player_scores,custom_exercise,selected_exercise).

in app delegate, make nsmanagedobjectcontext,nsmanagedobjectmodel,nspersistentstorecoordinator properties in standard way. then, in different view controller, declare ivars nsmanagedobjectcontext object , newplayer player entity in @interface:

@interface newprofileviewcontroller() {     nsmanagedobjectcontext *context;     player *newplayer; }

then in action have following code create player entity , enter in attributes, player_scores entity , selected_exercise entity. code use adds attributes player_scores , player entities. when try add 16 selected_exercise entities in loop , set attributes big fat "property cannot found on forward class object?" error. help!!!!! said code same selected_exercise , player_scores. tried re-starting, deleting database, etc. it's compiler error pops when try newex.exercise=@"blahblahblah"; or newex.suit=@"blahblahblah"; ugh

below code method:

     //1. save person database         newplayer=[nsentitydescription                            insertnewobjectforentityforname:@"player"                            inmanagedobjectcontext:context];          newplayer.name=newentry;         //nserror *error; [context save:&error];          //2. begin making score card:         player_scores *newscorecard = [nsentitydescription                                insertnewobjectforentityforname:@"player_scores"                                inmanagedobjectcontext:context];          newscorecard.date_of_game = [nsdate date];         newscorecard.player=newplayer; //attach score card new playe         [newplayer addscoresobject:newscorecard];//add score card newplayer         //3.  make selected_exercise          nsstring *plistcatpath = [[nsbundle mainbundle] pathforresource:@"listofexercises" oftype:@"plist"]; //grab plist         nsmutablearray* thedictarray= [[nsmutablearray arraywithcontentsoffile:plistcatpath] copy];          for(int cnt=0;cnt<[thedictarray count];cnt++){              selected_exercise *newex= [nsentitydescription                                        insertnewobjectforentityforname:@"selected_exercise"                                        inmanagedobjectcontext:context];             newex.exercise=[[thedictarray objectatindex:cnt]valueforkey:@"exercise"];             newex.suit=[[thedictarray objectatindex:cnt]valueforkey:@"suit"];             [newplayer addselected_exerciseobject:newex];             nslog(@"added exercise %@ suit %@ @ array index %d",[[thedictarray objectatindex:cnt]valueforkey:@"exercise"],[[thedictarray objectatindex:cnt]valueforkey:@"suit"],cnt);         }     // save     nserror *error = nil;     if ([context save:&error]) {         nslog(@"the save successful!");     } else {         nslog(@"the save wasn't successful: %@", [error userinfo]);     }

that sounds if imported "player.h", not "selected_exercise.h" in file.

"player.h" contains forward declaration @class selected_exercise, compiler not complain on

selected_exercise *newex = [nsentitydescription ...

but if "selected_exercise.h" not imported, properties of class, such newex.exercise, unknown compiler.


Comments

Post a Comment

Popular posts from this blog

Why does Ruby on Rails generate add a blank line to the end of a file? -

running rails generate controller foo home results in: class foocontroller < application controller def home end end (there's nothing on line in actual file, blank line) is there purpose blank line? it's common use newline indicate end of line, last line. many editors (like vi, use) add in newline silently. consensus text files (especially in unix world) should end in newline, , there have been problems historically if wasn't present. why should text files end newline? the tool used count lines in file "wc" counts newlines in file, without trailing newline show 3 instead of 4. it improves readability of templates used in generator. consider: https://github.com/rails/rails/blob/master/railties/lib/rails/generators/rails/controller/templates/controller.rb to remove trailing newline, template have last line of: end<% end -%> instead of: end <% end -%> that seems less readable me. the discussion below refers
Read more

keyboard - Smiles and long press feature in Android -

i've created android keyboard. how add features inserting smilies, , using long keypresses display symbols? to create long-press behavior allows select several options pop-up menu, follow guide (specifically pop-up menu section): http://developer.android.com/guide/topics/ui/menus.html smileys (also known emoticons) combination of keys, understood programs , parsed same way. have do, when clicks smiley face on keyboard, simulate pressing of key combination matching emoticon. example, when clicks smiley, should simulate key presses ':' , ')' :). here's list of emoticons: http://en.wikipedia.org/wiki/list_of_emoticons
Read more

node.js - Bad Request - node js ajax post -

i'm using express 3.0 , node v0.11.0. have button submits form , i'm using ajax post data json object node server. client code is: $('#contact').submit(function(e) { console.log('submit called'); var formdata = json.stringify($('form').serializeobject()); console.log(formdata); $.ajax({ url: "http://localhost:3000/savedata/", type: "post", datatype: 'json', data: {objectdata: formdata}, contenttype: "application/json", complete: function() { console.log('process complete'); }, success: function(data) { console.log('process sucess'); }, error: function() { console.log('process error'); }, }); return false; }); then on server: var express = require('express'); var app = express(); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.bodyparser());
Read more