IOS-When assigning a value to model go [self setvaluesforkeyswithdictionary:dic] do not go setvalue:forked:

This is a small pit, look at your Basemodel's handy constructor method:

+ (__kindof Basemodel *) Modelwithdic: (Nsdictionary *) dic {    return  [[ Self alloc] Initwithdic:dic];}

self must be written as self in order to invoke the SetValue method of the subclass. Do not write Basemodel.

The code in BASEMODEL.M is as follows:

-(Instancetype) Initwithdic: (Nsdictionary *) dic { self=[Super Init]; if(self) {[self setvaluesforkeyswithdictionary:dic]; }    returnSelf ;}+ (__kindof Basemodel *) Modelwithdic: (Nsdictionary *) dic {return[self alloc] initwithdic:dic];}- (void) SetValue: (ID) value Forundefinedkey: (NSString *) Key {}- (ID) Valueforundefinedkey: (NSString *) Key {returnNil;}

IOS-When assigning a model to go [self setvaluesforkeyswithdictionary:dic] setvalue:forked: