Validator

-(bool)validateInput {
    // Not a word
    if ([self numberOfWordsInString:self.wordToAdd] > 1) {
        return false;
    } else {
        NSString *query = [NSString stringWithFormat:@"SELECT * FROM WordsWrong WHERE word=%@", self.wordToAdd];
        [self.dbManager executeQuery:query];
        if (self.dbManager.affectedRows != 0) {
            // Word exists
            return false;
        } else {
            // Valid Word
            return true;
        }
    }
}