问题描述
- iOS 数据库第二。三张表不能插入数据,第一张可以,为什么
-
- (id)init
{
self = [super init];
if (self) {NSArray * arr = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); _filePath = [arr objectAtIndex:0]; _filePath = [_filePath stringByAppendingPathComponent:@"Test.db"]; NSLog(@"filePath is %@",_filePath); _dataBase = [FMDatabase databaseWithPath:_filePath]; if (![_dataBase open]) { NSLog(@"can not open dataBase!"); return nil; } NSArray *array=[NSArray arrayWithObjects: @"CREATE TABLE if not exists student (Num integer PRIMARY KEY AUTOINCREMENT,studentNumber text,studentName text,studentAddress text)", @"CREATE TABLE if not exists course (b integer PRIMARY KEY AUTOINCREMENT,courseNumber text,courseName text,courseTeacher text)", @"CREATE TABLE if not exists score (a integer PRIMARY KEY AUTOINCREMENT,studentNumber text,courseName text,score text)", nil]; for (NSString * sql in array) { [_dataBase executeUpdate:sql]; }
}
return self;
} - (BOOL)insertDataToDataBase:(id)model andKey:(NSInteger)key;
{if ([model isKindOfClass:[StedentModel class]]) {
StedentModel *sModel = (StedentModel *)model; return [_dataBase executeUpdate:@"INSERT INTO student (Num,studentNumber,studentName,studentAddress) VALUES (?,?,?,?)",[NSNumber numberWithInt:key],sModel.studentNumber,sModel.studentName,sModel.studentAddress];
}
if ([model isKindOfClass:[CourseModel class]]){CourseModel *cModel = (CourseModel *)model; return [_dataBase executeUpdate:@"INSERT INTO course (b,courseNumber,courseName,courseTeacher,) VALUES (?,?,?,?)",[NSNumber numberWithInt:key],cModel.courseNumber,cModel.courseName,cModel.courseTeacher];
}
if ([model isKindOfClass:[ScoreModel class]]){ScoreModel *sModel = (ScoreModel *)model; return [_dataBase executeUpdate:@"INSERT INTO score (a,studentNumber,courseName,score,) VALUES (?,?,?,?)",[NSNumber numberWithInt:key],sModel.studentNumber,sModel.courseName,sModel.score];
}else{
return YES;
}
}
Nicholas 09:59:47- (IBAction)saveButtonPressed:(UIButton *)sender {
StedentModel *stuModel = [[StedentModel alloc]init];
CourseModel *couModel = [[CourseModel alloc]init];
ScoreModel *scoModel = [[ScoreModel alloc]init];stuModel.studentNumber = _sNumberTextField.text;
stuModel.studentName = _sNameTextField.text;
stuModel.studentAddress = _sAddressTextField.text;couModel.courseNumber = _cNumberTextField.text;
couModel.courseName = _cName.text;
couModel.courseTeacher = _cTeacherTextField.text;scoModel.studentNumber = _scoreNumberTextField.text;
scoModel.courseName = _scoreNameTextField.text;
scoModel.score = _scoreTextField.text;DateBaseSimple *dateBase = [DateBaseSimple sharedDataBase];
[dateBase insertDataToDataBase:couModel andKey:4];
[dateBase insertDataToDataBase:scoModel andKey:4];
[dateBase insertDataToDataBase:stuModel andKey:4];
}
- (id)init