点餐系统 数据库操作
首先 对数据哭得操作
1打开数据库 引用第三方对数据哭的操作FMDB；
2分析数据库 2.1定义静态的数据库 把数据库创建到沙合下面
（open）是第三方写好的方法
static FMDatabase *_db;
//打开数据库
+(void)openDatabase{
//沙盒路径
NSString *document = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).lastObject;
//拼接
NSString *dataPath = [document stringByAppendingFormat:@"/database.sqlite"];
//文件管理
NSFileManager *manger = [NSFileManager defaultManager];
if (![manger fileExistsAtPath:dataPath])//路径不存在 执行下一步
{
//获取本地路径
NSString *path = [[NSBundle mainBundle]pathForResource:@"database" ofType:@".sqlite"];
//复制
[manger copyItemAtPath:path toPath:dataPath error:nil];
}
//创建数据库
_db = [[FMDatabase alloc]initWithPath:dataPath];
[_db open];
}
//获取主表的名字 注意是sql语句的拼写
//获取主表的名字
groupTable 表
+(NSArray *)getMainTableName:(int)groupID{
NSString *sql = [NSString stringWithFormat:@"Select name from groupTable where id = %d",groupID];
FMResultSet *set = [_db executeQuery:sql];//相当于执行sql操作
[set next];//写完操作必须写next 相当于oc的step
NSString *name = [set stringForColumn:@"name"]; 因为每条数据都是字符串 又是以“”|“”分开所以用数组接收
NSArray *nameArray = [name componentsSeparatedByString:@"|"];
[set close]; //i
return nameArray;
}
//
//获取头的每个cell的信息
+(NSArray *)getTabelHeadRowData:(NSString *)name{
NSString *sql = [NSString stringWithFormat:@"select * from menuTable where iKind = '%@'",name];
FMResultSet *set = [_db executeQuery:sql];
NSMutableArray *array = [NSMutableArray array];
while ([set next]) {
menuModel *menModel = [[menuModel alloc]init];
menModel.menuID = [set intForColumn:@"id"];
menModel.groupID = [set intForColumn:@"groupID"];
menModel.ikind = [set stringForColumn:@"iKind"];
menModel.name = [set stringForColumn:@"name"];
menModel.price = [set intForColumn:@"price"];
menModel.unit = [set stringForColumn:@"unit"];
menModel.detail = [set stringForColumn:@"detail"];
menModel.picName = [set stringForColumn:@"picName"];
[array addObject:menModel];
}
[set close];
return array;
}
//点菜
+(void)getOrderNumber:(menuModel *)model{
//先查询 在修改
NSString *sql = [NSString stringWithFormat:@"select * from orderTable where id = %d",model.menuID];
FMResultSet *set = [_db executeQuery:sql];
if ([set next]) {
//查到之后获取
int number= [set intForColumn:@"menuNum"];
NSString *updatesql = [NSString stringWithFormat:@"update orderTable set menuNum = %d where id = %d",number+1,model.menuID];
[_db executeUpdate:updatesql];
}else{
NSString *insretsql = [NSString stringWithFormat:@"insert into orderTable (id,menuName,Price,kind,menuNum,remark ) values (%d,'%@',%d,'%@',%d,'%@')",model.menuID,model.name,model.price,model.ikind,1,@"五星好评"];
NSLog(@"inser == %@",insretsql);
[_db executeUpdate:insretsql];
}
[set close];
}
//有几道菜 不是菜的个数
+(int)getOrderCount{
NSString *sql = [NSString stringWithFormat:@"select count(*) from orderTable "];
FMResultSet *set = [_db executeQuery:sql];
[set next];//zhingxing
int count = [set intForColumnIndex:0];
NSLog(@"%d",count);
[set close];
return count;
// while ([set next]) {
// <#statements#>
// }
// NSMutableArray *array =[NSMutableArray array ];
}
//删除已经选择的菜
+(void)deleteOrder:(int)orderId{
NSString *sql = [NSString stringWithFormat:@"delete from orderTable where id = %d",orderId];
[_db executeUpdate:sql];
}
//取出所有点过的菜 对象
+(NSArray *)getOrderAll{
NSString *sql = [NSString stringWithFormat:@"select * from orderTable "];
FMResultSet *set = [_db executeQuery:sql];
NSMutableArray *arr = [NSMutableArray array ];
while ([set next]) {
dainModel *orderModer = [[dainModel alloc]init];
orderModer.orderID = [set intForColumn:@"id"];
orderModer.menuNamne =[set stringForColumn:@"menuName"];
orderModer.Price = [set intForColumn:@"Price"];
orderModer.remark = [set stringForColumn:@"remark"];
orderModer.menuNum = [set intForColumn:@"menuNum"];
orderModer.Ikind = [set stringForColumn:@"kind"];
[arr addObject:orderModer];
}
[set close];
return arr;
}
//插入历史记录
+(int)insertGroup:(NSString *)date :(NSString*)time :(NSString*)room{
NSString *sql = [NSString stringWithFormat:@"insert into group_recordTable (date,time,room) values ('%@','%@','%@')",date,time,room];
[_db executeUpdate:sql];
NSString *sql2 = [NSString stringWithFormat:@"select MAX(id) from group_recordTable"];
FMResultSet *set = [_db executeQuery:sql2];
[set next];
int mun = [set intForColumnIndex:0];
[set close];
return mun;
}
//保存已经点过的菜
+(void)saveOrderModel:(int)maXID{
NSArray *array = [self getOrderAll];
for (dainModel *model in array) {
NSString *sql = [NSString stringWithFormat:@"insert into recordTable (stateNum,menuName,menuPrice,menuKind,menuNum,menuRemark,groupID) values(0,'%@',%d,'%@',%d,'%@',%d)",model.menuNamne,model.Price,model.Ikind,model.menuNum,model.remark,maXID];
[_db executeUpdate:sql];
}
NSString *sql = @"delete from orderTable";
[_db executeUpdate:sql];
}
//取出所有的历史记录
+(NSArray *)getHistoryJL{
NSString *sql = @"select * from group_recordTable";
FMResultSet *set = [_db executeQuery:sql];
NSMutableArray *array = [NSMutableArray array];
while ([set next]) {
group *model = [[group alloc] init];
model.groupID = [set intForColumn:@"id"];
model.date_str = [set stringForColumn:@"date"];
model.time_str = [set stringForColumn:@"time"];
model.room_str = [set stringForColumn:@"room"];
[array addObject:model];
}
[set close];
return array;
}
//取出对应记录的菜
+(NSArray *)getHistoryJLModel:(int)groupId{
NSString *sql = [NSString stringWithFormat:@"select * from recordTable where groupID = %d",groupId];
FMResultSet *set = [_db executeQuery:sql];
NSMutableArray *array = [NSMutableArray array];
while ([set next]) {
dainModel *model = [[dainModel alloc] init];
model.menuNamne = [set stringForColumn:@"menuName"];
model.Price = [set intForColumn:@"menuPrice"];
model.Ikind = [set stringForColumn:@"menuKind"];
model.menuNum = [set intForColumn:@"menuNum"];
model.remark = [set stringForColumn:@"menuRemark"];
[array addObject:model];
}
[set close];
return array;
}
@end