MagicalRecord(简化CoreData操作)

1.新建项目不勾选coredata

2.pod 'MagicalRecord'

3.新建模型文件

4.添加实体和属性

5.Create NSManagedObject subclass

6.增

Person *person1 = [Person MR_createEntity];

person1.firstname = @"Frank";

person1.lastname = @"Zhang";

person1.age = @25;

Person *person2 = [Person MR_createEntity];

person2.firstname = @"Fra";

person2.lastname = @"ng";

person2.age = @24;

[[NSManagedObjectContext MR_defaultContext]MR_saveWithBlock:^(NSManagedObjectContext * _Nonnull localContext) {

NSLog(@"saveOK");

}];

7.查

NSArray * persons = [Person MR_findAll];

NSArray * personsSorted = [Person MR_findAllSortedBy:@"firstname" ascending:YES];

NSArray * personsAgeEuqals25 = [Person MR_findByAttribute:@"age" withValue:[NSNumber numberWithInt:25]];

Person *firstperson = [Person MR_findFirst];

8.删

Person *person = [Person MR_findAll].firstObject;

[person MR_deleteEntity];

[[NSManagedObjectContext MR_defaultContext]MR_saveWithBlock:^(NSManagedObjectContext * _Nonnull localContext) {

NSLog(@"saveOK");

}];

9.改

Person *person = [Person MR_findAll].firstObject;

person.lastname = @'"fdbsfb";

[[NSManagedObjectContext MR_defaultContext]MR_saveWithBlock:^(NSManagedObjectContext * _Nonnull localContext) {

NSLog(@"saveOK");

}];