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");

    }];