Installation

NTYPopulator is available through CocoaPods, to install it simply add the following line to your Podfile:

platform :ios
pod "NTYPopulator"

Usage

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [[NTYPopulator new] run];
    return YES;
}

-init method initializes an instance with the URL of Model.momd and $(CFBundleName).sqlite. You can also specify these URLs by -initWithModelURL:sqliteURL:.

-run method populates seed data at seeds/*.csv at the application resource bundle. The filename is used to look up an entity name. For example, seed data at seeds/user.csv is populated into User entity. You can also specify the URL of seed data by -runWithSeedFileURL:.

Efficiency

The populator stores the modification date of each seed files on NSUserDefaults. It checks whether each seed files have changes, and then populates only data on changed seed files.

Safety

By default, when the populator populates data, it will delete all data and insert again. So, data inserted after populating will be also deleted.

In order to keep these data, you should add a column seed_id. This column values identify which row should be updated, inserted or deleted.

seed_id,name,age
1,Alice,18
2,Bob,19
3,Charlie,20