Parse: 5 tricks that won YC Hacks
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The document summarizes key features and capabilities of the Parse mobile backend as a service (mBaaS) platform, including storing and querying data via PFObjects, user authentication and social integration, push notifications, and analytics tracking. It provides code examples for common tasks like saving and fetching data, signing up and logging in users, and sending push notifications.
![Storing Data
Parse Data
PFObject is like an NSMutableDictionary in the cloud
PFObject *armor = [PFObject objectWithClassName:@“Armor”];
[armor setObject:@“Shield” forKey:@“name”];
armor[@“price”] = @50;
[armor saveInBackground];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-8-320.jpg)
![Storing Data
Parse Data
!
Armor
*shield
=
[Armor
object]
shield.name
=
@“shield”;
shield.cost
=
50;
Can also use like a class:](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-9-320.jpg)
![Fetching Data
Parse Data
PFQuery
*query
=
[Armor
query];
[query
whereKey:@“name”
equalTo:@“shield”];
[query
whereKey:@“cost”
lessThan:@50];
[query
findObjectsInBackgroundWithBlock:
^(NSArray
*objects,
NSError
*error)
{
/*
...
*/
}];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-10-320.jpg)
![Signing Up
Parse Social
PFUser
*user
=
[PFUser
user];
user.username
=
@“inlined”;
user.password
=
@“YC
H4cks”;
[user
signUpInBackgroundWithBlock:
^(BOOL
success,
NSError
*error)
{
/*
...
*/
}];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-11-320.jpg)
![Social Integration
Parse Social
[PFFacebookUtils
logInWithPermissions:nil
block:
^(PFUser
*user,
NSError
*error)
{
/*
...
*/
}];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-12-320.jpg)
![Registering
Parse Push
[PFPush
storeDeviceToken:deviceToken];
[PFPush
subscribeToChannelInBackground:@“hack”];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-17-320.jpg)
![Sending
Parse Push
PFPush
*push
=
[PFPush
push];
push.channel
=
@“hack”;
push.message
=
@“Move
fast
and
build
things”;
[push
sendInBackgroundWithBlock:
^(BOOL
succeeded,
NSError
*error)
{
/*
...
*/
}];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-18-320.jpg)
![App Opens
Parse Analytics
[PFAnalytics
trackAppOpenedWithLaunchOptions:launchOptions];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-20-320.jpg)
![Custom Events
Parse Analytics
NSDictionary
*dimensions
=
@{
@“product”:
@“pwnies”,
@“location”:
@“US-‐west”,
@“login”:
@“Facebook”,
};
[PFAnalytics
trackEvent:@“purchase”
dimensions:dimensions];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-21-320.jpg)
![Access Control
Parse Social
//
Automatically
own
all
objects
you
create
but
//
allow
everyone
to
read
them.
PFACL
*acl
=
[PFACL
ACL];
[acl
setPublicReadAccess:YES];
[PFACL
setDefaultACL:acl
withAccessForCurrentUser:YES]](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-26-320.jpg)
![Logging In
Parse Social
PFUser
*user
=
[PFUser
logInWithUsername:@“inlined”
password:@“YC
H4cks”];
//
From
now
on:
PFUser
*user
=
[PFUser
currentUser];](https://image.slidesharecdn.com/ychacks-140802172640-phpapp02/85/Parse-5-tricks-that-won-YC-Hacks-27-320.jpg)
Parse: 5 tricks that won YC Hacks
- 2. Which is better: To expend great effort Or achieve great results?
- 3. Making mobile apps is hard
- 4. Database REST API Z Z Z Server ++ + users + security CachingNetworking + + The fun part! no no no no no yes!
- 7. Parse Core
- 8. Storing Data Parse Data PFObject is like an NSMutableDictionary in the cloud PFObject *armor = [PFObject objectWithClassName:@“Armor”]; [armor setObject:@“Shield” forKey:@“name”]; armor[@“price”] = @50; [armor saveInBackground];
- 9. Storing Data Parse Data ! Armor *shield = [Armor object] shield.name = @“shield”; shield.cost = 50; Can also use like a class:
- 10. Fetching Data Parse Data PFQuery *query = [Armor query]; [query whereKey:@“name” equalTo:@“shield”]; [query whereKey:@“cost” lessThan:@50]; [query findObjectsInBackgroundWithBlock: ^(NSArray *objects, NSError *error) { /* ... */ }];
- 11. Signing Up Parse Social PFUser *user = [PFUser user]; user.username = @“inlined”; user.password = @“YC H4cks”; [user signUpInBackgroundWithBlock: ^(BOOL success, NSError *error) { /* ... */ }];
- 12. Social Integration Parse Social [PFFacebookUtils logInWithPermissions:nil block: ^(PFUser *user, NSError *error) { /* ... */ }];
- 13. UI Controls Parse Social Replace login code with built-in view controllers Fully customizable
- 14. Parse Cloud Code For when server-side code is needed or easier Trusted execution environment Data pipeline integration Third party integration Hosting static and dynamic resources
- 15. Parse Cloud Code Parse.Cloud.afterSave( “Message”, function(request) { Parse.Push.send({ channel: request.object.get(“room”), data: { alert: request.object.get(“message”) } }); });
- 16. Parse Push
- 17. Registering Parse Push [PFPush storeDeviceToken:deviceToken]; [PFPush subscribeToChannelInBackground:@“hack”];
- 18. Sending Parse Push PFPush *push = [PFPush push]; push.channel = @“hack”; push.message = @“Move fast and build things”; [push sendInBackgroundWithBlock: ^(BOOL succeeded, NSError *error) { /* ... */ }];
- 19. Parse Analytics
- 20. App Opens Parse Analytics [PFAnalytics trackAppOpenedWithLaunchOptions:launchOptions];
- 21. Custom Events Parse Analytics NSDictionary *dimensions = @{ @“product”: @“pwnies”, @“location”: @“US-‐west”, @“login”: @“Facebook”, }; [PFAnalytics trackEvent:@“purchase” dimensions:dimensions];
- 25. Backup
- 26. Access Control Parse Social // Automatically own all objects you create but // allow everyone to read them. PFACL *acl = [PFACL ACL]; [acl setPublicReadAccess:YES]; [PFACL setDefaultACL:acl withAccessForCurrentUser:YES]
- 27. Logging In Parse Social PFUser *user = [PFUser logInWithUsername:@“inlined” password:@“YC H4cks”]; // From now on: PFUser *user = [PFUser currentUser];
- 28. Storing Data Parse Data Can also use like a class: @interface Armor : PFObject<PFSubclassing> // Properties are synthesized with @dynamic @property (nonatomic) NSString *name; @property (nonatomic) int price; @end