Introduction to Parse backend for mobile developers
Download as PPTX, PDF2 likes1,175 views
The document highlights Parse, a mobile development platform founded in June 2011 and acquired by Facebook in April 2013, which provides backend services for app development, including data storage and user management. It covers various features such as object models, queries, user authentication, social integration, and cloud code functionality. The document also discusses UI components and analytics, offering resources for developers navigating Parse's documentation and APIs.
![Object Model
PFObject - unstructured key-value data object
PFObject *book = [PFObject objectWithClassName:@”Book”];
book[@”title”] = @”The Little Prince”;
[book saveInBackground];
...
int pages = [[book objectForKey:@”pages”] intValue];
NSString *objectId = hotel.objectId;
NSDate *createdAt = hotel.createdAt; (updatedAt)
...
[book saveEventually];](https://image.slidesharecdn.com/fx11nc98tircanc4bxjq-signature-b6a4066fd9606c6c84b393c856bbd79f9f66e90a9d7f0cc4eac72976e18adb27-poli-141014132953-conversion-gate01/85/Introduction-to-Parse-backend-for-mobile-developers-9-320.jpg)
![Queries
PFQuery *query = [PFQuery queryWithClassName:@”Book”];
[query getObjectInBackgroundWithId:@”xWMyZ4YEGZ” block:^(PFObject *book,
NSError *error) {
NSLog(@”%@”, book);
}
…
[query whereKey:@”author” equalTo:@”Jack London”];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error)
{…}]
…
query.limit = 5; query.skip = 10;
[query orderByAscending:@”title”];
[query selectKeys:@[@”title”, @”pages”];](https://image.slidesharecdn.com/fx11nc98tircanc4bxjq-signature-b6a4066fd9606c6c84b393c856bbd79f9f66e90a9d7f0cc4eac72976e18adb27-poli-141014132953-conversion-gate01/85/Introduction-to-Parse-backend-for-mobile-developers-10-320.jpg)
![Relational Queries
PFQuery *query = [PFQuery queryWithClassName:@”Comment”];
[query whereKey:@”book” equalTo:theBook];
…
PFQuery *innerQuery = [PFQuery queryWithClassName:@”Book”];
[innerQuery whereKeyExists:@”image”];
PFQuery *query = [PFQuery queryWithClassName:@”Comment”];
[query whereKey:@”book” matchesQuery:innerQuery];
…
query.cachePolicy = kPFCachePolicyNetworkElseCache;
[query includeKey:@”author”];
…
PFQuery *query = [PFQuery orQueryWithSubqueries:@[queryA, queryB]];](https://image.slidesharecdn.com/fx11nc98tircanc4bxjq-signature-b6a4066fd9606c6c84b393c856bbd79f9f66e90a9d7f0cc4eac72976e18adb27-poli-141014132953-conversion-gate01/85/Introduction-to-Parse-backend-for-mobile-developers-11-320.jpg)
![Files and Images
NSData *data = UIImagePNGRepresentation(image); // (up to 10MB)
PFFile *file = [PFFile filwWithName:@”attachment.png” data:data];
[file saveInBackground];
…
PFObject *message = [PFObject objectWithClassName:@”Message”];
message[@”attatchment”] = file;
[message saveInBackground];
…
PFFile *imageFile = article[@”imageFile”];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
UIImage *image = [UIImage imageWithData:data];
}];](https://image.slidesharecdn.com/fx11nc98tircanc4bxjq-signature-b6a4066fd9606c6c84b393c856bbd79f9f66e90a9d7f0cc4eac72976e18adb27-poli-141014132953-conversion-gate01/85/Introduction-to-Parse-backend-for-mobile-developers-12-320.jpg)
![Users
PFUser - user subclass of PFObject
PFUser *user = [PFUser user];
user.username = @“myname”; // required
user.password = @”mypass”; // required on signup
user.email = @”email@example.com”; // optional
[user signUpInBackgroundWithBlock:^(BOOL succeeded, NSError *error){...}];
[PFUser logInUsernameInBackground@”myname” password:@”mypass”
block:^(PFUser *user, NSError *error) {...}];
PFUser *currentUser = [PFUser currentUser];
[PFUser logOut];
[PFUser requestPasswordRequestForEmailInBackground:@”email@example.com”];](https://image.slidesharecdn.com/fx11nc98tircanc4bxjq-signature-b6a4066fd9606c6c84b393c856bbd79f9f66e90a9d7f0cc4eac72976e18adb27-poli-141014132953-conversion-gate01/85/Introduction-to-Parse-backend-for-mobile-developers-13-320.jpg)
![Cloud Code
● Custom code on server
● Command line tool (parse new, deploy)
Parse.Cloud.define(“hello”, function(request, response) {
response.success(“hello world”); // 15 sec limit
});
[PFCloud callFunctionInBackground:@”hello” withParameters:@{}
block:^(NSString *results, NSError *error) {...}
}];
Parse.Cloud.beforeSave(“Book”, …); // 3 sec limit
Parse.Cloud.afterDelete(Parse.User, …);](https://image.slidesharecdn.com/fx11nc98tircanc4bxjq-signature-b6a4066fd9606c6c84b393c856bbd79f9f66e90a9d7f0cc4eac72976e18adb27-poli-141014132953-conversion-gate01/85/Introduction-to-Parse-backend-for-mobile-developers-15-320.jpg)
Introduction to Parse backend for mobile developers
- 1. Writing Parse Apps Armenian Dev Meetup
- 3. Why Parse? ● Learning curve ● Documentation ● Examples ● Support
- 4. Parse ● Platform for mobile developers ● Founded Jun 2011, YC ● Acquired by Facebook, Apr 2013 ● Built on Amazon Web Services
- 6. Products
- 7. Client SDKs
- 8. Quickstart
- 9. Object Model PFObject - unstructured key-value data object PFObject *book = [PFObject objectWithClassName:@”Book”]; book[@”title”] = @”The Little Prince”; [book saveInBackground]; ... int pages = [[book objectForKey:@”pages”] intValue]; NSString *objectId = hotel.objectId; NSDate *createdAt = hotel.createdAt; (updatedAt) ... [book saveEventually];
- 10. Queries PFQuery *query = [PFQuery queryWithClassName:@”Book”]; [query getObjectInBackgroundWithId:@”xWMyZ4YEGZ” block:^(PFObject *book, NSError *error) { NSLog(@”%@”, book); } … [query whereKey:@”author” equalTo:@”Jack London”]; [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {…}] … query.limit = 5; query.skip = 10; [query orderByAscending:@”title”]; [query selectKeys:@[@”title”, @”pages”];
- 11. Relational Queries PFQuery *query = [PFQuery queryWithClassName:@”Comment”]; [query whereKey:@”book” equalTo:theBook]; … PFQuery *innerQuery = [PFQuery queryWithClassName:@”Book”]; [innerQuery whereKeyExists:@”image”]; PFQuery *query = [PFQuery queryWithClassName:@”Comment”]; [query whereKey:@”book” matchesQuery:innerQuery]; … query.cachePolicy = kPFCachePolicyNetworkElseCache; [query includeKey:@”author”]; … PFQuery *query = [PFQuery orQueryWithSubqueries:@[queryA, queryB]];
- 12. Files and Images NSData *data = UIImagePNGRepresentation(image); // (up to 10MB) PFFile *file = [PFFile filwWithName:@”attachment.png” data:data]; [file saveInBackground]; … PFObject *message = [PFObject objectWithClassName:@”Message”]; message[@”attatchment”] = file; [message saveInBackground]; … PFFile *imageFile = article[@”imageFile”]; [imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) { if (!error) { UIImage *image = [UIImage imageWithData:data]; }];
- 13. Users PFUser - user subclass of PFObject PFUser *user = [PFUser user]; user.username = @“myname”; // required user.password = @”mypass”; // required on signup user.email = @”[email protected]”; // optional [user signUpInBackgroundWithBlock:^(BOOL succeeded, NSError *error){...}]; [PFUser logInUsernameInBackground@”myname” password:@”mypass” block:^(PFUser *user, NSError *error) {...}]; PFUser *currentUser = [PFUser currentUser]; [PFUser logOut]; [PFUser requestPasswordRequestForEmailInBackground:@”[email protected]”];
- 14. Social Integrations ● Facebook and Twitter ● Login & Signup ● Link & unlinking existing users ● API calls
- 15. Cloud Code ● Custom code on server ● Command line tool (parse new, deploy) Parse.Cloud.define(“hello”, function(request, response) { response.success(“hello world”); // 15 sec limit }); [PFCloud callFunctionInBackground:@”hello” withParameters:@{} block:^(NSString *results, NSError *error) {...} }]; Parse.Cloud.beforeSave(“Book”, …); // 3 sec limit Parse.Cloud.afterDelete(Parse.User, …);
- 16. UI Components ● PFLoginViewController ● PFSignUpViewController ● PFQueryTableViewController ● PFImageView ● PFTableCellView
- 17. Data Browser
- 18. Analytics
- 19. Pricing
- 20. Recommendations ● Prototyping ● Wrap Parse API ● Development vs. Production ● ACL ● Cloud Code
- 21. Q&A Thanks!