I am building a purchase order app and I have a table view that shows the current purchase order. I would like to be able to send an email with the data of that purchase order to the supplier.
I have everything working fine but I am unable to set the message body to data from firebase.
My firebase database looks like this and I would like to extract the name, info, quantity and price of each items in the list and populate the email with this data.
and this is how I am saving the data
func saveItemInBackground(shoppingItem: ShoppingItem, completion: #escaping (_ error: Error?) -> Void) {
let ref = firebase.child(kSHOPPINGITEM).child(shoppingItem.shoppingListId).childByAutoId()
shoppingItem.shoppingItemId = ref.key
ref.setValue(dictionaryFromItem(item: shoppingItem)) { (error, ref) -> Void in
completion(error)
}
}
I am using this code to present the email.
func configureMailController() -> MFMailComposeViewController {
let mailComposerVC = MFMailComposeViewController()
mailComposerVC.mailComposeDelegate = self
firebase.child(kSUPPLIEREMAIL).child(FUser.currentId()).child("SupplierEmail").observe(.value, with: {
snapshot in
if snapshot.exists() {
let toEmail = snapshot.value
mailComposerVC.setToRecipients(["\(toEmail as! String)"])
mailComposerVC.setSubject("New EDM Pro Purchase Order")
mailComposerVC.setMessageBody("", isHTML: false)
} else {
self.showMailError()
}
})
return mailComposerVC
}
and was wondering if i could user a function to set the email body and then call the function in the line mailComposerVC.setMessageBody("", isHTML: false)
Alternatively if this is not possible I could create a pdf of the tableview and attach it to the email. I am not sure how this could be done.
Any help on this would be amazing!
Related
I'm calling a Firestore query that does come back, but I need to ensure completion before moving on with the rest of the code. So I need a completion handler...but for the life of me I can't seem to code it.
// get user info from db
func getUser() async {
self.db.collection("userSetting").getDocuments() { (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
for document in querySnapshot!.documents {
let userTrust = document.data()["userTrust"] as! String
let userGrade = document.data()["userGrade"] as! String
let userDisclaimer = document.data()["userDisclaimer"] as! String
var row = [String]()
row.append(userTrust)
row.append(userGrade)
row.append(userDisclaimer)
self.userArray.append(row)
// set google firebase analytics user info
self.userTrustInfo = userTrust
self.userGradeInfo = userGrade
}
}
}
}
Called by:
internal func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
FirebaseApp.configure()
db = Firestore.firestore()
Database.database().isPersistenceEnabled = true
Task {
do {
let userInfo = await getUser()
}
} return true }
I used a Task as didFinishLauncingWithOptions is synchronous and not asynchronous
However, the getUser() still isn't completed before didFinishLauncingWithOptions moves on.
I need the data from getUser as the very next step uses the data in the array, and without it I get an 'out of bounds exception' as the array is still empty.
Also tried using dispatch group within the func getUser(). Again with no joy.
Finally tried a completion handler:
func getUser(completion: #escaping (Bool) -> Void) {
self.db.collection("userSetting").getDocuments() { (querySnapshot, err) in
if let err = err {
print("Error getting documents: \(err)")
} else {
for document in querySnapshot!.documents {
let userTrust = document.data()["userTrust"] as! String
let userGrade = document.data()["userGrade"] as! String
let userDisclaimer = document.data()["userDisclaimer"] as! String
var row = [String]()
row.append(userTrust)
row.append(userGrade)
row.append(userDisclaimer)
self.userArray.append(row)
// set google firebase analytics user info
self.userTrustInfo = userTrust
self.userGradeInfo = userGrade
completion(true)
}
}
}
}
Nothing works. The getUser call isn't completed before the code moves on. Can someone please help. I've searched multiple times, looked at all linked answers but I can not make this work.I'm clearly missing something easy, please help
read this post: Waiting for data to be loaded on app startup.
It explains why you should never wait for data before returning from
function application(_:didFinishLaunchingWithOptions).
To achieve what you need, you could use your first ViewController as a sort of splashscreen (that only shows an image or an activity indicator) and call the function getUser(completion:) in the viewDidLoad() method the ViewController.
Example:
class FirstViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
MyFirestoreDatabaseManager.shared.getUser() { success in
if success {
//TODO: Navigate to another ViewController
} else {
//TODO: Show an error
}
}
}
}
Where obviously MyFirestoreDatabaseManager.shared is the object on which you defined the getUser(completion:) method.
(In your example, I think that you defined that function in the AppDelegate. In that case, you should mark your getUser(completion:) method and all related variables as static. Then replace MyFirestoreDatabaseManager.shared with AppDelegate).
Not 100% sure what you would like to accomplish as I can't see all your code, but try something similar to this, replacing Objects for what you are trying to return from the documents.
You don't want your user's data spread across multiple documents. With Firebase you pay for every document you have to get. Ideally you want all your user's settings within one firebase document. Then create a UserInfo struct that you can decode to using the library CodeableFirebase or the decoder of your choice.
// Create user struct
struct UserInfo: Codable {
var userId: String
var userTrust: String
var userGrade: String
var userDisclaimer: String
}
// get user info from db and decode using CodableFirebase
func getUser() async throws -> UserInfo {
let doc = try await self.db.collection("users").document("userIdHere")
let userInfo = try FirestoreDecoder().decode(UserInfo.self, from: doc.data())
return UserInfo
}
Then you can do this...
Task {
do {
let userInfo = try await getUser()
let userTrust = userInfo.userTrust
let userGrade = userInfo.userGrade
let userDisclaimer = userInfo.userDisclaimer
}
}
This is my register for subscription method
public func RegisterForSubscription(completion: #escaping (Result<CKSubscription, Error>) -> Swift.Void) {
let subscription = CKQuerySubscription(recordType: Film.RecordType, predicate: NSPredicate(value: true), options: [.firesOnRecordCreation, .firesOnRecordDeletion, .firesOnRecordUpdate])
let notificationInfo = CKSubscription.NotificationInfo()
notificationInfo.shouldSendContentAvailable = true
subscription.notificationInfo = notificationInfo
database.save(subscription) { savedSubscription, error in
if let error = error {
print("Subscription error: \(error.localizedDescription)")
completion(.failure(error))
return
}
if let savedSubscription = savedSubscription {
completion(.success(savedSubscription))
return
}
}
}
Now all i care is .firesOnRecordCreation but for debugging purposes, i added all three options.
When I tried adding (save) a new record, it successfully added them to CloudKit. here's the method
public func save(film: Film, completion: #escaping (Result<CKRecord, Error>) -> Swift.Void) {
let filmRecord = film.toRecord()
let operation = CKModifyRecordsOperation(recordsToSave: [filmRecord], recordIDsToDelete: nil)
operation.qualityOfService = .userInitiated
operation.completionBlock = {
completion(.success(filmRecord))
}
database.add(operation)
}
and my .toRecord() method:
public func toRecord() -> CKRecord {
let record = self.record ?? CKRecord(recordType: Self.RecordType)
record[RecordKeys.id.rawValue] = id
record[RecordKeys.title.rawValue] = title
record[RecordKeys.filmDescription.rawValue] = filmDescription
record[RecordKeys.image.rawValue] = image
record[RecordKeys.director.rawValue] = director
record[RecordKeys.producer.rawValue] = producer
record[RecordKeys.releaseDate.rawValue] = releaseDate
record[RecordKeys.rtScore.rawValue] = rtScore
record[RecordKeys.imdbLink.rawValue] = imdbLink
record[RecordKeys.imdbScore.rawValue] = imdbScore
return record
}
Everything works. however, I wanted to register for subscription (silent notifications) to detect live changes when user add a new record (film).
The problem is, whenever i add via the method (calling the save method), it is not triggering the .firesOnRecordCreation option. However, the other two works. I updated one of the attributes via CloudKit dashboard and deleted them, it is called (on appDelegate's didReceiveRemoteNotification)
What am i doing wrong? When user added a new film from the method (not VIA dashboard) it should trigger it, but not in this case.
EDIT:
Adding via the dashboard TRIGGERS the susbcription. But NOT when using the method.
The subscription notification will not be received by the device that created, deleted or updated CKRecord.
Edit: Read here about handling subscription notifications.
You use multiple devices because a notification isn’t sent to the same device that originated the notification
I'm trying to share a record with other users in CloudKit but I keep getting an error. When I tap one of the items/records on the table I'm presented with the UICloudSharingController and I can see the iMessage app icon, but when I tap on it I get an error and the UICloudSharingController disappears, the funny thing is that even after the error I can still continue using the app.
Here is what I have.
Code
var items = [CKRecord]()
var itemName: String?
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let item = items[indexPath.row]
let share = CKShare(rootRecord: item)
if let itemName = item.object(forKey: "name") as? String {
self.itemName = item.object(forKey: "name") as? String
share[CKShareTitleKey] = "Sharing \(itemName)" as CKRecordValue?
} else {
share[CKShareTitleKey] = "" as CKRecordValue?
self.itemName = "item"
}
share[CKShareTypeKey] = "bundle.Identifier.Here" as CKRecordValue
prepareToShare(share: share, record: item)
}
private func prepareToShare(share: CKShare, record: CKRecord){
let sharingViewController = UICloudSharingController(preparationHandler: {(UICloudSharingController, handler: #escaping (CKShare?, CKContainer?, Error?) -> Void) in
let modRecordsList = CKModifyRecordsOperation(recordsToSave: [record, share], recordIDsToDelete: nil)
modRecordsList.modifyRecordsCompletionBlock = {
(record, recordID, error) in
handler(share, CKContainer.default(), error)
}
CKContainer.default().privateCloudDatabase.add(modRecordsList)
})
sharingViewController.delegate = self
sharingViewController.availablePermissions = [.allowPrivate]
self.navigationController?.present(sharingViewController, animated:true, completion:nil)
}
// Delegate Methods:
func cloudSharingControllerDidSaveShare(_ csc: UICloudSharingController) {
print("saved successfully")
}
func cloudSharingController(_ csc: UICloudSharingController, failedToSaveShareWithError error: Error) {
print("failed to save: \(error.localizedDescription)")// the error is generated in this method
}
func itemThumbnailData(for csc: UICloudSharingController) -> Data? {
return nil //You can set a hero image in your share sheet. Nil uses the default.
}
func itemTitle(for csc: UICloudSharingController) -> String? {
return self.itemName
}
ERROR
Failed to modify some records
Here is what I see...
Any idea what could be wrong?
EDIT:
By the way, the error is generated in the cloudSharingController failedToSaveShareWithError method.
Looks like you're trying to share in the default zone which isn't allowed. From the docs here
Sharing is only supported in zones with the
CKRecordZoneCapabilitySharing capability. The default zone does not
support sharing.
So you should set up a custom zone in your private database, and save your share and records there.
Possibly it is from the way you're trying to instantiate the UICloudSharingController? I cribbed my directly from the docs and it works:
let cloudSharingController = UICloudSharingController { [weak self] (controller, completion: #escaping (CKShare?, CKContainer?, Error?) -> Void) in
guard let `self` = self else {
return
}
self.share(rootRecord: rootRecord, completion: completion)
}
If that's not the problem it's something with either one or both of the records themselves. If you upload the record without trying to share it, does it work?
EDIT TO ADD:
What is the CKShareTypeKey? I don't use that in my app. Also I set my system fields differently:
share?[CKShare.SystemFieldKey.title] = "Something"
Try to add this to your info.plist
<key>CKSharingSupported</key>
<true/>
I know different variations of this question have been asked. However I seem to keep running into the same issue every time.
I want to check if an email already exist before the user pushes onto the next view. I will enter an email that exist in the database and the performSegue func is always called and pushes the user as if that email does not exist.
The only way I can check officially is when the user reaches the final sign up VC and the Auth.auth().createUser(withEmail: email as! String, password: password as! String ) { (user, error) in code will check for all errors.
However for good user experience I would hate for the user to have to click back three times to change the email address. Here is the code I have for the enter email view controller.
// Check if email is already taken
Auth.auth().fetchSignInMethods(forEmail: emailTextField.text!, completion: { (forEmail, error) in
// stop activity indicator
self.nextButton.setTitle("Continue", for: .normal)
self.activityIndicator.stopAnimating()
if let error = error {
print("Email Error: \(error.localizedDescription)")
print(error._code)
self.handleError(error)
return
} else {
print("Email is good")
self.performSegue(withIdentifier: "goToCreateUsernameVC", sender: self)
}
})
First off am I even entering the create property in the forEmail section? I added emailTextField.text because its the only way I know how even get the email the user typed. Does anyone know a better way I can do this?
How I create user accounts
This is an example of what I use. When a user provides credentials, FirebaseAuth checks if these credentials can be used to make a user account. The function returns two values, a boolean indicating whether the creation was successful, and an optional error, which is returned when the creation is unsuccessful. If the boolean returns true, we simply push to the next view controller. Otherwise, we present the error.
func createUserAcct(completion: #escaping (Bool, Error?) -> Void) {
//Try to create an account with the given credentials
Auth.auth().createUser(withEmail: emailTextField.text!, password: passwordConfirmTextField.text!) { (user, error) in
if error == nil {
//If the account is created without an error, then we will make a ProfileChangeRequest, i.e. update the user's photo and display name.
if let firebaseUser = Auth.auth().currentUser {
let changeRequest = firebaseUser.createProfileChangeRequest()
//If you have a URL for FirebaseStorage where the user has uploaded a profile picture, you'll pass the url here
changeRequest.photoURL = URL(string: "nil")
changeRequest.displayName = self.nameTextField.text!
changeRequest.commitChanges { error in
if let error = error {
// An error happened.
completion(false, error)
} else {
//If the change is committed successfully, then I create an object from the credentials. I store this object both on the FirebaseDatabase (so it is accessible by other users) and in my user defaults (so that the user doesn't have to remotely grab their own info
//Create the object
let userData = ["email" : self.emailTextField.text!,"name": self.nameTextField.text!] as [String : Any]
//Store the object in FirebaseDatabase
Database.database().reference().child("Users").child(firebaseUser.uid).updateChildvalues(userData)
//Store the object as data in my user defaults
let data = NSKeyedArchiver.archivedData(withRootObject: userData)
UserDefaults.standard.set(data, forKey: "UserData")
UserDefaults.standard.set([Data](), forKey: "UserPhotos")
completion(true, nil)
}
}
}
} else {
// An error happened.
completion(false, error)
}
}
}
Here is an example of how I would use it. We can use the success boolean returned to determine if we should push to the next view controller, or present an error alert to the user.
createUserAcct { success, error in
//Handle the success
if success {
//Instantiate nextViewController
let storyboard = UIStoryboard(name: "Main", bundle: .main)
let nextVC = storyboard.instantiateViewController(withIdentifier: "NextVC") as! NextViewController
//Push typeSelectVC
self.navigationController!.pushViewController(viewController: nextVC, animated: true, completion: {
//We are no longer doing asynchronous work, so we hide our activity indicator
self.activityIndicator.isHidden = true
self.activityIndicator.stopAnimating()
})
} else {
//We now handle the error
//We are no longer doing asynchronous work, so we hide our activity indicator
self.activityIndicator.isHidden = true
self.activityIndicator.stopAnimating()
//Create a UIAlertController with the error received as the message (ex. "A user with this email already exists.")
let alertController = UIAlertController(title: "Error", message: error!.localizedDescription, style: .alert)
let ok = UIAlertAction(title: "OK", style: .cancel, action: nil)
//Present the UIAlertController
alertController.addAction(ok)
self.present(alertController, animated: true, completion: nil)
}
}
Let me know if this all makes sense, I know there is a lot to it. I'm just considering things you'll maybe find you need done anyways that you may not be aware of (like making change requests, or storing a data object on FirebaseDatabase).
Now for checking if the email is already taken:
Remember when I said that I post a user object to FirebaseDatabase upon account creation? Well we can query for the given email to see if it already exists. If it doesn't we continue with the flow as normal, without having actually created the account. Otherwise, we simply tell the user to pick another email address.
Pushing a user object to your database (taken from the above code):
if let firebaseUser = Auth.auth().currentUser {
//Create the object
let userData = ["email" : self.emailTextField.text!,"name": self.nameTextField.text!] as [String : Any]
//Store the object in FirebaseDatabase
Database.database().reference().child("Users").child(firebaseUser.uid).updateChildvalues(userData)
}
And now querying to see if somebody already has that email:
func checkIfEmailExists(email: String, completion: #escaping (Bool) -> Void ) {
Database.database().reference().child("Users").queryOrdered(byChild: "email").queryEqual(toValue: email).observeSingleEvent(of: .value, with: {(snapshot: DataSnapshot) in
if let result = snapshot.value as? [String:[String:Any]] {
completion(true)
} else {
completion(false)
}
}
}
Then we can call this like so:
checkIfEmailExists(email: emailTextField.text!, completion: {(exists) in
if exists {
//Present error that the email is already used
} else {
//Segue to next view controller
}
})
Here is what I am trying to do. I have a simple journaling app with two views: a tableView that lists the titles of the entries and a viewController that has a text field for a title, and a textView for the text body (and a save button to save to cloudKit). On the viewController, I hit save and the record is saved to cloudKit and also added to the tableView successfully. This is all good.
I want to be able to edit/update the journal entry. But when I go back into the journal entry, change it in any way, then hit save again, the app returns to the tableView controller with an updated entry, but cloudKit creates a NEW entry separate from the one I wanted to edit. Then when I reload the app, my fetchRecords function fetches any extra records cloudKit has created.
Question: How do I edit/update an existing journal entry without creating a new entry in cloudKit?
Let me know if you need something else to further clarify my question.
Thanks!
Here are my cloudKit functions:
import Foundation
import CloudKit
class CloudKitManager {
let privateDB = CKContainer.default().publicCloudDatabase //Since this is a journaling app, we'll make it private.
func fetchRecordsWith(type: String, completion: #escaping ((_ records: [CKRecord]?, _ error: Error?) -> Void)) {
let predicate = NSPredicate(value: true) // Like saying I want everything returned to me with the recordType: type. This isn't a good idea if you have a massive app like instagram because you don't want all posts ever made to be loaded, just some from that day and from your friends or something.
let query = CKQuery(recordType: type, predicate: predicate)
privateDB.perform(query, inZoneWith: nil, completionHandler: completion) //Allows us to handle the completion in the EntryController to maintain proper MVC.
}
func save(records: [CKRecord], perRecordCompletion: ((_ record: CKRecord?, _ error: Error?) -> Void)?, completion: ((_ records: [CKRecord]?, _ error: Error?) -> Void)?) {
modify(records: records, perRecordCompletion: perRecordCompletion, completion: completion )
}
func modify(records: [CKRecord], perRecordCompletion: ((_ record: CKRecord?, _ error: Error?) -> Void)?, completion: ((_ records: [CKRecord]?, _ error: Error?) -> Void)?) {
let operation = CKModifyRecordsOperation(recordsToSave: records, recordIDsToDelete: nil)
operation.savePolicy = .ifServerRecordUnchanged //This is what updates certain changes within a record.
operation.queuePriority = .high
operation.qualityOfService = .userInteractive
operation.perRecordCompletionBlock = perRecordCompletion
operation.modifyRecordsCompletionBlock = { (records, _, error) in
completion?(records, error)
}
privateDB.add(operation) //This is what actually saves your data to the database on cloudkit. When there is an operation, you need to add it.
}
}
This is my model controller where my cloudKit functions are being used:
import Foundation
import CloudKit
let entriesWereSetNotification = Notification.Name("entriesWereSet")
class EntryController {
private static let EntriesKey = "entries"
static let shared = EntryController()
let cloudKitManager = CloudKitManager()
init() {
loadFromPersistentStorage()
}
func addEntryWith(title: String, text: String) {
let entry = Entry(title: title, text: text)
entries.append(entry)
saveToPersistentStorage()
}
func remove(entry: Entry) {
if let entryIndex = entries.index(of: entry) {
entries.remove(at: entryIndex)
}
saveToPersistentStorage()
}
func update(entry: Entry, with title: String, text: String) {
entry.title = title
entry.text = text
saveToPersistentStorage()
}
// MARK: Private
private func loadFromPersistentStorage() {
cloudKitManager.fetchRecordsWith(type: Entry.TypeKey) { (records, error) in
if let error = error {
print(error.localizedDescription)
}
guard let records = records else { return } //Make sure there are records.
let entries = records.flatMap({Entry(cloudKitRecord: $0)})
self.entries = entries //This is connected to the private(set) property "entries"
}
}
private func saveToPersistentStorage() {
let entryRecords = self.entries.map({$0.cloudKitRecord})
cloudKitManager.save(records: entryRecords, perRecordCompletion: nil) { (records, error) in
if error != nil {
print(error?.localizedDescription as Any)
return
} else {
print("Successfully saved records to cloudKit")
}
}
}
// MARK: Properties
private(set) var entries = [Entry]() {
didSet {
DispatchQueue.main.async {
NotificationCenter.default.post(name: entriesWereSetNotification, object: nil)
}
}
}
}
Here's a couple threads that might be helpful.
If you were caching the data locally you would use the encodesystemfields method to create a new CKRecord that will update an existing one on the server.
How (and when) do I use iCloud's encodeSystemFields method on CKRecord?
It doesn't appear you are caching locally. I don't have experience doing it without using encodesystemfields, but it looks like you have to pull the record down and save it back in the completion handler of the convenience method:
Trying to modify ckrecord in swift