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| It's easy to save and read record based data on Dropbox using AppStudio using Dropbox Datastores. You can then access them on all your devices and on your desktop.
| | '''Important: DropBox [https://blogs.dropbox.com/developers/2015/04/deprecating-the-sync-and-datastore-apis/ announced on April 23, 2015] that this API is deprecated and will be phased out by April, 2016.''' |
| * Apps must be set up in Dropbox before they will run.
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| * Apps need to be deployed. They cannot run locally.
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| * You can only run someone else's app if you have their permission.
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| * Therefore you can only access someone else's files with their permission.
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| * If you want to access files directly, use [[Using Dropbox to save files|Dropbox Files]].
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| * Maximum datastore size is 10 megs.
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| * Maximum records per datastore is 100,000.
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| * Maximum record size is 100k.
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| * The first 5 megs do not subtract from your Dropbox allocation.
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| Here's how:
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| == Get a DropBox account. ==
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| Use your existing account or get a new one. They're free and easy to set up.
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| == Create your app in the Dropbox App Console ==
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| Go to [https://www.dropbox.com/developers/apps Dropbox App Console] and create a Dropbox API app, that does "Datastores only".
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| [[File:Dropboxappconsole3.png|600px|none]]
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| === Settings ===
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| [[File:Dropboxappconsole1.png|600px|none]]
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| Settings Fields:
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| * Status: Development allows up to 100 users. To apply for Production, your app will have to approved by Dropbox.
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| * Development users: Who is allowed to use the app?
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| * Permission type: Normally, read and write to its own folder.
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| * App Folder Name: Name the folder you want to use in Dropbox/Apps for your app's files. If it does not exist, it will be created.
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| * App key, App secret: Generated by Dropbox. Use App key in your app to identify the Dropbox app.
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| * OAuth redirect URIs: The complete URL to your deployed app, including index.html.
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| * Drop-ins domains: Not needed.
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| * Datastores: Not needed.
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| === Details ===
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| [[File:Dropboxappconsole2.png|500px|none]]
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| Details Fields:
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| * App name: The name of your app. Don't use "Dropbox" in the name.
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| * Publisher: Your name or the name of your company.
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| * Description: A description of your app.
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| * App website: The main website for your app.
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| * App icons: 64x64 and 256x256 images. You need to save them to your Dropbox before uploading them.
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| == Write your app ==
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| === Add the Dropbox library to your project ===
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| Select Global Code and Project Properties in the Project Explorer, and add the Dropbox library to the project:
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| [[File:Dropboxlibrary.png|600px|none]]
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| === Log into Dropbox ===
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| Security is important to Dropbox apps. Before you can do anything, you need to login. Dropbox uses a security schema call [http://en.wikipedia.org/wiki/OAuth OAuth], which is fairly ease to use.
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| Here is what you do at the start of your app:
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| <pre>
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| Dim APP_KEY = "qx65sf9nruudj73"
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| Dim client = new Dropbox.Client({key: APP_KEY})
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| client.authenticate({interactive:False}, authenticationError)
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| Function authenticationError(err)
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| If err Then MsgBox "DropBox Authentication error: " & err
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| End Function
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| </pre>
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| Once this is done, you can check to see if the user is authorized. If not, you need to authenticate:
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| <pre>
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| client.authenticate()
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| </pre>
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| This will load the Dropbox web page, ask the user to log in if needed and get authorization for the app.
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| === Initialize your Table ===
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| Once authenticated, you need open the datastore for the app.
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| <pre>
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| datastoreManager = client.getDatastoreManager()
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| datastoreManager.openDefaultDatastore(openDataStoreComplete)
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| Function openDataStoreComplete(err, datastore)
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| If err Then
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| MsgBox "Error opening datastore: " & err
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| Else
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| studentTable=datastore.getTable("students")
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| End If
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| End Function
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| </pre>
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| * This app uses only the default datastore.
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| * It has one table called studentTable.
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| * A datastore can have multiple tables.
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| * getTable() returns the table.
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| * A table is created when records are added to it.
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| === Read a file from your DropBox ===
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| Reading is as easy as writing.
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| <pre>
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| client.readFile("MyData.txt", {}, readComplete)
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| Function readComplete(err, data)
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| MsgBox "Data read: " & data
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| End Function
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| </pre>
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| * The file will be read in /DropBox/Apps/yourAppName
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| * If the file exists, it is overwritten by default.
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| * JSON is a nice format to use for structured data. Use JSON.Stringify and JSON.Parse.
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| * readFile executes asynchronously.
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| * The last parameter is the function to call on completion of write.
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| * An error code and the data is passed to the readComplete function.
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| * If operation is successful, null is passed as err.
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| * There are additional options for data type, start position and number of bytes to read.
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| === Other Dropbox file commands ===
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| Here is the full list of calls that can be made to the Dropbox client. Docs are [https://www.dropbox.com/developers/datastore/docs/js here].
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| * signOut(options, callback)
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| * getAccountInfo(options, callback)
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| * readFile(path, options, callback)
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| * writeFile(path, data, options, callback)
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| * resumableUploadStep(data, cursor, callback)
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| * resumableUploadFinish(path, options, callback)
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| * stat(path, options, callback)
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| * readdir(path, options, callback)
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| * makeUrl(path, options, callback)
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| * history(path, options, callback)
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| * readThumbnail(path, options, callback)
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| * revertFile(path, versionTag, callback)
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| * findByName(path, namePattern, options, callback)
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| * makeCopyReference(path, callback)
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| * pullChanges(cursor, callback)
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| * mkdir(path, callback)
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| * remove(path, callback)
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| * copy(from, toPath, callback)
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| * move(fromPath, toPath, callback)
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| * appInfo(appKey, callback)
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| * isAppDeveloper(userId, appKey, callback)
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| * hasOauthRedirectUri(redirectUri, appKey, callback)
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