Establishing a Connection
With the CData Cmdlets users can install a data module, set the connection properties, and start scripting. This section provides examples of using our QuickBooksOnline Cmdlets with native PowerShell cmdlets, like the CSV import and export cmdlets.
Installing and Connecting
If you have PSGet, installing the cmdlets can be accomplished from the PowerShell Gallery with the following command. You can also obtain a setup from the CData site.
Install-Module QuickBooksOnlineCmdlets
The following line is then added to your profile, loading the cmdlets on the next session:
Import-Module QuickBooksOnlineCmdlets;
You can then use the Connect-QBOnline cmdlet to create a connection object that can be passed to other cmdlets:
$conn = Connect-QBOnline
Authenticating to QuickBooks Online
QuickBooks Online provides embedded OAuth credentials that simplify connection from a Desktop application or a Headless machine. To connect from a Web application, you must create a custom OAuth application, as described in Creating a Custom OAuth Application.To connect via OAuth from all authentication flows, you must set AuthScheme to OAuth.
The following subsections describe how to authenticate to QuickBooks Online from:
- Desktop: a connection to a server on the user's local machine, frequently used for testing and prototyping. Authenticated via either embedded OAuth or custom OAuth.
- Web: access to data via a shared website. Authenticated via custom OAuth only.
- Headless Server: a dedicated computer that provides services to other computers and their users, which is configured to operate without a monitor and keyboard. Authenticated via embedded OAuth or custom OAuth.
For information about how to create a custom OAuth application, and why you might want to create one even for auth flows that already have embedded OAuth credentials, see Creating a Custom OAuth Application.
For a complete list of connection string properties available in QuickBooks Online, see Connection.
Desktop Applications
CData provides an embedded OAuth application that simplifies authentication at the desktop. You can also authenticate from the desktop via a custom OAuth application, which you configure and register at the QuickBooks Online console. For further information, see Creating a Custom OAuth Application.Before you connect, set these properties:
- InitiateOAuth: GETANDREFRESH. Used to automatically get and refresh the OAuthAccessToken.
- Custom OAuth applications only:
- OAuthClientId: The client Id assigned when you registered your custom OAuth application.
- OAuthClientSecret: The client secret assigned when you registered your custom OAuth application.
- CallbackURL: The redirect URI defined when you registered your custom OAuth application.
When you connect, the cmdlet opens QuickBooks Online's OAuth endpoint in your default browser. Log in and grant permissions to the application.
When the access token expires, the cmdlet refreshes it automatically.
Automatic refresh of the OAuth access token:
To have the cmdlet automatically refresh the OAuth access token, do the following:
- The first time you connect to data, set these connection parameters:
- InitiateOAuth: REFRESH.
- OAuthClientId: The client Id in your custom OAuth application settings.
- OAuthClientSecret: The client secret in your custom OAuth application settings.
- OAuthAccessToken: The access token returned by GetOAuthAccessToken.
- OAuthSettingsLocation: The path where you want the cmdlet to save the OAuth values, which persist across connections.
- On subsequent data connections, set:
- InitiateOAuth
- OAuthSettingsLocation
Manual refresh of the OAuth access token:
The only value needed to manually refresh the OAUth access token is the OAuth refresh token.
- To manually refresh the OAuthAccessToken after the ExpiresIn period (returned by GetOAuthAccessToken) has elapsed, call the RefreshOAuthAccessToken stored procedure.
- Set these connection properties:
- OAuthClientId: The Client Id in your custom OAuth application settings.
- OAuthClientSecret: The Client Secret in your custom OAuth application settings.
- Call RefreshOAuthAccessToken with OAuthRefreshToken set to the OAuth refresh token returned by GetOAuthAccessToken.
- After the new tokens have been retrieved, set the OAuthAccessToken property to the value returned by RefreshOAuthAccessToken. This opens a new connection.
Store the OAuth refresh token so that you can use it to manually refresh the OAuth access token after it has expired.
Headless Machines
If you need to log in to a resource that resides on a headless machine, you must authenticate on another device that has an internet browser. You can do this in either of the following ways:
- Option 1: Obtain the OAuthVerifier value.
- Option 2: Install the cmdlet on a machine with an internet browser and transfer the OAuth authentication values after you authenticate through the usual browser-based flow.
After you execute either Option 1 or Option 2, configure the driver to automatically refresh the access token on the headless machine.
Option 1: Obtaining and Exchanging a Verifier Code
To obtain a verifier code, you must authenticate at the OAuth authorization URL as follows:
-
Authenticate from the machine with an internet browser, and obtain the OAuthVerifier connection property.
If you are using the embedded OAuth application, call the GetOAuthAuthorizationURL stored procedure. Open the URL returned by the stored procedure in a browser.
If you are using a custom OAuth application, set these properties:
- InitiateOAuth: OFF.
- OAuthClientId: The client Id assigned when you registered your application.
- OAuthClientSecret: The client secret assigned when you registered your application.
-
Call the GetOAuthAuthorizationURL stored procedure. The stored procedure returns the CallbackURL established when the custom OAuth application was registered. (See Creating a Custom OAuth Application.)
Copy this URL and paste it into a new browser tab.
-
Log in and grant permissions to the cmdlet. The OAuth application redirects you the redirect URI, with a parameter called code appended. Note the value of this parameter; you will need it later, to configure the OAuthVerifier connection property.
-
Exchange the OAuth verifier code for OAuth refresh and access tokens. On the headless machine, to obtain the OAuthAccessToken, set these connection properties:
- InitiateOAuth: REFRESH.
- OAuthVerifier: The noted verifier code (the value of the code parameter in the redirect URI).
- OAuthSettingsLocation: persist the encrypted OAuth authentication values to the specified file.
- Custom OAuth applications only:
- OAuthClientId: The client Id in your custom OAuth application settings.
- OAuthClientSecret: The client secret in the custom OAuth application settings.
-
Test the connection to generate the OAuth settings file.
-
You are ready connect after you re-set these properties:
- InitiateOAuth: REFRESH.
- OAuthSettingsLocation: The file containing the encrypted OAuth authentication values. To enable the automatic refreshing of the access token, be sure that this file gives read and write permissions to the cmdlet.
- Custom OAuth applications only:
- OAuthClientId: The client Id assigned when you registered your application.
- OAuthClientSecret: The client secret assigned when you registered your application.
Option 2: Transferring OAuth Settings
Prior to connecting on a headless machine, you must install and create a connection with the driver on a device that supports an internet browser. Set the connection properties as described above in "Desktop Applications".
After completing the instructions in "Desktop Applications", the resulting authentication values are encrypted and written to the path specified by OAuthSettingsLocation. The default filename is OAuthSettings.txt.
Test the connection to generate the OAuth settings file, then copy the OAuth settings file to your headless machine.
To connect to data via the headless machine, set these connection properties:
- InitiateOAuth: REFRESH
- OAuthSettingsLocation: The path to the OAuth settings file you copied from the machine with the browser. To enable automatic refreshing of the access token, ensure that this file gives read and write permissions to the cmdlet.
- Custom OAuth applications only:
- OAuthClientId: The client Id assigned when you registered your custom OAuth application.
- OAuthClientSecret: The client secret assigned when you registered your custom OAuth application.
Retrieving Data
The Select-QBOnline cmdlet provides a native PowerShell interface for retrieving data:
$results = Select-QBOnline -Connection $conn -Table "Customers" -Columns @("Id, GivenName") -Where "GivenName='Cook, Brian'"The Invoke-QBOnline cmdlet provides an SQL interface. This cmdlet can be used to execute an SQL query via the Query parameter.
Piping Cmdlet Output
The cmdlets return row objects to the pipeline one row at a time. The following line exports results to a CSV file:
Select-QBOnline -Connection $conn -Table Customers -Where "GivenName = 'Cook, Brian'" | Select -Property * -ExcludeProperty Connection,Table,Columns | Export-Csv -Path c:\myCustomersData.csv -NoTypeInformation
You will notice that we piped the results from Select-QBOnline into a Select-Object cmdlet and excluded some properties before piping them into an Export-CSV cmdlet. We do this because the CData Cmdlets append Connection, Table, and Columns information onto each row object in the result set, and we do not necessarily want that information in our CSV file.
However, this makes it easy to pipe the output of one cmdlet to another. The following is an example of converting a result set to JSON:
PS C:\> $conn = Connect-QBOnline PS C:\> $row = Select-QBOnline -Connection $conn -Table "Customers" -Columns (Id, GivenName) -Where "GivenName = 'Cook, Brian'" | select -first 1 PS C:\> $row | ConvertTo-Json { "Connection": { }, "Table": "Customers", "Columns": [ ], "Id": "MyId", "GivenName": "MyGivenName" }
Deleting Data
The following line deletes any records that match the criteria:
Select-QBOnline -Connection $conn -Table Customers -Where "GivenName = 'Cook, Brian'" | Remove-QBOnline
Modifying Data
The cmdlets make data transformation easy as well as data cleansing. The following example loads data from a CSV file into QuickBooks Online, checking first whether a record already exists and needs to be updated instead of inserted.
Import-Csv -Path C:\MyCustomersUpdates.csv | %{ $record = Select-QBOnline -Connection $conn -Table Customers -Where ("Id = `'"+$_.Id+"`'") if($record){ Update-QBOnline -Connection $conn -Table Customers -Columns @("Id","GivenName") -Values @($_.Id, $_.GivenName) -Where "Id = `'$_.Id`'" }else{ Add-QBOnline -Connection $conn -Table Customers -Columns @("Id","GivenName") -Values @($_.Id, $_.GivenName) } }