World is now on Opti ID! Learn more

fredriktjarnberg
Jun 15, 2009
  4793
(0 votes)

Module Installation – Dealing with Regrets

If you’re an above average, EPiServer module installer developer you might have experienced writing a custom wizard for retrieving data. When doing so you take on a responsibility to handle cancellation, not only for your own script but for any script that is calling you (“install site with sql database” being one). This is easy to forget… I know from personal experience. The good news is that it is very easy to handle the event of user regrets (canceling your wizard) and here’s how":

In your PS script when calling the Show method on the wizard you need to get capture the return value.

$proceedWithInstall = $wizard.Show()

In order to terminate any active installer transactions you then need to look at the return value and if it’s false, you simply throw an exception to cause active transactions to rollback
 
if ($proceedWithInstall -eq $false)
{
throw(New-Object ApplicationException("User cancelled the installation"))
}

Not doing the above will make the surrounding script (Install site…) complete as if nothing happened.
Jun 15, 2009

Comments

Please login to comment.
Latest blogs
Make Global Assets Site- and Language-Aware at Indexing Time

I had a support case the other day with a question around search on global assets on a multisite. This is the result of that investigation. This co...

dada | Jun 26, 2025

The remote server returned an error: (400) Bad Request – when configuring Azure Storage for an older Optimizely CMS site

How to fix a strange issue that occurred when I moved editor-uploaded files for some old Optimizely CMS 11 solutions to Azure Storage.

Tomas Hensrud Gulla | Jun 26, 2025 |

Enable Opal AI for your Optimizely products

Learn how to enable Opal AI, and meet your infinite workforce.

Tomas Hensrud Gulla | Jun 25, 2025 |

Deploying to Optimizely Frontend Hosting: A Practical Guide

Optimizely Frontend Hosting is a cloud-based solution for deploying headless frontend applications - currently supporting only Next.js projects. It...

Szymon Uryga | Jun 25, 2025

World on Opti ID

We're excited to announce that world.optimizely.com is now integrated with Opti ID! What does this mean for you? New Users:  You can now log in wit...

Patrick Lam | Jun 22, 2025

Avoid Scandinavian Letters in File Names in Optimizely CMS

Discover how Scandinavian letters in file names can break media in Optimizely CMS—and learn a simple code fix to automatically sanitize uploads for...

Henning Sjørbotten | Jun 19, 2025 |