Y26-136 - [BUG] submissions#show (ActionView::Template::Error) "undefined method 'template_name' for nil"

[neilsycamore]

Error message in body is

An ActionView::Template::Error occurred in submissions#show:

  undefined method 'template_name' for nil
  app/models/submission.rb:130:in 'Submission#scrna_core_cdna_prep_gem_x_5p_submission?'

When building a submissions using /submissions/new there is an option to ‘delete order’ when making a submission.. as in ‘oh I’ve made an error and added the wrong plate barcode’.
However once the order has been deleted the page reverts back to /submissions/new and the previous submission is left in ‘limbo’ in the database forever in a state of ‘building’ and without any orders.

And it is the absence of an order that triggers the ActionView::Template::Error

1. https://training.sequencescape.psd.sanger.ac.uk/submissions/new
2. select template <General: Cherrypick>
3. plate identifier: ISC
4. select "+Add Order"
   Study and Project
5. Study: "Dummy EGA accession study"
6. Project Name: "test BAC"
7. Add Samples => "From Plate and Wells" tab
   training env. stock plate example would be 'DN501776L'
8. Comments: 'something'
9. Save order
10. At this point select "Delete Order"

Deletes order... however the page goes back to https://training.sequencescape.psd.sanger.ac.uk/submissions/new

Outcome

The submission (on which the order has been deleted) should not be created/built.
The submission has not been built so should not transition from pending to building.