ActiveAdmin deletes associations when simply trying to render show page

Question

Here's the show.html.arb file:

attributes_table_for resource do
  row :id
  row :state
  row :request_type
  row :assignee
  row :assigner
  row :unassigned
  row :deleter
end

attributes_table_for resource.request do
  row :id
end

And here's the ActiveAdmin.register Request part:

show do |resource|
  render 'show'
end

Here's the link that is used to render this page:

<%= content_tag(:li, link_to('View', accounting_request_path(accnt_request))) %>

My question then is, why on earth does this tell me it's trying to remove the association??

This is a GET request, not a PUT or POST request.

Here's the exact error:

Failed to remove the existing associated request. The record failed to save when after its foreign key was set to nil.

It is, indeed, removing the association when I simply view the show page for this record.

found the issue... thanks for reminding me to look at the logs and not just the error message. Bah! I'll share what the issue was. — Nick Res, Jul 18 '17 at 13:15

score 0 · Accepted Answer · answered Jul 18 '17 at 13:24

The question doesn't show this - but one of the models as an after_initialize callback declared within it.

The logs tell me that this method is being called here where it says build_requestable:

app/models/concerns/requestable.rb:6:in `build_requestable'
app/views/accounting_requests/_show.html.arb:6:in `block in _app_views_accounting_requests__show_html_arb___512970926778810589_70108054037800'
app/views/accounting_requests/_show.html.arb:1:in `new'
app/views/accounting_requests/_show.html.arb:1:in `_app_views_accounting_requests__show_html_arb___512970926778810589_70108054037800'
app/ui/stewgle/tasks/accounting_requests.rb:33:in `block (2 levels) in <top (required)>'
lib/monkies/aa_views_pages_base.rb:62:in `block in build_page_content'
lib/monkies/aa_views_pages_base.rb:60:in `build_page_content'
app/controllers/application_controller.rb:57:in `set_time_zone'

Now, here's what the documentation says about this callback:

Lastly an after_find and after_initialize callback is triggered for each object that is found and instantiated by a finder, with after_initialize being triggered after new objects are instantiated as well.

This means that just by doing ar_object_thingy.associated_thingy it's calling the after_initialize callback. Within that callback I'm doing self.build_thingy (example) to create an object within a polymorphic relationship. This is actually destroying the current relationship that's there with an un-persisted object which is causing the error.

TLDR;

The issue isn't with ActiveRecord in this case. It's with a model callback I'm using called after initialize that is calling a method which breaks the belongs_to relationship this model validates the presence of every time I simply look up the parent record's child through the parent.

ActiveAdmin deletes associations when simply trying to render show page

1 Answers1