I''ve inherited a legacy rails project (1.2x), running on multiple hosts behind a load balancer, and I''m occasionally seeing 500 errors when trying to create a nested activescaffold form. AS is trying to insert null into the foreign key to the parent. I''ve compared the ajax requests on a failed case and a successful call, and they''re both the same, so I''m validating that the same codebase is running on each machine, etc. However, I can''t tell how active scaffold is supposed to be passing through the foreign key to the parent row, which is making tracking down this bug a bit more difficult. The generated form has inputs that correspond to the nested object''s values, as well as the following values on the form tag (I''ve converted names of the parent-child relationships to a department-employee model -- the actual names are different): <form onsubmit="new Ajax.Request(''/employee/create? eid=ecbf45f1bd5efadb38c4c2d4b10a1cae&nested=true&parent_column=employees&parent_model=Department'', { asynchronous:true, evalScripts:true, onComplete:function(request){$(''employee-create-loading- indicator'').style.visibility = ''hidden''; Form.enable(''employee-create-- form'');}, onFailure:function(request) {ActiveScaffold.report_500_response(''employee-active-scaffold'')}, parameters:Form.serialize(this)}); $(''employee-create-loading-indicator'').style.visibility = ''visible''; Form.disable(''employee-create--form'');; return false;" method="post" id="employee-create--form" href="/employee/create? eid=ecbf45f1bd5efadb38c4c2d4b10a1cae&nested=true&parent_column=employees&parent_model=Department" class="create" action="/employee/create? eid=ecbf45f1bd5efadb38c4c2d4b10a1cae&amp;nested=true&amp;parent_column=employees&amp;parent_model=Department"> So a few questions: 1) Where in the HTML does activescaffold store the link to the parent object? Is it related to the EID somehow? I assumed that the EID is simply how activescaffold is making the ajax call uniquely identified, and has no relationship to the parent row id... 2) Has anyone experienced non-deterministic errors with activescaffold and ajax similar to this? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.