Undefined local variable or method form while updating tasks from admin panel

[nickskalkin]

Steps to reproduce:

1. Login as admin
2. Tasks -> Edit
3. Clear Md body field (so task will be not valid)
4. Click on Update button

NameError: undefined local variable or method `form' for #<Hanami::View::Rendering::Scope:0x007fcd04857d60> Did you mean? format form_for fork

/Users/nikita/.rvm/gems/ruby-2.3.0@ossboard/gems/hanami-view-1.0.0/lib/hanami/view/rendering/layout_scope.rb:221:in `method_missing'
/Users/nikita/.rvm/gems/ruby-2.3.0@ossboard/gems/hanami-view-1.0.0/lib/hanami/view/rendering/scope.rb:73:in `method_missing'
/Users/nikita/Projects/ossboard/apps/admin/templates/tasks/edit.html.slim:3:in `block in singleton class'

[nickskalkin]

As I can see, this behaviour spreads all over across admin panel, at least at /admin/users/ , /admin/tasks

[davydovanton]

thanks for report! could you try to solve this bug?

[nickskalkin]

sure

[nickskalkin]

I've done temporary fix, there is no 500 more, but we should decide how to handle fields that not passed validation. Should I show flash with errors on top of the page or highlight every field, like Simple Form does?
Also, I'm a bit stuck, may be you can advice me something and I will not spent extra time looking for a solution. The point is that when we update tasks/users in Update action, if operation is not successful we remain in the Update action, so we need method form in Update view. But the form will be 90% the same as in the Edit view. So where should I extract this method?