AHA!!!
I do not know exactly why, but I discovered via judicious debugger
usage that @project was no longer valid during the ajax update of my
table-plus. However, "this" was the current project. So, it now
appears to be updating correctly, having changed the context line for
my table-plus from
<table-plus with="&@project.project_custodians" ...
to
<table-plus with="&this.project_custodians" ...
Now, on to further testing.
On Jul 10, 2:54 pm, Montgomery Kosma <[email protected]> wrote:
> Seems this should not be so hard, but let me ask a simpler question:
>
> In all the various hobo ajax examples, controller code typically says
> something like this:
>
> this.attributes = params[:project] || {}
> hobo_ajax_response if request.xhr?
>
> What is the purpose & function of the first of these two lines?
>
> On Jul 9, 2:21 am, Montgomery Kosma <[email protected]> wrote:
>
> > Trying a new, simpler approach to try to get my app working -- have to
> > complete v1.0 asap, or cancel the project. To dodge my formlet
> > troubles, I created a new show_action to add and delete
> > ProjectCustodian (join table) associations, including:
>
> > 1. a form with custodian name autocompleter and submit button
> > 2. a table-plus, wrapped in a part, showing total number and list of
> > custodians
>
> > Almost everything works. But when add update="my-foo-part" to submit
> > (to get the table and total to update) or update="total-custodians" to
> > delete-button (just to update the count) I get a nasty pop-up dialog
> > showing a bunch of html and an error message.
>
> > My only thought is maybe I need to update @project_custodians somehow?
>
> > Here's the controller code:
>
> > show_action :editcustodians do
> > @project = find_instance
> > order = parse_sort_param("custodian.name", "custodian.type",
> > "custodian.last_name")
> > @project_custodians =
> > @project.project_custodians.custodian_names_like(params
> > [:search]).sort_custodians_by(order)
> > this.attributes = params[:project] || {}
> > hobo_ajax_response if request.xhr?
> > end
>
> > And the dryml:
>
> > <show-page>
> > <collection: replace>
> > <form with="&ProjectCustodian.new" reset-form refocus-form
> > update="my-foo-part">
> > <% this.project_id = @project.id -%>
> > <name-one:custodian complete-target="&@project"
> > completer="new_custodian_name" />
> > <submit label="Add Custodian" />
> > </form>
>
> > <div part="my-foo-part">
> > <table-plus with="&@project_custodians" fields="custodian.name,
> > custodian.custodian_type, custodian.last_name">
> > <prepend-header:>
> > <div part="total-custodians">
> > <p class="subform-count">There <count prefix="are"/><%= "
> > matching *#{params[:search]}*" unless params[:search].blank? %> </p>
> > </div>
> > </prepend-header:>
> > <empty-message:>No custodians have been added to this
> > project.</empty-message:>
> > <controls:>
> > <delete-button class="ui-icon ui-icon-circle-close"
> > update="total-custodians"/>
> > </controls:>
> > </table-plus>
> > </div>
> > </collection:>
> > </show-page>
>
> > And the error from the log after hitting delete:
>
> > NoMethodError (You have a nil object when you didn't expect it!
> > You might have expected an instance of Array.
> > The error occurred while evaluating nil.split):
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/part_context.rb:112:in
> > `parse_this_id'
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/part_context.rb:90:in
> > `unmarshal'
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/part_context.rb:49:in
> > `for_refresh'
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/part_context.rb:55:in
> > `initialize'
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/part_context.rb:48:in `new'
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/part_context.rb:48:in
> > `for_refresh'
> > vendor/plugins/hobo/hobo/lib/hobo/dryml/template_environment.rb:
> > 166:in `refresh_part'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:90:in
> > `ajax_update_response'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:85:in `each'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:85:in
> > `ajax_update_response'
> > vendor/plugins/hobo/hobo/lib/hobo/model_controller.rb:758:in
> > `render'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:83:in
> > `ajax_update_response'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:71:in
> > `hobo_ajax_response'
> > vendor/plugins/hobo/hobo/lib/hobo/model_controller.rb:613:in
> > `destroy_response'
> > vendor/plugins/hobo/hobo/lib/hobo/model_controller.rb:611:in
> > `destroy_response'
> > vendor/plugins/hobo/hobo/lib/hobo/model_controller.rb:605:in
> > `hobo_destroy'
> > vendor/plugins/hobo/hobo/lib/hobo/model_controller.rb:157:in
> > `destroy'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:22:in `call'
> > vendor/plugins/hobo/hobo/lib/hobo/controller.rb:22:in
> > `included_in_class'
>
> > Rendered rescues/_trace (240.0ms)
> > Rendered rescues/_request_and_response (5.0ms)
> > Rendering rescues/layout (internal_server_error)
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