fields_for is a devil to understand, with and without a parent/data form.
You need to really study the Rails documentation a lot, create scenarios
from your data.... Before you try fields_for you should test at 'rails
console' for certainty that your associations are productive. Be certain
of your data before testing because association testing in true null/empty
is pretty nondescript... If you are bold, go to GitHub, and search to Rails
applications and then fields_for....
Best to you.
Liz
PS: Write to Colin Law, he is a wealth of information regarding tutorials...
On Sunday, August 2, 2015 at 7:15:48 PM UTC-4, Bazley wrote:
>
> You were right, it looks like it's active_comment_relationship is nil, I
> think. I added the yaml line and got this:
>
> --- !ruby/hash:ActionController::Parameters
>
> utf8: ✓
>
> authenticity_token:
> nNWNdGOzKSu5gfDkB4x3AFIO1PQnIggn65uE//SGQNzK8Ub5AOtsShH3CLZd+oU7ic9WlA+F0RbsSVR6X1I78w==
>
> callsign: bazzer
>
> notice: !ruby/hash:ActionController::Parameters
>
> latitude: '51.75253980933651'
>
> longitude: '-1.39801025390625'
>
> content: Hello everyone
>
> commit: Drop
>
> controller: notices
>
> action: create
>
> Completed 500 Internal Server Error in 31ms (ActiveRecord: 7.1ms)
>
> NoMethodError (undefined method `[]' for nil:NilClass):
>
>
> I have updated my code to use a form builder. It's all working great
> except for this one problem. The code is below. For some reason the
> fields_for is not working - as the params above shows there should be an
> active_comment_relationship parameter for notice but it isn't present.
> What's wrong with this code?:
>
>
> <%= form_for(:notice, url: :notices, method: :post, html: { multipart:
> true, class: "comment_form" } ) do |f| %>
> <%= hidden_field_tag :callsign, @character.callsign %>
> <%= f.fields_for :active_comment_relationship do |ff| %>
> <%= ff.label :commentee_id %>
> <%= ff.hidden_field :commentee_id, value: notice.id %>
> <% end %>
> <%= f.hidden_field :latitude, value: notice.latitude, id:
> "comment_notice_latitude" %>
> <%= f.hidden_field :longitude, value: notice.longitude, id:
> "comment_notice_longitude" %>
> <%= f.text_area :content, rows: 1, id: "commentField-#{notice.id}",
> class: "comment_area" %>
> <%= f.submit( "Post", class: 'btn btn-default btn-xs',
> onclick: "return validateCommentForm('#commentField-#{
> notice.id}');" ) do %>
> <span class="glyphicon glyphicon-ok" aria-hidden="true"></span>
> <% end %>
> <%= f.file_field :picture, accept: 'image/jpeg,image/gif,image/png'
> %>
> <% end %>
>
>
>
>
>
>
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