ruby-on-rails,ruby-on-rails-4,nested,nested-forms,nested-attributes , Two nested form objects
Two nested form objects
Question:
Tag: ruby-on-rails,ruby-on-rails-4,nested,nested-forms,nested-attributes
I have two nested objects (Attachment inside Widget, Widget inside Lesson).
Lesson > Widgets > Attachments
Lesson > Widgets > Links
Everything is fine, but if I click on "Remove attachment", and then I click on "Update Lesson", nested attachments in the widget are not removed. Is that because I click on "Update Lesson", instead of "Updated Widget" ?
Lesson
class Lesson < ActiveRecord::Base
has_many :widgets, as: :widgetable, autosave: true
accepts_nested_attributes_for :widgets, allow_destroy: true
Widget
class Widget < ActiveRecord::Base
belongs_to :widgetable, polymorphic: true
has_many :attachments, as: :attachable, autosave: true
accepts_nested_attributes_for :attachments, allow_destroy: true
has_many :links, as: :linkable, autosave: true
accepts_nested_attributes_for :links, allow_destroy: true
Attachment
class Attachment < ActiveRecord::Base
belongs_to :attachable, polymorphic: true
mount_uploader :file, AttachmentUploader
Link
class Link < ActiveRecord::Base
belongs_to :linkable, polymorphic: true
Lesson (Edit Form)
<%= f.fields_for :widgets do |w| %>
<div class="row">
<div class="col-xs-8">
<h2>Name</h2>
<%=w.text_field :name, placeholder: "Name of widget", class: "form-control"%>
<%= w.fields_for :attachments do |h| %>
<h4>Attachments</h4>
<div class="row">
<div class="col-sm-6">
<%=h.text_field :name, placeholder: "Title", class: "form-control"%>
</div>
<div class="col-sm-6">
<%=h.file_field :file, class: "form-control"%>
</div>
</div>
<div class="row">
<div class="col-sm-12">
<br />
<%=h.text_area :description, placeholder: "Write a description", class: "form-control autogrow"%>
</div>
</div>
<%= w.link_to_remove "Remove attachment", class: "text-right"%>
<hr /><br />
<% end %>
<%= w.fields_for :links do |l| %>
<h4>Links</h4>
<%=l.text_field :title, placeholder: "Title", class: "form-control"%>
<%=l.text_field :description, placeholder: "Description", class: "form-control"%>
<%=l.text_field :url, placeholder: "http://", class: "form-control"%>
<%= l.link_to_remove "Remove Link", class: "text-right"%>
<hr /><br />
<% end %>
<p>
<%=w.link_to_add "Add attachment", :attachments, class: "btn btn-sm btn-success" %>
<%=w.link_to_add "Add Link", :links, class: "btn btn-sm btn-success" %>
</p>
</div>
<div class="col-xs-4 text-right">
<%= w.link_to_remove "Remove widget", class: "btn btn-sm btn-danger" %>
</div>
</div>
<hr />
<p></p>
<% end %>
<p><%= f.link_to_add "Add widget", :widgets, class: "btn btn-sm btn-success pull-right" %></p>
Answer:
Change this line
<%= w.link_to_remove "Remove attachment", class: "text-right"%>
to
<%= h.link_to_remove "Remove attachment", class: "text-right"%>
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