Rails updating records via nested model forms and delete links

Question

I have two models- Family and Person:(Using Mongoid and Rails 3.2.13)

family.rb

attr_accessible :location  
has_many :persons
accepts_nested_attributes_for :persons

person.rb

attr_accessible :name
belongs_to :family

In the FamiliesController I have:

  def edit
   @family=Family.find(params[:id])
  end

  def update
    @family=Family.find(params[:id])
    @family.update_attributes(params[:family])
  end

in the edit.html.erb for families controller:

<div class="container">
<%= simple_form_for @family do |f| %>
  <%= f.error_messages %>
    <%= f.input :location %>
    <%= f.simple_fields_for :persons do |p| %>
      <%= p.input :name %>
    <%end%>
  <%= f.submit "Submit" %>
<% end %>
</div>

But it only updates the family attributes and the persons attrubutes remains the same.

How do I update the Person's attributes as well?

Also I want to add a delete button for each person which will delete the corresponding person. How to achieve that?

it is used to filter which params are allowed , but if you are not using it then that is not the cause. — tihom
– tihom, Commented Sep 21, 2013 at 7:51

Oleg Haidul · Accepted Answer · 2013-09-21 07:46:59Z

1

Try to add persons_attributes in attr_accessible # In family.rb

answered Sep 21, 2013 at 7:46

Oleg Haidul

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5 Comments

mrudult Over a year ago

I have that accepts_nested_attributes_for :persons then why do I need this?

mrudult Over a year ago

Yeah that worked like charm. How about adding a seperate delete button for each person? See questions last line. Will adding a simple delete button for each person do the work?

Oleg Haidul Over a year ago

B/c accepts_nested_attributes_for :persons only generate extra params for your nested model.

Oleg Haidul Over a year ago

I think, delete button will be inside persons_attributes. It will work well.

mrudult Over a year ago

Update Well I found a solution here. But that gives me No input found for checkbox error.

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