Rails 4, Devise, Nested attributes not saving to database - ruby-on-rails

Question

I am using devise for user authentication in a rails 4 app.
After the user registers, I am redirecting the user to a page which has some additional fields they can choose to populate. I have the form appearing correctly, but it is not saving the nested attribute to the database.
I have a model called "seeker_skill" which has this relation to user:
user has_many seeker_skills
seeker_skills belongs to user
user.rb
class User < ActiveRecord::Base
has_many :seeker_skills, dependent: :destroy
accepts_nested_attributes_for :seeker_skills, :reject_if => lambda { |a| a[:skill].blank? }, :allow_destroy => true
devise :database_authenticatable, :registerable,
:recoverable, :rememberable, :trackable, :validatable
end
users_controller.rb
class UsersController< ApplicationController
def job_seeker_additional_fields
#user = current_user
#user.seeker_skills.build
#seeker_skill = current_user.seeker_skills.build
end
end
seeker_skill.rb
class SeekerSkill < ActiveRecord::Base
belongs_to :user
validates :skill, presence: true
end
seeker_skills_controller.rb
class SeekerSkillsController < ApplicationController
def create
#seeker_skill = current_user.seeker_skills.build(seeker_skill_params)
if #seeker_skill.save
redirect_to root_url
else
flash[:error] = "Invalid Input"
redirect_to myskills_path
end
end
def destroy
end
def new
#seeker_skill = current_user.seeker_skills.build
#user = current_user
end
private
def seeker_skill_params
params.require(:seeker_skill).permit(:skill)
end
end
I believe I have the permitted parameters set up correctly in the application controller.
application_controller.rb
class ApplicationController < ActionController::Base
before_filter :configure_permitted_parameters, if: :devise_controller?
protected
def configure_permitted_parameters
devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:username, :role, :email,
:company, :password, :password_confirmation, :remember_me,
seeker_skills_attributes: [:id, :skill, :user_id, :_destroy]) }
devise_parameter_sanitizer.for(:sign_in) { |u| u.permit(:login,
:username, :role, :email, :company, :password, :remember_me) }
devise_parameter_sanitizer.for(:account_update) { |u| u.permit(:username, :bio,
:min_salary, :location, :radius, :role, :email, :company, :password, :password_confirmation,
:current_password, seeker_skills_attributes: [:id, :skill, :user_id, :_destroy]) }
end
end
Finally there is the form in the view: Eventually I will add option to add multiple skills at once.
<%= form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put }) do |f| %>
<%= f.fields_for(#seeker_skill) do |f| %>
<%= f.text_field :skill, placeholder: "Add skill" %>
<% end %>
<%= f.submit "Submit", class: "btn btn-large btn-primary" %>
<% end %>
What am I missing? I have set this up with a custom user authentication system but never with devise.

Answer 1

Change your nested fields call to:
<%= f.fields_for(:seeker_skill) do |f| %>
with a symbol, not the object. When created with object, it names the field from the object class name, so in result you got params[:user][:seeker_skill], which are then filtered by strong params. While run with symbol, it tries to execute method with given name, treats it as an object and if the form object defines <name>_attributes sets the subobject name to <name>_attributes.