Rails 4 Nested Form not Passing Nested Attributes in Params - ruby-on-rails-4

Question

When I submit the form it is passing {"utf8"=>"✓", "authenticity_token"=>"blah", "client"=>{"first_name"=>"jack", "last_name"=>"kool","complaints"=>{"symptom"=>"burnt"} in the params and I am getting Unpermitted Parameters: complaints Since complaints is nested in Client, it should be passing complaints_attributes, like I have it set up in the strong params, and I can't figure out why it isn't.
class ClientsController < ApplicationController
def new
#client = Client.new
end
def edit
#client = Client.find(params[:id])
end
def create
#client = Client.new(client_params)
if #client.save
redirect_to #client
else
render 'new'
end
end
def update
#client = Client.find(params[:id])
if #client.update(client_params)
redirect_to #client
else
render 'edit'
end
end
private
def client_params
params.require(:client).permit(:first_name, :last_name, complaints_attributes: [ :symptom, :id ])
end
end
Client model:
class Client < ActiveRecord::Base
has_many :complaints
has_one :personal_disease_history
has_one :family_disease_history
has_many :surgeries
has_many :hospitalizations
has_many :medications
has_many :allergies
validates :first_name, :last_name, presence: true
accepts_nested_attributes_for :complaints
end
Complaint model:
class Complaint < ActiveRecord::Base
belongs_to :client
end
Form:
<%= form_for :client, url: clients_path, html: { class: "form-inline" } do |f| %>
<div class="panel panel-success">
<div class="panel-heading">
<h3 class="panel-title">Health History Form</h3>
</div>
<div class="panel-body">
<div class="form-blocks"><legend>Name</legend>
<div class="form-group">
<%= f.label :first_name, class: "sr-only" %>
<%= f.text_field :first_name, class: "form-control", placeholder: "First Name" %>
</div>
<div class="form-group">
<%= f.label :last_name, class: "sr-only" %>
<%= f.text_field :last_name, class: "form-control", placeholder: "Last Name" %>
</div>
</div>
<div class="form-blocks"><legend>Complaints</legend>
<div class="form-group">
<%= f.fields_for :complaints do |builder| %>
<%= builder.label :symptom, class: "sr-only" %>
<%= builder.text_field :symptom, class: "form-control", placeholder: "Symptom" %>
<% end %>
</div>
</div>
<div>
<%= f.submit "Submit Form", class: "btn btn-primary btn-lg"%>
</div>
<% end %>

Answer 1

inside client controller create action, try saying this inside the if #client.save:
Complaint.create(symptom: params[
"client"]["complaints"]["symptom"], client_id: #client.id)
the unpermitted parameter is related to the nested attribute problem but this should get the actual record saving. If that doesn't do it, please post the stack trace surrounding the commit.
have couple other ideas: but (1) you have complaint_attributes in the permitted params but you could change that to complaint bc that's what's coming through in the params.