Facing error while using render in rails - ruby-on-rails

Question

I am having 2 models:
app/models/employee.rb:
class Employee < User
has_many :insurances
end
app/models/insurance.rb:
class Insurance < ActiveRecord::Base
belongs_to :employee
end
app/controllers/employees_controller.rb:
class EmployeesController < ApplicationController
before_action :set_employee, only: [:show, :edit, :update, :destroy]
before_action :employee_params, only: [:create, :update]
# GET /employees
# GET /employees.json
def index
#employees = Employee.all
end
# GET /employees/1
# GET /employees/1.json
def show
#employee = Employee.find(params[:id])
end
# GET /employees/new
def new
#employee = Employee.new
end
# GET /employees/1/edit
def edit
#employee = Employee.find(params[:id])
end
# POST /employees
# POST /employees.json
def create
#employee = Employee.new(employee_params)
respond_to do |format|
if #employee.save
format.html { redirect_to employees_url, notice: "#{#employee.first_name} was successfully created." }
format.json { render :index, status: :created, location: #employee }
else
format.html { render :new }
format.json { render json: #employee.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /employees/1
# PATCH/PUT /employees/1.json
def update
respond_to do |format|
if #employee.update(employee_params)
format.html { redirect_to employees_url, notice: "#{#employee.first_name} was successfully updated."}
format.json { render :index, status: :ok, location: #employee }
else
format.html { render :edit }
format.json { render json: #employee.errors, status: :unprocessable_entity }
end
end
end
# DELETE /employees/1
# DELETE /employees/1.json
def destroy
#employee.destroy
respond_to do |format|
format.html { redirect_to employees_url, notice: 'Employee was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_employee
#employee = Employee.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def employee_params
if params[:employee][:password].blank? && params[:employee][:password_confirmation].blank?
params[:employee].delete(:password)
params[:employee].delete(:password_confirmation)
end
params[:employee].permit(:email, :password, :employee_id,:employee_work_id, :first_name, :middle_name, :last_name, :gender, :date_of_birth, :driver_license_no, :driver_license_expiry_date, :martial_status, :nationality, :office_address, :residence_address, :city, :state_province, :zip_code, :country, :work_number, :mobile_number, :home_number, :other_email)
end
end
app/controllers/insurance_controller.rb:
class InsurancesController < ApplicationController
before_action :set_insurance, only: [:show, :edit, :update, :destroy]
respond_to :html
def index
#insurances = Insurance.all
respond_with(#insurances)
end
def show
respond_with(#insurance)
end
def new
#insurance = Insurance.new
respond_with(#insurance)
end
def edit
end
def create
#insurance = Insurance.new(insurance_params)
#insurance.save
respond_with(#insurance)
end
def update
#insurance.update(insurance_params)
respond_with(#insurance)
end
def destroy
#insurance.destroy
respond_with(#insurance)
end
private
def set_insurance
#insurance = Insurance.find(params[:id])
end
def insurance_params
params.require(:insurance).permit(:employee_id,:name_of_dependent, :relationship, :name, :of_spouse, :children, :date_of_birth, :policy_number, :policy_provider, :policy_type)
end
end
app/views/insurances/_show.html.erb:
<%= employee.insurances.each do |emp| %>
<p>
<strong>Name of dependent:</strong>
<%= emp.name_of_dependent %>
</p>
<p>
<strong>Name:</strong>
<%= emp.name %>
</p>
<% end %>
When i use link_to with show path, it is working fine.
app/views/employees/show.html.haml:
%p
%strong Title:
= #employee.full_name
%p
%strong Text:
= #employee.gender
%p
= link_to 'Insurance', insurance_path
after accordion code, i used render as follows:
%p
%strong Title:
= #employee.full_name
%p
%strong Text:
= #employee.gender
%p
#accordion2.panel-group
#new-student-widget.panel.panel-default.left-column-entry
.header.panel-heading
.header-content.panel-title
%a#newStudentToggle{"data-parent" => "#accordion2", "data-target" => "#newStudent", "data-toggle" => "collapse"} Insurance Details
#newStudent.panel-collapse.collapse
#newStudentInner.panel-body
= render :template => 'insurances/show', locals: { employee: #employee }
When i am using render in accordion, i am getting error as:
NoMethodError in Employees#show
undefined method `name_of_dependent' for nil:NilClass
Please help me out.

Answer 1

If you are calling show as partial then rename show.html to _show.html
and pass #employeee instance variable which is present in accordion code
= render :template => 'insurances/show', locals: { employee: #employee }
and in _show page
- employee.insurances.each do |ins|
%p.strong Name of dependent:
= ins.name_of_dependent
%p.strong Name:
= ins.name

Answer 2

Pass the insurance object when you are rendering the template :
- #insurances.each do |insurancce|
= render template: 'insurances/show', locals: { insurance: insurance }
- end
Make sure you instantiated the #insurance object in your controller action, where you instantiated the #employee object.
#employee = current_user # or anything else
#insurances = #employee.insurances
Then in your Insurances#show template use insurance instead of #insurance like this :
<p id="notice"><%= notice %></p>
<p>
<strong>Name of dependent:</strong>
<%= insurance.name_of_dependent %>
</p>
<p>
<strong>Name:</strong>
<%= insurance.name %>
</p>