Rails : How to accessing relation attributes from the view - ruby-on-rails

Question

I have the following rails code
Employee model: id | emp_name | emp_number
class Employee < ActiveRecord::Base
has_many :visitors
end
Visitor Model:id|employee_id|visitor_name|vis_company|vis|email
class Visitor < ActiveRecord::Base
belongs_to :employee
end
Employee Controller :
class EmployeesController < ApplicationController
before_action :set_employee, only: [:show, :edit, :update, :destroy]
# GET /employees
# GET /employees.json
def index
#employees = Employee.all
end
# GET /employees/1
# GET /employees/1.json
def show
end
# GET /employees/new
def new
#employee = Employee.new
end
# GET /employees/1/edit
def edit
end
# POST /employees
# POST /employees.json
def create
#employee = Employee.new(employee_params)
respond_to do |format|
if #employee.save
format.html { redirect_to #employee, notice: 'Employee was successfully created.' }
format.json { render :show, 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 #employee, notice: 'Employee was successfully updated.' }
format.json { render :show, 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
params.require(:employee).permit(:emp_id, :emp_name, :emp_email, :emp_phone, :emp_mobile)
end
end
Visitor Controller :
class VisitorsController < ApplicationController
before_action :set_visitor, only: [:show, :edit, :update, :destroy]
# GET /visitors
# GET /visitors.json
def index
##visitors = Visitor.find(:all, :order => 'emp_name')
##visitors = Visitor.all.includes(:emp_name)
#visitors = Visitor.all
##employees = #visitors.Employee.find(:all, :order => 'emp_name')
##employees = #visitors.employee :include => [:emp_name]
end
# GET /visitors/1
# GET /visitors/1.json
def show
end
# GET /visitors/new
def new
#visitor = Visitor.new
end
# GET /visitors/1/edit
def edit
end
# POST /visitors
# POST /visitors.json
def create
#visitor = Visitor.new(visitor_params)
respond_to do |format|
if #visitor.save
format.html { redirect_to #visitor, notice: 'Visitor was successfully created.' }
format.json { render :show, status: :created, location: #visitor }
else
format.html { render :new }
format.json { render json: #visitor.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /visitors/1
# PATCH/PUT /visitors/1.json
def update
respond_to do |format|
if #visitor.update(visitor_params)
format.html { redirect_to #visitor, notice: 'Visitor was successfully updated.' }
format.json { render :show, status: :ok, location: #visitor }
else
format.html { render :edit }
format.json { render json: #visitor.errors, status: :unprocessable_entity }
end
end
end
# DELETE /visitors/1
# DELETE /visitors/1.json
def destroy
#visitor.destroy
respond_to do |format|
format.html { redirect_to visitors_url, notice: 'Visitor was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_visitor
#visitor = Visitor.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def visitor_params
params.require(:visitor).permit(:vis_id, :vis_name, :vis_email, :vis_company, :employee_id)
end
end
Now my main problem is that I cant access employee name from visitor view :
<p id="notice"><%= notice %></p>
<h1>Listing Visitors</h1>
<table>
<thead>
<tr>
<th>Vis</th>
<th>Vis name</th>
<th>Vis email</th>
<th>Vis company</th>
<th>Visitor Host</th>
<th colspan="3"></th>
</tr>
</thead>
<tbody>
<% #visitors.each do |visitor| %>
<tr>
<td><%= visitor.id %></td>
<td><%= visitor.vis_name %></td>
<td><%= visitor.vis_email %></td>
<td><%= visitor.vis_company %></td>
<td><%= visitor.employee.emp_name %></td>
<td><%= link_to 'Show', visitor %></td>
<td><%= link_to 'Edit', edit_visitor_path(visitor) %></td>
<td><%= link_to 'Destroy', visitor, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</tbody>
</table>
<br>
<%= link_to 'New Visitor', new_visitor_path %>

Answer 1

I created new project from the scratch and for some reason it started working. My mistake was that I didn't define the relation from the start. I added employee_id after everything else is created I think the rails didn't build the relation at that time. thanks everyone