How to save form values in database using ROR - ruby-on-rails

Question

Can anybody help me to save these form values in database.I have already created one form.When I clicked on submit button the below validation message is coming.
1 error prohibited this post from being saved:
Gender must be accepted
Please check the code and help me to save all values in DB.If any error found please make it correct.
My code is as follows:
views/students/index.html.erb
<h1>Choose the option</h1>
<p>
<%= link_to "Enter student data",students_new_path %>
</p>
<p>
<%= link_to "Display your data",students_show_path %>
</p>
views/students/new.html.erb
<h1>Enter your data</h1>
<%= form_for #student,:url => {:action => 'create'} do |f| %>
<% if #student.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#student.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% #student.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<p>
<label for="name">Name:</label>
<%= f.text_field :name,placeholder:"Enter your name" %>
</p>
<p>
<label for="gender">Gender:</label><br>
<%= f.radio_button :gender,'Male',:checked => true %>
<%= f.label :Male %>
<%= f.radio_button :gender,'Female' %>
<%= f.label :Female %>
</p>
<p>
<label for="city">Select the City</label>
<%= f.select(:city,options_for_select([['Bhubaneswar','Bhubaneswar'],['Cuttack','Cuttack'],['Behrempur','Behrempur'],['Puri','Puri']],selected: "Puri")) %>
</p>
<p>
<%= f.check_box :terms_service %> accept terms and service
</p>
<p>
<%= f.submit "Submit" %>
</p>
<% end %>
controller/students_controller.rb
class StudentsController < ApplicationController
def index
end
def show
end
def new
#student=Student.new
end
def create
#student=Student.new(users_params)
if #student.save
flash[:notice]="You have signed up successfully.."
flash[:color]="valid"
redirect_to :action => 'index'
else
flash[:notice]="You have not signed up successfully"
flash[:color]="invalid"
render :new
end
end
private
def users_params
params.require(:student).permit(:name,:gender,:city,:terms_service)
end
end
model/student.rb
class Student < ActiveRecord::Base
validates :name ,:presence => true,:length => { :minimum => 6 }
validates :gender, :acceptance => true
validates :terms_service, :acceptance => true
end
migrate\20150114061737_create_students.rb
class CreateStudents < ActiveRecord::Migration
def change
create_table :students do |t|
t.string :name
t.string :gender
t.string :city
t.string :terms_service
t.timestamps null: false
end
end
end
Please help me to run this code successfully.Thanks in advance..

Answer 1

Validation type used for gender field is wrong ie acceptance validation is used when you want to check if a check-box is checked by user in the form. In your situation you should use
validates :gender, :presence => true