Ruby on Rails 4, Dynamically create table for each user - ruby-on-rails

Question

I'm new to Rails and I'm creating an Application where users can log in, and it dynamically generates a Table where they can make entries. I've managed to make the login but I don't realize how to create a table which is associated to a user.
My users_controller.rb class:
class UsersController < ApplicationController
before_action :set_user, only: [:show, :edit, :update, :destroy]
# GET /users
# GET /users.json
def index
#users = User.order(:name)
end
# GET /users/1
# GET /users/1.json
def show
end
# GET /users/new
def new
#user = User.new
end
# GET /users/1/edit
def edit
end
# POST /users
# POST /users.json
def create
#user = User.new(user_params)
respond_to do |format|
if #user.save
format.html { redirect_to login_url, notice: "User #{#user.name} was successfully created." }
format.json { render action: 'show', status: :created, location: #user }
#HERE I WOULD LIKE TO CREATE A TABLE ASSOSSIATED TO THE USER
#rapport_table = User.rapport_table.create
else
format.html { render action: 'new' }
format.json { render json: #user.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /users/1
# PATCH/PUT /users/1.json
def update
respond_to do |format|
if #user.update(user_params)
format.html { redirect_to users_url, notice: "User #{#user.name} was successfully updated." }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: #user.errors, status: :unprocessable_entity }
end
end
end
# DELETE /users/1
# DELETE /users/1.json
def destroy
#user.destroy
respond_to do |format|
format.html { redirect_to users_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_user
#user = User.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def user_params
params.require(:user).permit(:name, :password, :password_confirmation)
end
end
rapport_table.rb
class RapportTable < ActiveRecord::Base
belongs_to :user
end
12341324123_create_rapport_tables.rb
class CreateRapportTables < ActiveRecord::Migration
def self.up
create_table :rapport_tables do |t|
t.date :date
t.text :description
t.integer :time
t.timestamps
end
end
def self.down
drop_table :rapport_tables
end
end
show.html.erb
<p id="notice"><%= notice %></p>
<p>
<strong>Name:</strong>
<%= #user.name %>
</p>
<%= link_to 'Edit', edit_user_path(#user) %> |
<%= link_to 'Back', users_path %>

Answer 1

You never, ever want to create tables inside a database in a runtime. Instead, you'll need to create some more models:
class RaportTable < ActiveRecord::Base
belongs_to :user
has_many :columns
has_many :rows
end
class Column < ActiveRecord::Base
# attr_accessible :name, :order
belongs_to :raport_table
has_many :cells
end
class Row < ActiveRecord::Base
# attr_accessible :row_number
belongs_to :raport_table
has_many :cells
end
class Cell < ActiveRecord::Base
# attr_accessible :value
belongs_to :column
belongs_to :row
end
This should be sufficient to start with.