Add table columns correctly in rails 4 - ruby-on-rails

Question

I'm writing a simple rails app which has users,projects and tasks.
And I have the next problem: each user must have his own projects,and each projects must have it's own tasks.When I'm trying to debug my app via console I can see that projects and tasks are created without "user_id" and "project_id".So my DB was configurated incorrectly and because of app doesn't work correctly(columns weren't add to Projects and Tasks tables and because of it app simply can't create projects,that will belong to only one user and tasks which belong to only one project.(and that's the main point of the app)
Can someone help me to deal with my models and migrations,cause I'me really stuck with this stuff
Here are the corresponding models and migrations
Project.rb
class Project < ActiveRecord::Base
belongs_to :user
has_many :tasks, dependent: :destroy
validates :name, presence: true, uniqueness: true
end
User.rb
class User < ActiveRecord::Base
has_many :tasks, through: :projects, dependent: :destroy
has_many :projects, dependent: :destroy
attr_accessor :remember_token
before_save { self.email = email.downcase }
validates :name, presence: true, length: { maximum: 50 }
VALID_EMAIL_REGEX = /\A[\w+\-.]+#[a-z\d\-.]+\.[a-z]+\z/i
validates :email, presence: true, length: { maximum: 255 },
format: { with: VALID_EMAIL_REGEX },
uniqueness: { case_sensitive: false }
has_secure_password
validates :password, presence: true, length: { minimum: 6 }, allow_nil: true
# Returns the hash digest of the given string.
def User.digest(string)
cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST :
BCrypt::Engine.cost
BCrypt::Password.create(string, cost: cost)
end
# Returns a random token.
def User.new_token
SecureRandom.urlsafe_base64
end
# Remembers a user in the database for use in persistent sessions.
def remember
self.remember_token = User.new_token
update_attribute(:remember_digest, User.digest(remember_token))
end
# Returns true if the given token matches the digest.
def authenticated?(remember_token)
return false if remember_digest.nil?
BCrypt::Password.new(remember_digest).is_password?(remember_token)
end
# Forgets a user
def forget
update_attribute(:remember_digest, nil)
end
end
Task.rb
class Task < ActiveRecord::Base
belongs_to :project
end
Migration for creating projects
class CreateProjects < ActiveRecord::Migration
def change
create_table :projects do |t|
t.string :name
t.timestamps null: false
end
end
end
And for creating tasks
class CreateTasks < ActiveRecord::Migration
def change
create_table :tasks do |t|
t.string :name
t.datetime :deadline
t.timestamps null: false
end
end
end
Now when I try to create/update/delete a new task I always get some errors like
Also here are the corresponding controllers,maybe something also wrong there
projects_controller.rb
class ProjectsController < ApplicationController
before_action :find_project!, only: [ :update, :destroy]
# GET /projects
# GET /projects.json
def index
#projects = current_user.projects
#project = Project.new
end
# GET /projects/1
# GET /projects/1.json
def show
end
# GET /projects/new
def new
#project = Project.new
end
# GET /projects/1/edit
def edit
end
# POST /projects
# POST /projects.json
def create
#project = current_user.projects.create(project_params)
respond_to do |format|
if #project.save
format.html { redirect_to home_url }
format.json { render :show, status: :created, location: #project }
else
format.html { render :home_url }
format.json { render json: #project.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /projects/1
# PATCH/PUT /projects/1.json
def update
respond_to do |format|
if #project.update(project_params)
format.html { redirect_to home_url }
format.json { render :show, status: :ok, location: #project }
else
format.html { render :home_url }
format.json { render json: #project.errors, status: :unprocessable_entity }
end
end
end
# DELETE /projects/1
# DELETE /projects/1.json
def destroy
#project.destroy
respond_to do |format|
format.html { redirect_to home_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions
def find_project!
#project = current_user.projects.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def project_params
params.require(:project).permit(:name)
end
end
tasks_controller.rb
class TasksController < ApplicationController
before_action :set_task, only: [:show, :edit, :update, :destroy]
# GET /tasks
# GET /tasks.json
def index
#tasks = Task.all
end
# GET /tasks/1
# GET /tasks/1.json
def show
end
# GET /tasks/new
def new
#task = Task.new
end
# GET /tasks/1/edit
def edit
end
# POST /tasks
# POST /tasks.json
def create
#task = #project.tasks.create(task_params)
respond_to do |format|
if #task.save
format.html { redirect_to home_url }
format.json { render :show, status: :created, location: #task }
else
format.html { render :home_url }
format.json { render json: #task.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /tasks/1
# PATCH/PUT /tasks/1.json
def update
respond_to do |format|
if #task.update(task_params)
format.html { redirect_to home_url }
format.json { render :home_url, status: :ok, location: #task }
else
format.html { render :home_url }
format.json { render json: #task.errors, status: :unprocessable_entity }
end
end
end
# DELETE /tasks/1
# DELETE /tasks/1.json
def destroy
current_user.tasks.where(id: params[:task][:task_ids])
respond_to do |format|
format.html { redirect_to home_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def task_params
params.require(:task).permit(:name, :position)
end
def find_task!
#task = current_user.tasks.find(params[:id])
end
def find_project!
#project = current_user.projects.find(params[:task][:project_id])
end
end

Answer 1

Add the belongs to in the migrations as well.
class CreateProjects < ActiveRecord::Migration
def change
create_table :projects do |t|
t.string :name
t.belongs_to :user
t.timestamps null: false
end
end
end
class CreateTasks < ActiveRecord::Migration
def change
create_table :tasks do |t|
t.string :name
t.datetime :deadline
t.belongs_to :project
t.timestamps null: false
end
end
end