worked on library module perform create,retrieve,update,delete & search operation

app/assets/stylesheets/application.css

@@ -50,4 +50,6 @@
     height: 100%;
     width: 100%;
     opacity: 0.4;
-  }
\ No newline at end of file
+  }
+
+  
\ No newline at end of file

app/controllers/api/v1/books_controller.rb

+class Api::V1::BooksController < ApplicationController
+  def index
+    recipe = Book.all.order(created_at: :desc)
+    render json: recipe
+  end
+
+
+  def create
+    book = Book.create!(book_params)
+    if book
+      render json: book
+    else
+      render json: book.errors
+    end 
+  end
+
+
+  def show
+    if book
+      render json: book
+    else
+      render json: book.errors
+      end
+  end
+
+
+  def destroy
+    puts "hhhgh"
+    book&.destroy
+    render json: { message: 'Book deleted!' }
+  end
+
+
+  def search
+    if params[:name].blank?  
+    redirect_to(root_path, alert: "Empty field!") and return  
+    else
+     if bookFound
+     render json: bookFound;
+     else
+      render json: {message: "Book Not Found"}
+      end
+      end
+    end
+  end
+
+
+  def update
+    if book
+      book.update({name: 'Math'})
+      render json: book
+    else
+      render json: {message: 'Book Not Found'}
+    end
+  end
+
+  private
+
+  def book_params
+    params.permit(:name, :writterName, :courseName)
+  end
+
+  def book
+    @book ||= Book.find(params[:id])
+  end
+
+  def bookFound
+    @parameter= params[:name].downcase
+    @bookFound ||= Book.all.where("name LIKE :name", name: @parameter)
+end

app/controllers/api/v1/employees_controller.rb

@@ -5,6 +5,7 @@ class Api::V1::EmployeesController < ApplicationController
   end
 
   def create
+    puts employee
     employee = Employee.create!(employee_params)
     if employee
       render json: employee

app/controllers/api/v1/recipes_controller.rb

@@ -40,6 +40,7 @@ class Api::V1::RecipesController < ApplicationController
   private
 
   def recipe_params
+    puts params
     params.permit(:name, :image, :ingredients, :instruction)
   end
 

app/javascript/components/Home.jsx

@@ -27,6 +27,14 @@ export default () => (
         >
           View Employees
         </Link>
+        <br></br>
+        <Link
+          to="/library"
+          className="btn btn-lg custom-button"
+          role="button"
+        >
+          View Library
+        </Link>
       </div>
     </div>
   </div>

app/javascript/components/Recipe.jsx

@@ -27,8 +27,9 @@ class Recipe extends React.Component {
                 }
                 throw new Error("Network response was not ok.");
             })
-            .then(response => this.setState({ recipe: response }))
+            .then(response =>  this.setState({ recipe: response }) )
             .catch(() => this.props.history.push("/recipes"));
+            
     }
 
 

app/javascript/components/Recipes.jsx

@@ -25,6 +25,8 @@ class Recipes extends React.Component {
 
     render() {
         const { recipes } = this.state;
+        console.log(recipes);
+        
         const allRecipes = recipes.map((recipe, index) => (
             <div key={index} className="col-md-6 col-lg-4">
                 <div className="card mb-4">

app/javascript/components/library/AddBooks.jsx

+import React, { Component } from 'react';
+import { Link, useHistory } from 'react-router-dom';
+import { Router } from 'react-router';
+import { data } from 'jquery';
+
+class AddBooks extends Component {
+    constructor(props) {
+        super(props)
+        this.saveBook = this.saveBook.bind(this)
+        this.getFieldValue = this.getFieldValue.bind(this)
+        this.goBack = this.goBack.bind(this)
+        this.state = {
+            name: 'ftgre',
+            writterName: 'tert',
+            courseName: 'rtre'
+        }
+
+    }
+    goBack() {
+        Router.history.goBack();
+    }
+
+    saveBook(event) {
+        event.preventDefault();
+        const url = "/api/v1/books/create";
+        const { name, writterName, courseName } = this.state;
+
+        if (name.length == 0 || writterName.length == 0 || courseName.length == 0)
+            return;
+
+        const body = {
+            name,
+            writterName,
+            courseName
+        };
+
+        const token = document.querySelector('meta[name="csrf-token"]').content;
+        fetch(url, {
+            method: "POST",
+            headers: {
+                "X-CSRF-Token": token,
+                "Content-Type": "application/json"
+            },
+            body: JSON.stringify(body)
+        })
+            .then(response => {
+                if (response.ok) {
+                    return response.json();
+                }
+                throw new Error("Network response was not ok.");
+            })
+            .then(response => this.props.history.push('/booksList'))
+            .catch(error => console.log(error.message));
+    }
+
+    getFieldValue(event) {
+        this.setState({ [event.target.name]: event.target.value })
+    }
+
+    render() {
+        return (<>
+            <section className="jumbotron jumbotron-fluid text-center">
+                <div className="container py-5">
+                    <h1 className="display-4">ADD BOOk</h1>
+                </div>
+            </section>
+            <div className="py-5">
+                <main className="container">
+                    <div className="row">
+                        <form onSubmit={this.saveBook}>
+                        <div className="form-group">
+                            <label htmlFor="name">Book name</label>
+                            <input
+                                onChange={this.getFieldValue}
+                                // ref={ac => this.state.bookName = ac.value}
+                                type="text"
+                                name="name"
+                                id="name"
+                                className="form-control"
+                            required
+                            />
+                        </div>
+                        <div className="form-group">
+                            <label htmlFor="writterName">Writter name</label>
+                            <input
+                                onChange={this.getFieldValue}
+                                // ref={ac => this.state.writterName = ac.value}
+                                type="text"
+                                name="writterName"
+                                id="writterName"
+                                className="form-control"
+                            required
+                            />
+                        </div>
+                        <div className="form-group">
+                            <label htmlFor="courseName">Course name</label>
+                            <input
+                                onChange={this.getFieldValue}
+                                // ref={ac => this.state.courseName = ac.value}
+                                type="text"
+                                name="courseName"
+                                id="courseName"
+                                className="form-control"
+                                required
+                            />
+                        </div>
+                        <button type="submit" className="btn custom-button mt-3" /* onClick={this.saveBook} */>ADD</button>
+                        </form>
+
+                    </div>
+                    <button onClick={this.goBack} >Go Back</button>
+                    <Link to="/" className="btn btn-link">
+                        Home
+            </Link>
+                </main>
+            </div>
+        </>)
+    }
+}
+
+export default AddBooks;
\ No newline at end of file

app/javascript/components/library/BookDetails.jsx

+import React, {Component} from 'react';
+import {Link} from 'react-router-dom';
+
+class BookDetails extends Component{
+    constructor(props){
+        super(props);
+        this.setState = this.setState.bind(this)
+        this.deleteBook = this.deleteBook.bind(this)
+        this.state= { book: {} }
+    }
+
+    componentDidMount(){
+        const id = this.props.location.search.split('?')[1].split('=')[1]
+        const url = `/api/v1/book/show/${id}`;
+        const token = document.querySelector('meta[name="csrf-token"]').content;
+
+        fetch(url, {
+            method: "GET",
+            headers: {
+                "X-CSRF-Token": token,
+                "Content-Type": "application/json"
+            }
+        })
+            .then(response => {
+                if (response.ok) {
+                    return response.json();
+                }
+                throw new Error("Network response was not ok.");
+            })
+            .then((response) =>   this.setState({book: response}))
+            .catch(error => console.log(error.message));
+    }
+
+    deleteBook() {
+        const id = this.props.location.search.split('?')[1].split('=')[1]
+        const url = `/api/v1/book/destroy/${id}`;
+        const token = document.querySelector('meta[name="csrf-token"]').content;
+
+        fetch(url, {
+            method: "DELETE",
+            headers: {
+                "X-CSRF-Token": token,
+                "Content-Type": "application/json"
+            }
+        })
+        .then(response => {
+            if (response.ok) {
+                return response.json();
+            }
+            throw new Error("Network response was not ok.");
+        })
+        .then((response) => this.props.history.push('/booksList'))
+        .catch(error => console.log(error.message));
+    }
+
+    render(){
+        const {book} = this.state
+        return (           
+             <>
+            <section className="jumbotron jumbotron-fluid text-center">
+                <div className="container py-5">
+                    <h1 className="display-4">Book Details</h1>
+                </div>
+            </section>
+            <div className="py-5">
+                <main className="container">
+                    <div className="text-right mb-3">
+                    </div >
+                    <div className="row">
+                        <div>{book.name}</div>
+                        <div>{book.writterName}</div>
+                        <div>{book.courseName}</div>
+                        <button >edit</button>
+                        <button onClick={this.deleteBook}>delete</button>
+                     </div>
+                </main>
+            </div>
+        </>)
+    }
+}
+
+export default BookDetails
\ No newline at end of file

app/javascript/components/library/BooksList.jsx

+import React,{Component} from 'react';
+import {Link,Route} from 'react-router-dom'
+import BookDetails from './BookDetails';
+
+class BooksList extends Component{
+    constructor(props){
+        super(props);
+        this.getName = this.getName.bind(this)
+        this.searchByBookName = this.searchByBookName.bind(this)
+        this.routeToBookDetais = this.routeToBookDetais.bind(this)
+        this.state={
+            books: [],
+            name: ''
+        }
+    }
+
+    componentDidMount() {
+        const url = "/api/v1/books/index";
+        fetch(url)
+            .then(response => {
+                if (response.ok) {
+                    return response.json();
+                }
+                throw new Error("Network response was not ok.");
+            })
+            .then(response => this.setState({ books: response }))
+            .catch((error) => console.log(error))
+    }
+
+    getName(){
+        this.setState({ [event.target.name]: event.target.value })
+    }
+
+    searchByBookName(event) {
+        event.preventDefault();
+        const { name } = this.state;
+
+        if (name.length == 0)
+            return;
+        const url = `/api/v1/book/search/${name}`;
+        const token = document.querySelector('meta[name="csrf-token"]').content;
+    
+        fetch(url, {
+                method: "GET",
+                headers: {
+                    "X-CSRF-Token": token,
+                    "Content-Type": "application/json"
+                }
+        })
+        .then(response => {
+            if (response.ok) {
+                return response.json();
+            }
+            throw new Error("Network response was not ok.");
+        })
+        .then((response) => this.setState({book: response}))
+        .catch(error => console.log(error.message));
+    }
+
+    routeToBookDetais(e){
+        e.preventDefault()
+        console.log(e,"gf");
+        
+        this.props.history.push(`/bookDetails`)
+    }
+
+
+
+    render(){
+        const {books} = this.state
+        const showBooks = books.map((book, i) => (
+            <div key={i} className="col-md-6 col-lg-4">
+                <div className="card mb-4">
+                {/* <img
+                        src={"../../../assets/images/book.png"}
+                        className="card-img-top"
+                        alt={`book`}
+                    /> */}
+                    <div className="card-body">
+                        <h5 className="card-title">{book.name}</h5>
+                        <Link to={`/bookDetails?id=${book.id}`}>view book details</Link>
+                    </div>
+                </div>
+            </div>
+        ));
+        const noBooks = (
+            <div className="vw-100 vh-50 d-flex align-items-center justify-content-center">
+                <h4>
+                 books not avalaible <Link to="/addBooks">create one</Link>
+                </h4>
+            </div>
+        );
+        return (
+            <>
+            <section className="jumbotron jumbotron-fluid text-center">
+                <div className="container py-5">
+                    <h1 className="display-4">Available books in library</h1>
+                </div>
+            </section>
+            <div className="py-5">
+                <main className="container">
+                    <div className="text-right mb-3">
+                        <Link to="/addBooks" className="btn custom-button">
+                            Add New book
+              </Link>
+                    </div >
+                    <div className="row">
+                              <input
+                                onChange={this.getName}
+                                type="text"
+                                name="name"
+                                id="name"
+                                className="form-control"
+                           />
+                           <button onClick={this.searchByBookName}>search</button>
+                            </div>
+                    <div className="row">
+                        {books.length > 0 ? showBooks : noBooks}
+                    </div>
+                    <Link to="/" className="btn btn-link">
+                        Home
+            </Link>
+                </main>
+            </div>
+        </>
+        )
+    }
+}
+
+export default BooksList;
\ No newline at end of file

app/javascript/components/library/Library.jsx

+import React, { Component } from 'react';
+import { Link } from 'react-router-dom';
+
+class Library extends Component {
+    render() {
+        return (<>
+            <section className="jumbotron jumbotron-fluid text-center">
+                <div className="container py-5">
+                    <h1 className="display-4">Library</h1>
+                </div>
+            </section>
+            <div className="py-5">
+                <main className="container">
+                    <div className="text-right mb-3">
+                        Manage your books
+                    </div>
+                    <Link to="/addBooks" className="btn btn-link">
+                        create books
+                    </Link>
+                    <Link to="/" className="btn btn-link">
+                        Home
+            </Link>
+                </main>
+            </div>
+        </>)
+    }
+}
+
+export default Library;
\ No newline at end of file

app/javascript/routes/Index.jsx

@@ -7,6 +7,10 @@ import NewRecipe from "../components/NewRecipe";
 import Employees from "../components/Employees";
 import Employee from "../components/Employee";
 import NewEmployee from "../components/NewEmployee";
+import Library from '../components/library/Library';
+import AddBooks from '../components/library/AddBooks';
+import BooksList from '../components/library/BooksList';
+import BookDetails from "../components/library/BookDetails";
 
 export default (
   <Router>
@@ -18,6 +22,10 @@ export default (
       <Route path="/employees" exact component={Employees} />
       <Route path="/employee/:id" exact component={Employee} />
       <Route path="/employee" exact component={NewEmployee} />
+      <Route path="/library" exact component={Library} />
+      <Route path="/addBooks" exact component={AddBooks} />
+      <Route path="/booksList" exact component={BooksList}/>
+      <Route path="/bookDetails" exact component={BookDetails}/>
     </Switch>
   </Router>
 );
\ No newline at end of file

app/models/book.rb

+class Book < ApplicationRecord
+    validates :name, presence: true
+    validates :writterName, presence: true
+    validates :courseName, presence: true
+end

app/models/employee.rb

 class Employee < ApplicationRecord
+    puts "ttt"
     validates :firstName, presence: true
     validates :lastName, presence: true
     validates :email, presence: true

config/routes.rb

 Rails.application.routes.draw do
   namespace :api do
     namespace :v1 do
+      get 'books/index'
+      post 'books/create'
+      get 'book/search/:name', to: 'books#search'
+      get 'book/show/:id', to: 'books#show'
+      get 'book/update/:id', to: 'books#update'
+      delete 'book/destroy/:id', to: 'books#destroy'
+    end
+  end
+  namespace :api do
+    namespace :v1 do
       get 'employees/index'
       post 'employees/create'
       get 'employee/show/:id', to: 'employees#show'
@@ -17,6 +27,7 @@ Rails.application.routes.draw do
       post 'recipes/uploadFile'
     end
   end
+
   root 'homepage#index'
   get '/*path' => 'homepage#index'
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html

db/migrate/20201002112159_create_books.rb

+class CreateBooks < ActiveRecord::Migration[5.2]
+  def change
+    create_table :books do |t|
+      t.string :name
+      t.string :writterName
+      t.text :courseName
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,11 +10,19 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_09_30_024252) do
+ActiveRecord::Schema.define(version: 2020_10_02_112159) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
+  create_table "books", force: :cascade do |t|
+    t.string "name"
+    t.string "writterName"
+    t.text "courseName"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "employees", force: :cascade do |t|
     t.string "firstName", null: false
     t.string "lastName", null: false

package.json

@@ -15,6 +15,7 @@
     "prop-types": "^15.7.2",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
+    "react-router": "^5.2.0",
     "react-router-dom": "^5.2.0"
   },
   "devDependencies": {

spec/models/book_spec.rb

+require 'rails_helper'
+
+RSpec.describe Book, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/requests/api/v1/book_request_spec.rb

+require 'rails_helper'
+
+RSpec.describe "Api::V1::Books", type: :request do
+
+  describe "GET /index" do
+    it "returns http success" do
+      get "/api/v1/book/index"
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe "GET /create" do
+    it "returns http success" do
+      get "/api/v1/book/create"
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe "GET /show" do
+    it "returns http success" do
+      get "/api/v1/book/show"
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe "GET /destroy" do
+    it "returns http success" do
+      get "/api/v1/book/destroy"
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+end

yarn.lock

@@ -7493,7 +7493,7 @@ react-router-dom@^5.2.0:
     tiny-invariant "^1.0.2"
     tiny-warning "^1.0.0"
 
-react-router@5.2.0:
+react-router@5.2.0, react-router@^5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/react-router/-/react-router-5.2.0.tgz#424e75641ca8747fbf76e5ecca69781aa37ea293"
   integrity sha512-smz1DUuFHRKdcJC0jobGo8cVbhO3x50tCL4icacOlcwDOEQPq4TMqwx3sY1TP+DvtTgz4nm3thuo7A+BK2U0Dw==