Exercise 2.11

part2/phonebook/db.json

@@ -0,0 +1,24 @@
+{
+  "persons":[
+    { 
+      "name": "Arto Hellas", 
+      "number": "040-123456",
+      "id": 1
+    },
+    { 
+      "name": "Ada Lovelace", 
+      "number": "39-44-5323523",
+      "id": 2
+    },
+    { 
+      "name": "Dan Abramov", 
+      "number": "12-43-234345",
+      "id": 3
+    },
+    { 
+      "name": "Mary Poppendieck", 
+      "number": "39-23-6423122",
+      "id": 4
+    }
+  ]
+}

part2/phonebook/package.json

@@ -6,6 +6,7 @@
     "@testing-library/jest-dom": "^5.16.4",
     "@testing-library/react": "^13.3.0",
     "@testing-library/user-event": "^13.5.0",
+    "axios": "^0.27.2",
     "react": "^18.1.0",
     "react-dom": "^18.1.0",
     "react-scripts": "5.0.1",
@@ -15,7 +16,8 @@
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
-    "eject": "react-scripts eject"
+    "eject": "react-scripts eject",
+    "server": "json-server -p3001 --watch db.json"
   },
   "eslintConfig": {
     "extends": [
@@ -34,5 +36,8 @@
       "last 1 firefox version",
       "last 1 safari version"
     ]
+  },
+  "devDependencies": {
+    "json-server": "^0.17.0"
   }
 }

part2/phonebook/src/App.js

@@ -1,4 +1,5 @@
-import { useState } from 'react'
+import { useState, useEffect } from 'react'
+import axios from 'axios'
 
 import Filter from './components/Filter'
 import Form from './components/Form'
@@ -6,12 +7,11 @@ import Numbers from './components/Numbers'
 
 const App = () => {
   const [filter, setFilter] = useState('')
-  const [persons, setPersons] = useState([
+  const [persons, setPersons] = useState([])
-    { name: 'Arto Hellas', number: '040-123456', id: 1 },
+
-    { name: 'Ada Lovelace', number: '39-44-5323523', id: 2 },
+  useEffect(() => axios
-    { name: 'Dan Abramov', number: '12-43-234345', id: 3 },
+      .get('http://localhost:3001/persons')
-    { name: 'Mary Poppendieck', number: '39-23-6423122', id: 4 }
+      .then(response => setPersons(response.data)), []);
-  ])
 
   return (
     <div>

part2/phonebook/src/index.js

@@ -1,4 +1,4 @@
-import React from 'react';
+import * as React from 'react';
 import ReactDOM from 'react-dom/client';
 
 import App from './App';