Add Fetch to Display, Add, and Delete Questions

db.json

@@ -1,40 +1,59 @@
 {
   "questions": [
-    {
-      "id": 1,
-      "prompt": "What special prop should always be included for lists of elements?",
-      "answers": ["id", "name", "key", "prop"],
-      "correctIndex": 2
-    },
     {
       "id": 2,
       "prompt": "A React component is a function that returns ______.",
-      "answers": ["HTML", "JSX", "props", "state"],
+      "answers": [
+        "HTML",
+        "JSX",
+        "props",
+        "state"
+      ],
       "correctIndex": 1
     },
     {
       "id": 3,
       "prompt": "Which event handler will run when a user is finished filling out a form?",
-      "answers": ["onSubmit", "onClick", "onChange", "onForm"],
+      "answers": [
+        "onSubmit",
+        "onClick",
+        "onChange",
+        "onForm"
+      ],
       "correctIndex": 0
     },
     {
       "id": 4,
       "prompt": "______ is a tool that transpiles JSX into valid JavaScript.",
-      "answers": ["React", "Babel", "Webpack", "ES6"],
+      "answers": [
+        "React",
+        "Babel",
+        "Webpack",
+        "ES6"
+      ],
       "correctIndex": 1
     },
     {
       "id": 5,
       "prompt": "What syntax makes it possible to unpack values from arrays, or properties from objects, into distinct variables?",
-      "answers": ["spread", "key-value", "coalescing", "destructuring"],
+      "answers": [
+        "spread",
+        "key-value",
+        "coalescing",
+        "destructuring"
+      ],
       "correctIndex": 3
     },
     {
       "id": 6,
       "prompt": "Returning different elements from a component depending on the state of your application is known as _____ rendering.",
-      "answers": ["voodoo", "conditional", "reactive", "controlled"],
+      "answers": [
+        "voodoo",
+        "conditional",
+        "reactive",
+        "controlled"
+      ],
       "correctIndex": 1
     }
   ]
-}
+}

src/components/App.js

@@ -5,11 +5,12 @@ import QuestionList from "./QuestionList";
 
 function App() {
   const [page, setPage] = useState("List");
+  const [allQuestions, setAllQuestions] = useState([])
 
   return (
     <main>
       <AdminNavBar onChangePage={setPage} />
-      {page === "Form" ? <QuestionForm /> : <QuestionList />}
+      {page === "Form" ? <QuestionForm /> : <QuestionList allQuestions={allQuestions} setAllQuestions={setAllQuestions}/>}
     </main>
   );
 }

src/components/QuestionForm.js

@@ -1,6 +1,6 @@
-import React, { useState } from "react";
+import React, { useEffect, useState } from "react";
 
-function QuestionForm(props) {
+function QuestionForm() {
   const [formData, setFormData] = useState({
     prompt: "",
     answer1: "",
@@ -18,8 +18,27 @@ function QuestionForm(props) {
   }
 
   function handleSubmit(event) {
+    const {prompt, answer1, answer2, answer3, answer4, correctIndex} = formData
+    const newQuestionInfo = {
+      'prompt': prompt,
+      "answers": [answer1, answer2, answer3, answer4],
+      'correctIndex': correctIndex
+    }
+
     event.preventDefault();
-    console.log(formData);
+    const options = {
+      method: 'POST',
+      headers:
+        {
+          "Content-Type": "application/json",
+          Accept: "application/json"
+        },
+      body: JSON.stringify(newQuestionInfo)
+    }
+
+    fetch('http://localhost:4000/questions', options)
+    .then(r => r.json())
+    .then(r => console.log(r));
   }
 
   return (

src/components/QuestionItem.js

@@ -9,6 +9,20 @@ function QuestionItem({ question }) {
     </option>
   ));
 
+  const handleDelete = (e) => {
+    const options = {
+      method: 'DELETE',
+      headers:
+      {
+        "Content-Type": "application/json",
+        Accept: "application/json"
+      }
+    }
+    fetch(`http://localhost:4000/questions/${id}`, options)
+    .then(_resp => e.target.parentElement.remove())
+  }
+
+
   return (
     <li>
       <h4>Question {id}</h4>
@@ -17,7 +31,7 @@ function QuestionItem({ question }) {
         Correct Answer:
         <select defaultValue={correctIndex}>{options}</select>
       </label>
-      <button>Delete Question</button>
+      <button onClick={handleDelete}>Delete Question</button>
     </li>
   );
 }

src/components/QuestionList.js

@@ -1,10 +1,24 @@
-import React from "react";
+import React, {useEffect} from "react";
+import QuestionItem from "./QuestionItem";
+
+function QuestionList({allQuestions, setAllQuestions}) {
+
+  useEffect(() => {
+    fetch('http://localhost:4000/questions')
+    .then(r => r.json())
+    .then(r=> setAllQuestions(r))
+  }, [])
+
+  const displayQuestions = () => {
+    return(
+      allQuestions.map(question => <QuestionItem key={question.id} question={question} />)
+    )
+  }
 
-function QuestionList() {
   return (
     <section>
       <h1>Quiz Questions</h1>
-      <ul>{/* display QuestionItem components here after fetching */}</ul>
+      <ul>{displayQuestions()}</ul>
     </section>
   );
 }