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<!DOCTYPE html>
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<title>Day 4: PUT & DELETE Requests - REST API Course</title>
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<h1 class="text-4xl font-bold mb-6">Day 4: PUT & DELETE Requests</h1>
<div class="bg-white rounded-lg shadow-lg p-6 mb-8">
<h2 class="text-2xl font-semibold mb-4">PUT Requests</h2>
<p class="mb-4">
PUT requests are used to update existing resources. They are idempotent, meaning multiple identical requests should have the same effect as a single request.
</p>
<h3 class="text-xl font-semibold mb-2">Key Characteristics:</h3>
<ul class="list-disc pl-6 space-y-2 mb-4">
<li>Updates the entire resource</li>
<li>Requires the complete resource representation</li>
<li>Idempotent (safe to retry)</li>
<li>Returns 200 OK or 204 No Content on success</li>
</ul>
<h3 class="text-xl font-semibold mb-2">Example PUT Request:</h3>
<pre><code>PUT https://jsonplaceholder.typicode.com/posts/1
Content-Type: application/json
{
"id": 1,
"title": "Updated Post",
"body": "This post has been updated",
"userId": 1
}</code></pre>
</div>
<div class="bg-white rounded-lg shadow-lg p-6 mb-8">
<h2 class="text-2xl font-semibold mb-4">DELETE Requests</h2>
<p class="mb-4">
DELETE requests are used to remove resources from the server. Like PUT, they are also idempotent.
</p>
<h3 class="text-xl font-semibold mb-2">Key Characteristics:</h3>
<ul class="list-disc pl-6 space-y-2 mb-4">
<li>Removes the specified resource</li>
<li>Idempotent (safe to retry)</li>
<li>Returns 204 No Content on success</li>
<li>May return 404 if resource doesn't exist</li>
</ul>
<h3 class="text-xl font-semibold mb-2">Example DELETE Request:</h3>
<pre><code>DELETE https://jsonplaceholder.typicode.com/posts/1</code></pre>
</div>
<div class="bg-white rounded-lg shadow-lg p-6 mb-8">
<h2 class="text-2xl font-semibold mb-4">PUT vs PATCH</h2>
<div class="overflow-x-auto">
<table class="min-w-full">
<thead>
<tr class="bg-gray-100">
<th class="py-2 px-4">Feature</th>
<th class="py-2 px-4">PUT</th>
<th class="py-2 px-4">PATCH</th>
</tr>
</thead>
<tbody>
<tr>
<td class="py-2 px-4">Purpose</td>
<td class="py-2 px-4">Update entire resource</td>
<td class="py-2 px-4">Update partial resource</td>
</tr>
<tr>
<td class="py-2 px-4">Data Required</td>
<td class="py-2 px-4">Complete resource</td>
<td class="py-2 px-4">Only changed fields</td>
</tr>
<tr>
<td class="py-2 px-4">Idempotent</td>
<td class="py-2 px-4">Yes</td>
<td class="py-2 px-4">Not necessarily</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="bg-white rounded-lg shadow-lg p-6">
<h2 class="text-2xl font-semibold mb-4">Practical Exercise</h2>
<p class="mb-4">Using Insomnia, practice PUT and DELETE requests:</p>
<ol class="list-decimal pl-6 space-y-2">
<li>Create a new post using POST</li>
<li>Update the post using PUT</li>
<li>Delete the post using DELETE</li>
<li>Try to update a non-existent post</li>
<li>Try to delete a non-existent post</li>
</ol>
</div>
<div class="bg-white rounded-lg shadow-lg p-6 mb-8">
<h2 class="text-2xl font-semibold mb-4">Practice Questions</h2>
<div class="space-y-6">
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<h3 class="text-xl font-semibold text-blue-800 mb-2">Multiple Choice</h3>
<div class="space-y-4">
<div class="p-3 bg-white rounded shadow">
<p class="font-semibold mb-2">1. Which HTTP method is used to completely replace a resource?</p>
<div class="space-y-2">
<label class="flex items-center">
<input type="radio" name="q1" class="mr-2">
A. PATCH
</label>
<label class="flex items-center">
<input type="radio" name="q1" class="mr-2">
B. PUT
</label>
<label class="flex items-center">
<input type="radio" name="q1" class="mr-2">
C. POST
</label>
</div>
</div>
<div class="p-3 bg-white rounded shadow">
<p class="font-semibold mb-2">2. What is the typical response code for a successful DELETE request?</p>
<div class="space-y-2">
<label class="flex items-center">
<input type="radio" name="q2" class="mr-2">
A. 200 OK
</label>
<label class="flex items-center">
<input type="radio" name="q2" class="mr-2">
B. 204 No Content
</label>
<label class="flex items-center">
<input type="radio" name="q2" class="mr-2">
C. 201 Created
</label>
</div>
</div>
</div>
</div>
<div class="bg-green-50 p-4 rounded-lg">
<h3 class="text-xl font-semibold text-green-800 mb-2">True/False</h3>
<div class="space-y-4">
<div class="p-3 bg-white rounded shadow">
<p class="font-semibold mb-2">3. PUT requests are idempotent.</p>
<div class="space-y-2">
<label class="flex items-center">
<input type="radio" name="q3" class="mr-2">
True
</label>
<label class="flex items-center">
<input type="radio" name="q3" class="mr-2">
False
</label>
</div>
</div>
<div class="p-3 bg-white rounded shadow">
<p class="font-semibold mb-2">4. DELETE requests can have a request body.</p>
<div class="space-y-2">
<label class="flex items-center">
<input type="radio" name="q4" class="mr-2">
True
</label>
<label class="flex items-center">
<input type="radio" name="q4" class="mr-2">
False
</label>
</div>
</div>
</div>
</div>
<div class="bg-purple-50 p-4 rounded-lg">
<h3 class="text-xl font-semibold text-purple-800 mb-2">Practical Exercise</h3>
<div class="space-y-4">
<div class="p-3 bg-white rounded shadow">
<p class="font-semibold mb-2">5. Using Insomnia, perform the following tasks:</p>
<div class="space-y-2">
<p class="text-sm text-gray-600">a) Make a PUT request to https://jsonplaceholder.typicode.com/posts/1 with the following body:</p>
<pre class="bg-gray-100 p-2 rounded text-sm">{
"title": "Updated Title",
"body": "Updated body content",
"userId": 1
}</pre>
<p class="text-sm text-gray-600">What status code did you receive?</p>
<input type="number" class="border rounded p-2 w-24" placeholder="Status code">
<p class="text-sm text-gray-600">b) Make a DELETE request to https://jsonplaceholder.typicode.com/posts/1</p>
<input type="number" class="border rounded p-2 w-24" placeholder="Status code">
</div>
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