Modifying HTTP headers in an Inertia.js Laravel application

When you return an Inertia response using Inertia::render(), it doesn't return a standard Laravel response object directly. Instead, it returns an instance of Inertia\Response, which is then converted to a standard Laravel response when it's actually sent back to the client.

Modifying Headers in an Inertia Response

To modify headers in an Inertia response, you need to:

  1. Create an Inertia Response: First, create your Inertia response using Inertia::render().
  2. Convert to Laravel Response: Convert the Inertia response to a standard Laravel response using the toResponse() method. This method takes the current request as an argument and converts the Inertia response to a Laravel response.
  3. Modify Headers: Once you have the Laravel response, you can modify its headers using the headers->set() method.
  4. Return the Response: Finally, return the modified response.

Example Controller

Here's an example of a Laravel controller method that modifies headers in an Inertia response:

<span class="hljs-keyword">use</span> <span class="hljs-title">Inertia</span>\<span class="hljs-title">Inertia</span>;

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ExampleController</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Controller</span>
    <span class="hljs-keyword">public</span> <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">show</span><span class="hljs-params">()</span>
        <span class="hljs-comment">// Step 1: Create an Inertia response</span>
        $inertiaResponse = Inertia::render(<span class="hljs-string">'ExampleComponent'</span>, [
            <span class="hljs-string">'data'</span> => <span class="hljs-string">'some data'</span>

        <span class="hljs-comment">// Step 2: Convert the Inertia response to a Laravel response</span>
        $response = $inertiaResponse->toResponse(request());

        <span class="hljs-comment">// Step 3: Modify the headers</span>
        $response->headers->set(<span class="hljs-string">'Cache-Control'</span>, <span class="hljs-string">'no-cache, no-store, must-revalidate'</span>);
        $response->headers->set(<span class="hljs-string">'Pragma'</span>, <span class="hljs-string">'no-cache'</span>);
        $response->headers->set(<span class="hljs-string">'Expires'</span>, <span class="hljs-string">'0'</span>);

        <span class="hljs-comment">// Step 4: Return the response</span>
        <span class="hljs-keyword">return</span> $response;

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