import axios from 'axios'; const downloadFile = async (id, fileName) => { try { const response = await axios.get(`/api/documents/${id}`, { responseType: 'blob', // CRITICAL: Tells Axios to handle binary data }); // 1. Create a temporary URL for the binary data const url = window.URL.createObjectURL(new Blob([response.data])); // 2. Create a hidden anchor element to trigger the download const link = document.createElement('a'); link.href = url; link.setAttribute('download', fileName); // Suggests a filename to the browser document.body.appendChild(link); link.click(); // 3. Clean up to prevent memory leaks link.remove(); window.URL.revokeObjectURL(url); } catch (error) { console.error("Download failed", error); } }; Use code with caution. Summary of Best Practices
Your controller must return a proper download response with standard HTTP headers. download file vue laravel
public function download($id) { $file = Document::findOrFail($id); $path = storage_path('app/' . $file->path); // Ensure the file exists before attempting download return response()->download($path, $file->name, [ 'Content-Type' => $file->mime_type, ]); } Use code with caution. import axios from 'axios'; const downloadFile = async
Ajax requests (like those from Axios) cannot directly trigger a browser's "Save As" dialog. To download a file, you must either redirect the browser to a direct URL or process the API's binary data as a in JavaScript. Step 1: Laravel Backend Setup Clean up to prevent memory leaks link
: Automatically sets the Content-Disposition header to attachment , forcing the browser to download rather than display the file. Step 2: Vue.js Frontend (The Axios Approach)
When your file is protected by authentication (like Laravel Sanctum ), you must use Axios to include auth tokens or session cookies in the request. javascript
Implementing file downloads in a Vue and Laravel stack requires bridging the gap between an asynchronous API and the browser's native download behavior. The Core Challenge