Handling file uploads
Genie has built-in support for working with file uploads. The collection of uploaded files (as
POST variables) can be accessed through the
Requests.filespayload method. Or, we can retrieve the data corresponding to a given file form input by using
Requests.filespayload(key) – where
key is the name of the file input in the form.
In the following snippet we configure two routes in the root of the app (
/): the first route, handling
GET requests, displays an upload form. The second route, handling
POST requests, processes the uploads, generating a file from the uploaded data, saving it, and displaying the file stats.
Notice that we can define multiple routes at the same URL if they have different methods, in our case
using Genie, Genie.Router, Genie.Renderer.Html, Genie.Requests form = """ <form action="/" method="POST" enctype="multipart/form-data"> <input type="file" name="yourfile" /><br/> <input type="submit" value="Submit" /> </form> """ route("/") do html(form) end route("/", method = POST) do if infilespayload(:yourfile) write(filespayload(:yourfile)) stat(filename(filespayload(:yourfile))) else "No file uploaded" end end up()
Upon uploading a file and submitting the form, our app will display the file's stats.