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File upload example

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Miguel Grinberg
2022-09-22 17:52:48 +01:00
parent 4f263c63ab
commit 8ebe81c09b
4 changed files with 69 additions and 0 deletions
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1
examples/uploads/README.md Normal file
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This directory contains file upload examples.

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examples/uploads/files/README.md Normal file
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Uploaded files are saved to this directory.

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examples/uploads/index.html Normal file
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<!doctype html>
<html>
<head>
<title>Microdot Upload Example</title>
</head>
<body>
<h1>Microdot Upload Example</h1>
<form id="form">
<input type="file" id="file" name="file" />
<input type="submit" value="Upload" />
</form>
<script>
async function upload(ev) {
ev.preventDefault();
const file = document.getElementById('file').files[0];
if (!file) {
return;
}
await fetch('/upload', {
method: 'POST',
body: file,
headers: {
'Content-Type': 'application/octet-stream',
'Content-Disposition': `attachment; filename="${file.name}"`,
},
}).then(res => {
console.log('Upload accepted');
window.location.href = '/';
});
}
document.getElementById('form').addEventListener('submit', upload);
</script>
</body>
</html>

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examples/uploads/uploads.py Normal file
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from microdot import Microdot, send_file
app = Microdot()
@app.get('/')
def index(request):
return send_file('index.html')
@app.post('/upload')
def upload(request):
# obtain the filename and size from request headers
filename = request.headers['Content-Disposition'].split(
'filename=')[1].strip('"')
size = int(request.headers['Content-Length'])
# sanitize the filename
filename = filename.replace('/', '_')
# write the file to the files directory in 1K chunks
with open('files/' + filename, 'wb') as f:
while size > 0:
chunk = request.stream.read(min(size, 1024))
f.write(chunk)
size -= len(chunk)
print('Successfully saved file: ' + filename)
return ''
if __name__ == '__main__':
app.run()