Install Fastapi
https://github.com/tiangolo/fastapi
pip install fastapi
C:\fastAPI\uploadajax>pip install fastapi
C:\fastAPI\uploadajax>pip install "uvicorn[standard]"
Install sqlalchemy jinja2
pip install python-multipart sqlalchemy jinja2
C:\fastAPI\uploadajax>pip install python-multipart sqlalchemy jinja2
Create main.py
uploadajax/main.py
#uploadajax/main.py
from typing import Union
from fastapi import FastAPI, Request, UploadFile, File
from fastapi.responses import HTMLResponse
from fastapi.templating import Jinja2Templates
IMAGEDIR = "images/"
app = FastAPI()
templates = Jinja2Templates(directory="templates")
@app.get('/', response_class=HTMLResponse)
def home(request: Request):
return templates.TemplateResponse("index.html", {"request": request})
@app.post('/uploadfile', response_class=HTMLResponse)
async def post_basic_form(request: Request, file: UploadFile = File(...)):
print(f'Filename: {file.filename}')
contents = await file.read()
#save the file
with open(f"{IMAGEDIR}{file.filename}", "wb") as f:
f.write(contents)
return templates.TemplateResponse('success.html', context={'request': request})
make templates inside the templates directory The jQuery Form Plugin allows you to easily and unobtrusively upgrade HTML forms to use AJAX.
https://github.com/jquery-form/form
uploadajax/templates/base.html
//uploadajax/templates/base.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>FastAPI Jinja2 File Upload Progress Bar using JQuery Ajax - Cairocoders</title>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery.form/4.3.0/jquery.form.min.js"></script>
</head>
<body>
<div class="container">
<h1 class="page-header text-center">FastAPI Jinja2 File Upload Progress Bar using JQuery Ajax</h1>
{% block content %}
{% endblock content %}
</div>
</body>
</html>
uploadajax/templates/index.html
//uploadajax/templates/index.html
{% extends 'base.html' %}
{% block content %}
<div class="panel panel-default" style="margin-top: 50px;">
<div class="panel-heading"><b>FastAPI Jinja2 File Upload Progress Bar using JQuery Ajax</b></div>
<div class="panel-body">
<form id="uploadImage" method="post" action="/uploadfile" enctype="multipart/form-data">
<div class="form-group">
<label>File Upload</label>
<input type="file" name="file" multiple="true" id="file" />
</div>
<div class="form-group">
<input type="submit" id="uploadSubmit" value="Upload" class="btn btn-info" />
</div>
<div class="progress">
<div class="progress-bar progress-bar-striped bg-success" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100"></div>
</div>
<div id="targetLayer" style="display:none;"></div>
</form>
</div>
</div>
<script>
$(document).ready(function(){
$('#uploadImage').submit(function(event){
if($('#file').val()){
event.preventDefault();
$('#targetLayer').hide();
$(this).ajaxSubmit({
target: '#targetLayer',
beforeSubmit:function(){
$('.progress-bar').width('50%');
},
uploadProgress: function(event, position, total, percentageComplete)
{
$('.progress-bar').animate({
width: percentageComplete + '%'
}, {
duration: 1000
});
},
success:function(data){ //alert(data);
$('#targetLayer').show();
$('#targetLayer').append(data.htmlresponse);
},
resetForm: true
});
}
return false;
});
});
</script>
{% endblock content %}
uploadajax/templates/success.html
//uploadajax/templates/success.html <h4>File successfully uploaded to /images!</h4>run the FastAPI app
C:\fastAPI\uploadajax>uvicorn main:app --reload
with uvicorn using the file_name:app_instance
open the link on the browser http://127.0.0.1:8000/
http://127.0.0.1:8000/docs
