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How to render a template and send a file simultaneously with flask


How to render a template and send a file simultaneously with flask

By : Minte
Date : October 25 2020, 04:08 PM
I hope this helps you . Short answer: No. You cannot return different responses at once, obviously.
The quick and dirty solution would be to return the HTML response with your "waiting.html" template, and from this template add some javascript to launch the download.
code :


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Render partial view on the server or send json data and render template on the client

Render partial view on the server or send json data and render template on the client


By : Sinisa Maksic Maksa
Date : March 29 2020, 07:55 AM
should help you out This is actually a really interesting question, because it exposes some interesting design decisions.
I prefer rendering partial templates because it gives my applications the ability to change with time. If I need to change from a to a
with a chart, it's easy to encapsulate that in a template. With that in mind, I view almost every page as a aggregate of many small templates, which could change. Grails 2.0 default scaffolding has moved towards this type of approach, and it's a good idea.
How to use flask.jsonify and render a template in a flask route

How to use flask.jsonify and render a template in a flask route


By : Sandhya
Date : March 29 2020, 07:55 AM
wish of those help
If you need return different response objects in one route for different cases: render_template return unicode that transform to valid Response and jsonify return already Response object, so you can use both in same route:
code :
@app.route('/thankyou')
def thankyou():
    db = get_db()
    summary_cursor = db.execute('SELECT * FROM orders JOIN order_items USING (transaction_id) WHERE orders.transaction_id = (SELECT MAX(transaction_id) FROM orders)')
    summary = summary_cursor.fetchall()
    data = map(list, summary)
    print data
    if request.args['type'] == 'json':
        return jsonify(summary = data)
    else:
        return render_template('thankyou.html', summary=data))
How to render a WTF Form in flask from a template that is included in another template?

How to render a WTF Form in flask from a template that is included in another template?


By : Crickets734
Date : March 29 2020, 07:55 AM
hop of those help? The way I would do is to have the form passed to home.html via the index() route and include it into your home using {% include "users/register.html" %}, but then register the action of the form to the sign_up() route which processes the form.
This way you keep the display fo the form and the processing of the form on separate routes... then after you process the form in the sign_up() route, you can direct the user to any other page.
Nodejs Express send res.render and res.json simultaneously

Nodejs Express send res.render and res.json simultaneously


By : nhjjzcj
Date : March 29 2020, 07:55 AM
wish help you to fix your issue HTTP uses a cycle that requires one response per request. When the client sends a request the server should send only one response back to client. So that you need to send only one response to the client either res.render() or res.json().
If you like to set some data like authentication token, you can set on your header using res.set() or res.header(). documentation
code :
app.get(basePath, function (req, res, next) {

    //More Stuff ...

    res.header('token', JSON.stringify({ token: 'token' })); //use encrypted token
    res.render(path.join(publicPath, '/main'), { mv: mv });
});
How to render template in Flask with opencv image without writing file to disk?

How to render template in Flask with opencv image without writing file to disk?


By : user2609212
Date : March 29 2020, 07:55 AM
wish helps you You could base64 encode the buffer, it's not pretty, but it should work.
code :
import base64

@app.route('/uploader', methods = ['GET', 'POST'])
def uploaded_file():
    if request.method == 'POST':
    photo = request.files['file']
    in_memory_file = io.BytesIO()
    photo.save(in_memory_file)
    data = np.fromstring(in_memory_file.getvalue(), dtype=np.uint8)
    color_image_flag = 1
    img = cv2.imdecode(data, color_image_flag)
    frame,res=recogn(img)

    imencoded = cv2.imencode(".jpg", frame)[1]

    jpg_as_text = base64.b64encode(imencoded)

    return render_template('from_file.html', photo=jpg_as_text)
<h3><img src="data:image/jpeg;charset=utf-8;base64, {{photo}}" width="50%"></h3>
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