How to put Python list with Flask into a HTML select options?

Question

So, let's say that I have this list written on my main Flask app:

calculations = ['Summary', 'Average', 'Minimal Value', 'Maximum Value', 'Median', 'Count', 'Standard Deviation']

I have a template which goes like this:

@app.route('/analyze.html')
def analyze():
    return render_template('analyze.html', name=calculations)

And on the template, I wrote:

<select class="form-control" name="calculations">
    {% for calc in calculations %}
        <option value="{{ calc }}">{{ calc }}</option>
    {% endfor %}
</select>

I want to show the calculations list into the select options on the HTML template so it can chooses one of the calculations. When I tried this way, it displayed nothing on the option list.

How should i do this?

Don't you mean calculations=calculations?

jonrsharpe
– jonrsharpe

2017-05-21 12:28:50 +00:00
Commented May 21, 2017 at 12:28 — jonrsharpe
– jonrsharpe, Commented May 21, 2017 at 12:28

Mike Porter · Accepted Answer · 2017-05-21 12:30:51Z

3

It looks like you're assigning the list to a variable named 'name' in the route. You should change

return render_template('analyze.html', name=calculations)

to be

return render_template('analyze.html', calculations=calculations)

answered May 21, 2017 at 12:30

Mike Porter

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1 Comment

Rully Setiawan Over a year ago

Omg, I didn't notice it before. This is the kind of error i hate. Thanks!

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