CODEWITHSUNDEEP
jsondatetemplatesflask
Jasqier346
Jasqier346

Reputation: 17

How to modify date in flask from JSON format

I'm passing date directly from JSON to a template, but I cannot modify how it should be displayed. I'd like to display DD.MM.YYYY but it displays directly from JSON format (2020-08-05T00:00:00) I've tried using a custom filter but it gives a bunch of errors.

Edit JSON

"startDate": "2020-07-07T00:00:00"

app.py

@app.route('/generate', methods=['POST'])
def generate_pdf():
    return render_to_pdf(request.json)

def render_to_pdf(context_dict):
    templateLoader = jinja2.FileSystemLoader(searchpath="./templates/")
    templateEnv = jinja2.Environment(loader=templateLoader)
    TEMPLATE_FILE = "pdf_template.html"
    template = templateEnv.get_template(TEMPLATE_FILE)
    html = template.render(context_dict)

Upvotes: 1

Views: 1103

Answers (2)

c8999c 3f964f64
c8999c 3f964f64

Reputation: 1627

strftime converts a date object into a string by specifying a format you want to use

you can do

now = datetime.now() # <- datetime object
now_string = now.strftime('%d.%m.%Y')

however, if you already converted your datetime object into a string (or getting strings from an api or something), you can convert the string back to a datetime object using strptime

date_string = '2020-08-05T00:00:00'
date_obj = strptime(date_string, '%Y-%m-%dT%H:%M:%S')  # <- the format the string is currently in

You can first to strptime and then strftime directly from that to effectively convert a string into a different string, but you should avoid this if possible

converted_string = strptime(original_string, 'old_format').strftime('new_format')

This topic may be confusing because when you print(now) (remember, the datetime object), python automatically "represents" this and converts it into a string. however, it isnt actually a string at this time, but rather a datetime object. python can't print that, so it converts it - but you wont be able to jsonify this directly, for example.

Upvotes: 0

Rithik Banerjee
Rithik Banerjee

Reputation: 467

{{ json.Date.strftime('%Y-%m-%d') }}

Upvotes: 1

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