Flask Custom Jinja2 Template Filters Format datetime in a Jinja2 template
Example
Filters can either be defined in a method and then added to Jinja's filters dictionary, or defined in a method decorated with Flask.template_filter.
Defining and registering later:
def format_datetime(value, format="%d %b %Y %I:%M %p"):
"""Format a date time to (Default): d Mon YYYY HH:MM P"""
if value is None:
return ""
return value.strftime(format)
# Register the template filter with the Jinja Environment
app.jinja_env.filters['formatdatetime'] = format_datetime
Defining with decorator:
@app.template_filter('formatdatetime')
def format_datetime(value, format="%d %b %Y %I:%M %p"):
"""Format a date time to (Default): d Mon YYYY HH:MM P"""
if value is None:
return ""
return value.strftime(format)
