Flask-Admin Export CSV

export.py

from flask import send_file
from pandas import DataFrame
class MyModelView(ModelView):
  @expose('/export')
  def export(self):
    # Grab parameters from URL
    page, sort_idx, sort_desc, search, filters = self._get_list_extra_args()
    sort_column = self._get_column_by_idx(sort_idx)
    if sort_column is not None:
    sort_column = sort_column[0]
    # Get count and data
    page_size_temp = self.page_size
    # unset page size for export
    self.page_size = None 
    # get rows with filters applied
    count, data = self.get_list(None, sort_column, sort_desc, search, filters) 
    self.page_size = page_size_temp # reset pagesize to original value
    dicts = [rec.__dict__ for rec in data]
    # explicitly set columns, not necessary, however it will be out of order otherwise
    df = DataFrame.from_records(dicts, columns=[u'id',u'title']) 
    # use stringio for temp file
    buffer = StringIO.StringIO() 
    # formatted header
    df.to_csv(buffer,encoding='utf-8', header=[u'id',u'Title']) 
    buffer.seek(0)
    filename = "export_" + datetime.datetime.now().strftime("%Y_%m_%d_%H_%M") + ".csv"
    return send_file(buffer, attachment_filename=filename, as_attachment=True, mimetype='text/csv') 

list.html

<li>
<a id="exportButton" href="{{ request.path ~ 'export?' ~ request.query_string }}">Export CSV</a>
</li>

2020: Set BaseModelView.can_export = True