Exporting table data

New in version 1.8.0.

If you want to allow exporting the data present in your django-tables2 tables to various formats, you must install the tablib package:

pip install tablib

Adding ability to export the table data to a class based views looks like this:

import django_tables2 as tables
from django_tables2.export.views import ExportMixin

from .models import Person
from .tables import MyTable

class TableView(ExportMixin, tables.SingleTableView):
    table_class = MyTable
    model = Person
    template_name = 'django_tables2/bootstrap.html'

Now, if you append _export=csv to the querystring, the browser will download a csv file containing your data. Supported export formats are:

csv, json, latex, ods, tsv, xls, xlsx, yml

To customize the name of the query parameter add an export_trigger_param attribute to your class.

By default, the file will be named table.ext, where ext is the requested export format extension. To customize this name, add a export_name attribute to your class. The correct extension will be appended automatically to this value.

If you must use a function view, you might use something like this:

from django_tables2.config import RequestConfig
from django_tables2.export.export import TableExport

from .models import Person
from .tables import MyTable

def table_view(request):
    table = MyTable(Person.objects.all())

    RequestConfig(request).configure(table)

    export_format = request.GET.get('_export', None)
    if TableExport.is_valid_format(export_format):
        exporter = TableExport(export_format, table)
        return exporter.response('table.{}'.format(export_format))

    return render(request, 'table.html', {
        'table': table
    })

What exacly is exported?

The export views use the Table.as_values() method to get the data from the table. Because we often use HTML in our table cells, we need to specify something else for the export to make sense.

If you use Table.render_foo methods-methods to customize the output for a column, you should define a Table.value_foo methods-method, returning the value you want to be exported.

If you are creating your own custom columns, you should know that each column defines a value() method, which is used in Table.as_values(). By default, it just calls the render() method on that column. If your custom column produces HTML, you should override this method and return the actual value.

Excluding columns

Certain columns do not make sense while exporting data: you might show images or have a column with buttons you want to exclude from the export. You can define the columns you want to exclude in several ways:

# exclude a column while defining Columns on a table:
class Table(tables.Table):
    name = columns.Column()
    buttons = columns.TemplateColumn(template_name='...', exclude_from_export=True)


# exclude columns while creating the TableExport instance:
exporter = TableExport('csv', table, exclude_columns=('image', 'buttons'))

If you use the ~.ExportMixin, add an exclude_columns attribute to your class:

class TableView(ExportMixin, tables.SingleTableView):
    table_class = MyTable
    model = Person
    template_name = 'django_tables2/bootstrap.html'
    exclude_column = ('buttons', )

Generating export urls

You can use the querystring template tag included with django_tables2 to render a link to export the data as csv:

{% querystring '_export'='csv' %}

This will make sure any other query string parameters will be preserved, for example in combination when filtering table items.

If you want to render more than one button, you could use something like this:

{% for format in table.export_formats %}
    <a href="{% querystring '_export'=format %}">
        download  <code>.{{ format }}</code>
    </a>
{% endfor %}

Note

This example assumes you define a list of possible export formats on your table instance in attribute export_formats