- Author:
- anentropic
- Posted:
- May 14, 2010
- Language:
- Python
- Version:
- 1.1
- Score:
- 2 (after 2 ratings)
I've since made a better snippet for this: #2995
based on #1697
This one is even more generic since you can specify which fields to include or exclude, a custom description text for the drop-down menu and whether to output the header row.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | import csv
from django.http import HttpResponse
def export_as_csv_action(description="Export selected objects as CSV file",
fields=None, exclude=None, header=True):
"""
This function returns an export csv action
'fields' and 'exclude' work like in django ModelForm
'header' is whether or not to output the column names as the first row
"""
def export_as_csv(modeladmin, request, queryset):
"""
Generic csv export admin action.
based on http://djangosnippets.org/snippets/1697/
"""
opts = modeladmin.model._meta
field_names = set([field.name for field in opts.fields])
if fields:
fieldset = set(fields)
field_names = field_names & fieldset
elif exclude:
excludeset = set(exclude)
field_names = field_names - excludeset
response = HttpResponse(mimetype='text/csv')
response['Content-Disposition'] = 'attachment; filename=%s.csv' % unicode(opts).replace('.', '_')
writer = csv.writer(response)
if header:
writer.writerow(field_names)
for obj in queryset:
writer.writerow([unicode(getattr(obj, field)).encode('utf-8') for field in field_names])
return response
export_as_csv.short_description = description
return export_as_csv
# example usage:
class SubscriberAdmin(admin.ModelAdmin):
raw_id_fields = ('logged_in_as',)
list_display = ('email', 'date', 'logged_in_as',)
actions = [export_as_csv_action("Export selected emails as CSV file", fields=['email'], header=False),]
admin.site.register(UpdatesSubscriber, SubscriberAdmin)
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Comments
Minor fix
Replace: writer.writerow(field_names) with: writer.writerow(list(field_names))
#
Another fix to support unicode fields:
Replace:
writer.writerow([unicode(getattr(obj, field)) for field in field_names])
To:
writer.writerow([unicode(getattr(obj, field)).encode("utf-8") for field in field_names])
#
How could this be adapted to show values from foreignkeys? For example, in line 44:
fields=['email', 'fkfield__fieldname']
#
@hotchip<br /> I don't see that fix is necessary?
#
@nukeador<br /> good tip, yes seems to need that
#
@hotchip Thanks for that fix. The action did not work without your modification.
#
Is there anyway to export a field from the last row of an Inline class?
#
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