django-import-export | Django application library | CSV Processing library
kandi X-RAY | django-import-export Summary
kandi X-RAY | django-import-export Summary
Django application and library for importing and exporting data with admin integration.
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Top functions reviewed by kandi - BETA
- Implementation of import
- Returns the class attribute of the confirm import form
- Returns the import form
- Creates a confirmation form
- Process import form
- Implementation of import_data
- Processes a dataset
- Process result
- Show the changelist view
- Adds the admin url to the admin view
- Returns widget for m2m field
- Check if tablib format is available
- Format the value
- Returns the keyword arguments passed to the form
- Include the changelist view
- Render a value
- Return a decoded value
- Return the value for the widget
- Exports resources
- Cleans the queryset
- Return the admin url
- Get an instance from a row
- Returns an instance of the given row
- Creates a widget for the given field
- Saves data to object
- Reset all rows from the database
django-import-export Key Features
django-import-export Examples and Code Snippets
Lines of Code : 11License : Strong Copyleft (CC BY-SA 4.0)
Copyclass ClassResource(resources.ModelResource):
class Meta:
model = Class
fields = ('student__name', 'student__lastname')
name = Field(
column_name='name',
attribute='name',
from import_export.widgets import ManyToManyWidget
class BinResource(ModelResource):
item = Field(
attribute='item',
widget=ManyToManyWidget(Category, field='part_number',
sclass ReferenceResource(resources.ModelResource):
def __init__(self, customer_id):
super().__init__()
self.customer_id = customer_id
def get_queryset(self):
qs = Customer.objects.filter(pk=self.customer.idclass StudentResource(resources.ModelResource):
def __init__(self, *args, **kwargs):
self._institution=kwargs.pop('institution', None)
super().__init__(*args, **kwargs)
print(self._institution)
def beclass BookResource(ModelResource):
class Meta:
model = Book
def __init__(self, form_fields=None):
super().__init__()
self.form_fields = form_fields
def get_export_fields(self):
return [self.ficlass ImportStudentsResource(resources.ModelResource):
def __init__(self, school_id):
super().__init__()
self.school_id = school_id
def before_save_instance(self, instance, using_transactions, dry_run):
in#resources.py
class SitePartResource(resources.ModelResource):
...
system_no = fields.Field(
column_name='system_no',
attribute='system_no',
widget=ForeignKeyWidget(
Agency,
field='sclass BookResource(resources.ModelResource):
def before_import(self, dataset, using_transactions, dry_run, **kwargs):
for row in dataset.dict:
print(row)
def save(self, *args, **kwargs):
data_counter = Item.objects.filter(location=self.location).aggregate(counter=Count('id'))['counter'] # Count existing instance with matching "location id" of the new instance
if self.pk is None andJaq / class 2
Lucy / class 2
# only 1 can have 2 as its a ForeignKey
# same error will happen in stream row 4 Eagle 2 Hawk
Community Discussions
Trending Discussions on django-import-export
QUESTION
I am implementing an export function with django-import-export-celery and the instructions
are only three steps. I followed all of them, and when I try to do an export, it gives me an error on the celery process:
This is what my code looks like:
...ANSWER
Answered 2022-Mar-04 at 08:38You have to make a migrate. Django doesn't recognize "export_job" until you make a migrate.
QUESTION
If i export to xlsx and reimport, Django-Import-Export reports overwritten fields but there are no changes. I already tried to debug this myself with the skip_row() method but i think im generally doing sommething wrong
resources.py
...ANSWER
Answered 2022-Feb-22 at 19:07Some points which may help:
- The import process is going to try to load existing data based on all four attributes in
import_id_fields - It will then compare all fields from your Excel file (which correspond to attributes in
FormatClass) with what is persisted, and if any of them do not match, it will report an 'update' - Set a breakpoint here to catch which field it thinks has changed.
QUESTION
I want to add an additional field to my Import-Form on the Admin page. I did everything the Docs say but the entered values for year and calender_week wont show up.
resources.py ...ANSWER
Answered 2022-Feb-19 at 21:29If I understand correctly, you want to select a value from a dropdown and have that inserted for all rows. This means that if there is a value for 'Jahr' in the import file, this will be ignored in favour of the value selected from the dropdown.
Setting an import field to the selection in the dropdown can be achieved by assigning the value of the dropdown onto the instance of the object to be imported as follows. (I've used the single field 'year' instead of 'Jahr' and 'Kalenderwoche' but you can update your implementation along the same lines).
QUESTION
I am trying to export the data from my database from the django admin page using the django-import-export package. When I export a model, I also want to show the data in a particular field for every object in a many to many relationship.
It looks something like this:
models.py
...ANSWER
Answered 2022-Feb-01 at 14:35If you want the exported m2m column to contain a different field, you can simply pass the name of the field when declaring the ManyToManyWidget on the field.
For example:
QUESTION
My project use Django framework and installed django-import-export plugin. I can import and export everything normally. But when i imported file to database. All new records from file upload was imported successfully. but old record that is not in the new records not delete.
old data in database ...ANSWER
Answered 2022-Jan-30 at 15:33django-import-export won't do this for you by default, but you can easily add some hooks to achieve this.
You can track the id of each row imported or updated, and then delete any others at the end of the import.
for example:
QUESTION
just tried out django-import-export to import som things from a csv-file. Followed the doc but I always get an error when trying to import the following Model:
...ANSWER
Answered 2021-Dec-21 at 10:22There is no field id within my model the primary key field is key so why it is not taken?
The default field for identifying whether an object exists or not is called 'id'. However you can override using import_id_fields, so in your case the following should work:
QUESTION
I have created a new task in django-import-export-celery and it has successfully imported the tasks.
But I cannot view the summary of the changes.
I already added this in my urlpatterns:
The files are present on my directory, but they cannot show the view. I'm following this repo as my reference.
EDIT: The line url(r'^', admin.site.urls), messes up with the URL. When I remove it, I can see the template, but all other app pages do not show. When I let it stay, I can see all other pages but the template throws an error.
ANSWER
Answered 2021-Dec-14 at 21:29I put static first like so:
QUESTION
ANSWER
Answered 2021-Dec-14 at 21:27I added this:
QUESTION
I have a minor issue where I always see an error 13:
...ANSWER
Answered 2021-Dec-14 at 21:26I just enabled permission with chown 755
QUESTION
I have a form which enables a user to register on our website. Now I need to export all the data to excel, so I turned towards the import-export package. I have 3 models, Customer, Reference and Contact. The latter two both have a m2m with Customer. I also created Resources for these models. When I use Resource().export() at the end of my done() method in my form view, it exports all existing objects in the database, which is not what I want.
I tried googling this and only got one result, which basically says I need to use before_export(), but I can't find anywhere in the docs how it actually works.
I tried querying my customer manually like:
...ANSWER
Answered 2021-Dec-09 at 13:34One way is to override get_queryset(), you could potentially try to load all related data in a single query:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install django-import-export
You can use django-import-export like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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