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Django CKEditor

Django admin CKEditor integration.

Provides a RichTextField and CKEditorWidget utilizing CKEditor with image upload and browsing support included.

Contents

Testing

Easiest:

python3 -m venv venv
. venv/bin/activate
pip install tox
tox

Other:

python3 -m venv venv
. venv/bin/activate
python -m pip install "lxml==4.5.0" "mock==3.0.5" "Pillow==6.2.1" "Django>=2.2,<4.0" pytest pytest-django
pytest

Installation

Required

  1. Install or add django-ckeditor to your python path.

  2. Add ckeditor to your INSTALLED_APPS setting.

  3. Run the collectstatic management command: manage.py collectstatic. This'll copy static CKEditor require media resources into the directory given by the STATIC_ROOT setting. See Django's documentation on managing static files for more info.

  4. Add a CKEDITOR_UPLOAD_PATH setting to the project's settings.py file. This setting specifies an absolute filesystem path to your CKEditor media upload directory. Make sure you have write permissions for the path, i.e.:

    CKEDITOR_UPLOAD_PATH = "/home/media/media.lawrence.com/uploads"

  5. Add CKEditor URL include to your project's urls.py file:

    (r'^ckeditor/', include('ckeditor.urls')),

Optional

  1. Set the CKEDITOR_RESTRICT_BY_USER setting to True in the project's settings.py file (default False). This restricts access to uploaded images to the uploading user (e.g. each user only sees and uploads their own images). Superusers can still see all images. NOTE: This restriction is only enforced within the CKEditor media browser.

  2. Add a CKEDITOR_UPLOAD_PREFIX setting to the project's settings.py file. This setting specifies a URL prefix to media uploaded through CKEditor, i.e.:

    CKEDITOR_UPLOAD_PREFIX = "http://media.lawrence.com/media/ckuploads/

    (If CKEDITOR_UPLOAD_PREFIX is not provided, the media URL will fall back to MEDIA_URL with the difference of MEDIA_ROOT and the uploaded resource's full path and filename appended.)

  3. Add a CKEDITOR_CONFIGS setting to the project's settings.py file. This specifies sets of CKEditor settings that are passed to CKEditor (see CKEditor's Setting Configurations), i.e.:

    CKEDITOR_CONFIGS = {
    'awesome_ckeditor': {
        'toolbar': 'Basic',
    },
}

    The name of the settings can be referenced when instantiating a RichTextField:

    content = RichTextField(config_name='awesome_ckeditor')

    The name of the settings can be referenced when instantiating a CKEditorWidget:

    widget = CKEditorWidget(config_name='awesome_ckeditor')

    By specifying a set named default you'll be applying its settings to all RichTextField and CKEditorWidget objects for which config_name has not been explicitly defined:

    CKEDITOR_CONFIGS = {
    'default': {
        'toolbar': 'Full',
        'height': 300,
    'width': 300,
    },
}

  4. Add CKEDITOR_PNG_TO_JPEG setting to project's settings.py file. This will convert all non-transparent PNG files to JPEG images instead, when dynamic_resize is set to True. This can save a large amount of bandwidth by reducing potentially large PNGs to a more conservatively sized jpeg.

Usage

Field

The quickest way to add rich text editing capabilities to your models is to use the included RichTextField model field type. A CKEditor widget is rendered as the form field but in all other regards the field behaves as the standard Django TextField. For example:

from django.db import models
from ckeditor.fields import RichTextField

class Post(models.Model):
    content = RichTextField()

RichTextField takes an optional kwarg, dynamic_resize, which attempts to optimize embeded images. The default value is False.

Admin

Our version of Django-CKEditor will create thumbnails of resized images on save. By default, if something goes wrong, it raises an exception. We prefer to pass a warning to the user (using messages), log the error, rather than stock saving and validation dead in its tracks.

To use this feature in the admin, add this to your ModelAdmin to ensure the form can access the request:

def formfield_for_dbfield(self, db_field, request=None, **kwargs):
    if isinstance(db_field, RichTextField):
        return db_field.formfield(request=request, **kwargs)
    return super(PostAdmin, self).formfield_for_dbfield(db_field, request=request, **kwargs)

Widget

Alernatively you can use the included CKEditorWidget as the widget for a formfield. For example:

from django import forms
from django.contrib import admin
from ckeditor.widgets import CKEditorWidget

from post.models import Post

class PostAdminForm(forms.ModelForm):
    content = forms.CharField(widget=CKEditorWidget())
    class Meta:
        model = Post

class PostAdmin(admin.ModelAdmin):
    form = PostAdminForm

admin.site.register(Post, PostAdmin)

Managment Commands

Included is a management command to create thumbnails for images already contained in CKEDITOR_UPLOAD_PATH. This is useful to create thumbnails when starting to use django-ckeditor with existing images. Issue the command as follows:

manage.py generateckeditorthumbnails

NOTE: If you're using custom views remember to include ckeditor.js in your form's media either through {{ form.media }} or through a <script> tag. Admin will do this for you automatically. See Django's Form Media docs for more info.