django-admin-easy 0.6

Collection of admin fields and decorators to help to create computed or custom fields more friendly and easy way

Collection of admin fields, decorators and mixin to help to create computed or custom fields more friendly and easy way

Installation

1. Requirements: Django > 1.8 and Python > 3.5

2. pip install django-admin-easy==0.6

• For Django < 1.8 or Python 2.x

  pip install django-admin-easy==0.4.1

How it Works

When you want to display a field on Django Admin, and this field doesn’t exist in your Model or you need to compute some information, like a Image or Link, you will need to create a method on your ModelAdminClass like this:

from django.contrib import admin

class YourAdmin(admin.ModelAdmin):
    fields = ('sum_method', 'some_img', 'is_true')

    def sum_method(self, obj):
        sum_result = obj.field1 + obj.field2 + obj.field3
        return '<b>%s</b>' % sum_result
    sum_method.short_description = 'Sum'
    sum_method.admin_order_field = 'field1'
    sum_method.allow_tags = True

    def some_img(self, obj):
        return '<img scr="%s">' % obj.image
    some_img.short_description = 'image'
    some_img.admin_order_field = 'id'
    some_img.allow_tags = True

    def is_true(self, obj):
        return obj.value > 0
    is_true.short_description = 'Positive'
    is_true.admin_order_field = 'value'
    is_true.boolean = True

It takes too much lines! =D

With django-admin-easy you can easily create this field with less lines:

from django.contrib import admin
import easy

class YourAdmin(admin.ModelAdmin):
    fields = ('sum_method', 'some_img', 'is_true')

    sum_method = easy.SimpleAdminField(lambda obj: '<b>%s</b>' % (obj.field1 + obj.field2 + obj.field3), 'Sum', 'field1', True)
    some_img = easy.ImageAdminField('image', 'id')
    is_true = easy.BooleanAdminField('Positive', 'value')

If you still prefer using a custom method, you can use our decorators, like this:

from django.contrib import admin
import easy

class YourAdmin(admin.ModelAdmin):
    fields = ('sum_method', 'some_img', 'is_true')

    @easy.smart(short_description='Sum', admin_order_field='field1', allow_tags=True )
    def sum_method(self, obj):
        sum_result = obj.field1 + obj.field2 + obj.field3
        return '<b>%s</b>' % sum_result

    @easy.short(desc='image', order='id', tags=True)
    def some_img(self, obj):
        return '<img scr="%s">' % obj.image

    @easy.short(desc='Positive', order='value', bool=True)
    def is_true(self, obj):
        return obj.value > 0

Another Decorators

In all of this extra decorators, you can use short or smart arguments to complement field information.

• Allow HTML tags

@easy.with_tags()
def some_field_with_html(self, obj):
    return '<b>{}</b>'.format(obj.value)
# output some as: mark_safe("<b>something</b>")

if value is 5, will display:

5 and not <b>5</b> on admin page.

• Cached field

If you, for some reason, need to cache a custom field on admin

@easy.cache(10)# in secondd, default is 60
def some_field_with_html(self, obj):
    return obj.related.some_hard_word()

If you change something on your model, or some related object, you can clean this cache using this easy way:

import easy
# wherever you want
easy.cache_clear(my_model_instance)

# or
class MyModel(models.Model):
    # ... fields

    def save(*args, **kwargs):
        easy.cache_clear(self)
        super(MyModel, self).save(*args, **kwargs)

• Django template filter

Can be used with all template filters on your project.

# builtin template filter like {{ value|title }}
@easy.filter('title')
def some_field_with_html(self, obj):
    return 'ezequiel bertti'
# output: "Ezequiel Bertti"

# like {% load i10n %} and {{ value|localize }}
@easy.filter('localize', 'l10n')
def some_field_with_html(self, obj):
    return 10000
# output: "10.000"

# like {{ value|date:'y-m-d' }}
@easy.filter('date', 'default', 'y-m-d')
def some_field_with_html(self, obj):
    return datetime(2016, 06, 28)
# output: "16-06-28"

• Django utils functions

Tested with:

@easy.utils('html.escape')
@easy.utils('html.conditional_escape')
@easy.utils('html.strip_tags')
@easy.utils('safestring.mark_safe')
@easy.utils('safestring.mark_for_escaping')
@easy.utils('text.slugify')
@easy.utils('translation.gettext')
@easy.utils('translation.ugettext')
@easy.utils('translation.gettext_lazy')
@easy.utils('translation.ugettext_lazy')
@easy.utils('translation.gettext_noop')
@easy.utils('translation.ugettext_noop')
def your_method(self, obj):
    return obj.value

More Examples

from django.contrib import admin
import easy

class YourAdmin(admin.ModelAdmin):
    list_fields = ('id', 'custom1', 'custom2', 'custom3' ... 'customN')

    actions = ('simples_action',)

    @easy.action('My Little Simple Magic Action')
    def simple_action(self, request, queryset):
        return queryset.update(magic=True)

    # actoin only for user that has change permission on this model
    @easy.action('Another Simple Magic Action', 'change')
    def simple_action(self, request, queryset):
        return queryset.update(magic=True)


    # render a value of field, method, property or your model or related model
    simple1 = easy.SimpleAdminField('model_field')
    simple2 = easy.SimpleAdminField('method_of_model')
    simple3 = easy.SimpleAdminField('related.attribute_or_method')
    simple4 = easy.SimpleAdminField('related_set.count', 'count')
    simple5 = easy.SimpleAdminField(lambda x: x.method(), 'show', 'order_by')

    # render boolean fields
    bool1 = easy.BooleanAdminField(lambda x: x.value > 10, 'high')

    # render with string format fields
    format1 = easy.FormatAdminField('{o.model_field} - {o.date_field:Y%-%m}', 'column name')

    # render foreignkey with link to change_form in admin
    fk1 = easy.ForeignKeyAdminField('related')

    # render foreignkey with link to change_form in admin and related_id content as text
    fk2 = easy.ForeignKeyAdminField('related', 'related_id')

    # render foreignkey_id, like raw_id_fields, with link to change_form in admin and related_id content as text
    # without extra queries or select_related to prevent extra n-1 queries
    raw1 = easy.RawIdAdminField('related')

    # render template
    template1 = easy.TemplateAdminField('test.html', 'shorty description', 'order_field')

    # render to change_list of another model with a filter on query
    link1 = easy.LinkChangeListAdminField('app_label', 'model_name', 'attribute_to_text',
                                          {'field_name':'dynamic_value_model'})

    link2 = easy.LinkChangeListAdminField('app_label', 'model_name', 'attribute_to_text',
                                          {'field_name':'dynamic_value_model'},
                                          {'another_field': 'static_value'})

    # display image of some model
    image1 = easy.ImageAdminField('image', {'image_attrs':'attr_value'})

    # use django template filter on a field
    filter1 = easy.FilterAdminField('model_field', 'upper')
    filter2 = easy.FilterAdminField('date_field', 'date', 'django', 'y-m-d')
    filter3 = easy.FilterAdminField('float_field', 'localize', 'l18n')

    @easy.smart(short_description='Field Description 12', admin_order_field='model_field')
    def custom12(self, obj):
        return obj.something_cool()

    @easy.short(desc='Field Description 1', order='model_field', tags=True)
    def decorator1(self, obj):
        return '<b>' + obj.model_field + '</b>'

    @easy.short(desc='Field Description 2', order='model_field', bool=True)
    def decorator2(self, obj):
        return obj.model_field > 10

If you want to use on admin form to show some information, don’t forget to add your custom field on readonly_fields attribute of your admin class

from django.contrib import admin
import easy

class YourAdmin(admin.ModelAdmin):
    fields = ('custom1', 'custom2', 'custom3' ... 'customN')
    readonly_fields = ('custom1', 'custom2', 'custom3' ... 'customN')

    custom1 = easy.ForeignKeyAdminField('related')
    # ...

Another way to use is directly on list_fields declaration:

from django.contrib import admin
import easy

class YourAdmin(admin.ModelAdmin):
    list_fields = (
        easy.TemplateAdminField('test.html', 'shorty description', 'order_field'),
        easy.ImageAdminField('image', {'image_attrs':'attr_value'}),
        # ...
    )

    # ...

Mixin

To help you to create a custom view on django admin, we create de MixinEasyView for your Admin Classes

from django.contrib import admin
import easy

class MyModelAdmin(easy.MixinEasyView, admin.ModelAdmin):
    # ...

    def easy_view_jump(self, request, pk=None):
        # do something here
        return HttpResponse('something')

To call this view, you can use this reverse:

from django.core.urlresolvers import reverse

# to do something with one object of a model
reverse('admin:myapp_mymodel_easy', args=(obj.pk, 'jump'))

# or to do something with a model
reverse('admin:myapp_mymodel_easy', args=('jump',))

Or one HTML template

#<!-- to do something with one object of a model -->
{% url 'admin:myapp_mymodel_easy' obj.pk 'jump' %}

#<!-- or to do something with a model -->
{% url 'admin:myapp_mymodel_easy' 'jump' %}

Utilities

• Response for admin actions

  Return for the change list and show some message for the user keeping or not the filters.

from django.contrib import admin
from django.contrib import messages
import easy

class YourAdmin(admin.ModelAdmin):
    # ...
    actions = ('simples_action',)

    def simples_action(self, request, queryset):

        success = queryset.do_something()
        if success:
            return easy.action_response(request, 'Some success message for user', keep_querystring=False)
        else:
            return easy.action_response(request, 'Some error for user', messages.ERROR)

        # or just redirect to changelist with filters
        return easy.action_response()

So easy, no?

Screenshot

Using example of poll of django tutorial

Please help us

This project is still under development. Feedback and suggestions are very welcome and I encourage you to use the Issues list on Github to provide that feedback.

Authors

The django-admin-easy was originally created by Ezequiel Bertti @ebertti October 2014.

Changelog

• 0.6

  • Add RawIdAdminField

• 0.5.1

  • Add permission on action decorator

• 0.4.1

  • Django 2.0

• 0.4

  • Django 1.11

  • Create module utils with action_response

• 0.3.2

  • Add params_static to LinkChangeListAdminField

• 0.3.1

  • Add FormatAdminField

• 0.3

  • Add import from __future__ on all files

  • Django 1.10

  • More decorators

  • More admin fields

• 0.2.2

  • Add MixinEasyView

• 0.2.1

  • Fix for Django 1.7 from @kevgathuku