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add django admin example
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‎content/pages/examples/django/django-contrib-admin.markdown‎

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@@ -8,6 +8,162 @@ meta: Python code examples for the admin module within django.contrib of the Dja
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# django.contrib.admin Examples
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The [Django admin](https://docs.djangoproject.com/en/2.2/ref/contrib/admin/)
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is an automatically-generated user interface for [Django models](/django-orm.html).
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The admin interface can be heavily customized and the code examples below can
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help you understand how to implement some of the trickier parts of customization.
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## Example 1 from heritagesites
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[heritagesites](https://github.com/Michael-Cantley/heritagesites) is a
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[Django](/django.html)-based web app with a [MySQL](/mysql.html)
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backend that displays
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[UNESCO heritage sites](https://whc.unesco.org/en/list/). The project
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code is open source under the
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[MIT license](https://github.com/Michael-Cantley/heritagesites/blob/master/LICENSE).
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[**heritagesites/heritagesites/admin.py**](https://github.com/Michael-Cantley/heritagesites/blob/master/heritagesites/admin.py)
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```python
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# admin.py
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~~from django.contrib import admin
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import heritagesites.models as models
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@admin.register(models.CountryArea)
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class CountryAreaAdmin(admin.ModelAdmin):
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fields = [
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'country_area_name',
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# (
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# 'region',
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# 'sub_region',
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# 'intermediate_region'
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# ),
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'iso_alpha3_code',
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'm49_code',
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'location',
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'dev_status'
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]
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list_display = [
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'country_area_name',
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# 'region',
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# 'sub_region',
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# 'intermediate_region',
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'location',
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'iso_alpha3_code',
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'm49_code',
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'dev_status'
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]
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list_filter = ['location', 'dev_status']
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# list_filter = ['location', 'dev_status'] list_filter = ['region', 'sub_region', 'intermediate_region', 'dev_status']
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# admin.site.register(models.CountryArea)
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@admin.register(models.DevStatus)
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class DevStatusAdmin(admin.ModelAdmin):
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fields = ['dev_status_name']
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list_display = ['dev_status_name']
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ordering = ['dev_status_name']
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# admin.site.register(models.DevStatus)
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@admin.register(models.HeritageSite)
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class HeritageSiteAdmin(admin.ModelAdmin):
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fieldsets = (
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(None, {
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'fields': (
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'site_name',
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'heritage_site_category',
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'description',
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'justification',
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'date_inscribed'
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)
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}),
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('Location and Area', {
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'fields': [
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(
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'longitude',
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'latitude'
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),
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'area_hectares',
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'transboundary'
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]
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})
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)
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list_display = (
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'site_name',
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'date_inscribed',
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'area_hectares',
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'heritage_site_category',
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'country_area_display'
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)
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list_filter = (
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'heritage_site_category',
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'date_inscribed'
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)
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# admin.site.register(models.HeritageSite)
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@admin.register(models.HeritageSiteCategory)
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class HeritageSiteCategoryAdmin(admin.ModelAdmin):
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fields = ['category_name']
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list_display = ['category_name']
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ordering = ['category_name']
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# admin.site.register(models.HeritageSiteCategory)
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@admin.register(models.IntermediateRegion)
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class IntermediateRegionAdmin(admin.ModelAdmin):
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fields = ['intermediate_region_name', 'sub_region']
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list_display = ['intermediate_region_name', 'sub_region']
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ordering = ['intermediate_region_name']
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# admin.site.register(models.IntermediateRegion)
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@admin.register(models.Region)
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class RegionAdmin(admin.ModelAdmin):
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fields = ['region_name', 'planet']
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list_display = ['region_name', 'planet']
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ordering = ['region_name', 'planet']
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# admin.site.register(models.Region)
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@admin.register(models.SubRegion)
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class SubRegionAdmin(admin.ModelAdmin):
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fields = ['sub_region_name', 'region']
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list_display = ['sub_region_name', 'region']
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ordering = ['sub_region_name']
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# admin.site.register(models.SubRegion)
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@admin.register(models.Planet)
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class Planet(admin.ModelAdmin):
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"""
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New class added as a result of Mtg 5 database refactoring.
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"""
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fields = ['planet_name', 'unsd_name']
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list_display = ['planet_name', 'unsd_name']
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ordering = ['planet_name', 'unsd_name']
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@admin.register(models.Location)
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class Location(admin.ModelAdmin):
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"""
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New class added as a result of Mtg 5 database refactoring.
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"""
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fields = ['planet', 'region', 'sub_region', 'intermediate_region']
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list_display = ['planet', 'region', 'sub_region', 'intermediate_region']
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ordering = ['planet', 'region', 'sub_region', 'intermediate_region']
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```

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