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271 lines
9.6 KiB
Markdown
271 lines
9.6 KiB
Markdown
# Adding reports
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Reports are views with listings of pages matching a specific query. They can also export these listings in spreadsheet format.
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They are found in the _Reports_ submenu: by default, the _Locked pages_ report is provided, allowing an overview of locked pages on the site.
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It is possible to create your own custom reports in the Wagtail admin. Two base classes are provided:
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`wagtail.admin.views.reports.ReportView`, which provides basic listing and spreadsheet export functionality, and
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`wagtail.admin.views.reports.PageReportView`, which additionally provides a default set of fields suitable for page listings.
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For this example, we'll add a report which shows any pages with unpublished changes.
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```python
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# <project>/views.py
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from wagtail.admin.views.reports import PageReportView
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class UnpublishedChangesReportView(PageReportView):
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pass
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```
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## Defining your report
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The most important attributes and methods to customise to define your report are:
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```{eval-rst}
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.. method:: get_queryset(self)
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```
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This retrieves the queryset of pages for your report. For our example:
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```python
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# <project>/views.py
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from wagtail.admin.views.reports import PageReportView
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from wagtail.models import Page
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class UnpublishedChangesReportView(PageReportView):
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def get_queryset(self):
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return Page.objects.filter(has_unpublished_changes=True)
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```
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```{eval-rst}
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.. attribute:: template_name
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(string)
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The template used to render your report. For ``ReportView``, this defaults to ``"wagtailadmin/reports/base_report.html"``,
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which provides an empty report page layout; for ``PageReportView``, this defaults to
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``"wagtailadmin/reports/base_page_report.html"`` which provides a listing based on the explorer views,
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displaying action buttons, as well as the title, time of the last update, status, and specific type of any pages.
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In this example, we'll change this to a new template in a later section.
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.. attribute:: title
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(string)
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The name of your report, which will be displayed in the header. For our example, we'll set it to
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``"Pages with unpublished changes"``.
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.. attribute:: header_icon
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(string)
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The name of the icon, using the standard Wagtail icon names. For example, the locked pages view uses ``"locked"``,
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and for our example report, we'll set it to ``'doc-empty-inverse'``.
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```
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## Spreadsheet exports
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```{eval-rst}
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.. attribute:: list_export
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(list)
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A list of the fields/attributes for each model which are exported as columns in the spreadsheet view. For ``ReportView``, this
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is empty by default, and for ``PageReportView``, it corresponds to the listing fields: the title, time of the last update, status,
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and specific type of any pages. For our example, we might want to know when the page was last published, so we'll set
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``list_export`` as follows:
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``list_export = PageReportView.list_export + ['last_published_at']``
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.. attribute:: export_headings
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(dictionary)
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A dictionary of any fields/attributes in ``list_export`` for which you wish to manually specify a heading for the spreadsheet
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column, and their headings. If unspecified, the heading will be taken from the field ``verbose_name`` if applicable, and the
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attribute string otherwise. For our example, ``last_published_at`` will automatically get a heading of ``"Last Published At"``,
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but a simple "Last Published" looks neater. We'll add that by setting ``export_headings``:
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``export_headings = dict(last_published_at='Last Published', **PageReportView.export_headings)``
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.. attribute:: custom_value_preprocess
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(dictionary)
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A dictionary of ``(value_class_1, value_class_2, ...)`` tuples mapping to ``{export_format: preprocessing_function}`` dictionaries,
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allowing custom preprocessing functions to be applied when exporting field values of specific classes (or their subclasses). If
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unspecified (and ``ReportView.custom_field_preprocess`` also does not specify a function), ``force_str`` will be used. To prevent
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preprocessing, set the preprocessing_function to ``None``.
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.. attribute:: custom_field_preprocess
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(dictionary)
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A dictionary of ``field_name`` strings mapping to ``{export_format: preprocessing_function}`` dictionaries,
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allowing custom preprocessing functions to be applied when exporting field values of specific classes (or their subclasses). This
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will take priority over functions specified in ``ReportView.custom_value_preprocess``. If unspecified (and
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``ReportView.custom_value_preprocess`` also does not specify a function), ``force_str`` will be used. To prevent
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preprocessing, set the preprocessing_function to ``None``.
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```
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## Customising templates
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For this example \"pages with unpublished changes\" report, we'll add an extra column to the listing template, showing the last publication date for each page. To do this, we'll extend two templates: `wagtailadmin/reports/base_page_report.html`, and `wagtailadmin/reports/listing/_list_page_report.html`.
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```html+django
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{# <project>/templates/reports/unpublished_changes_report.html #}
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{% extends 'wagtailadmin/reports/base_page_report.html' %}
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{% block listing %}
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{% include 'reports/include/_list_unpublished_changes.html' %}
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{% endblock %}
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{% block no_results %}
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<p>No pages with unpublished changes.</p>
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{% endblock %}
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```
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```html+django
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{# <project>/templates/reports/include/_list_unpublished_changes.html #}
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{% extends 'wagtailadmin/reports/listing/_list_page_report.html' %}
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{% block extra_columns %}
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<th>Last Published</th>
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{% endblock %}
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{% block extra_page_data %}
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<td valign="top">
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{{ page.last_published_at }}
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</td>
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{% endblock %}
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```
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Finally, we'll set `UnpublishedChangesReportView.template_name` to this new template: `'reports/unpublished_changes_report.html'`.
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## Adding a menu item and admin URL
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To add a menu item for your new report to the _Reports_ submenu, you will need to use the `register_reports_menu_item` hook (see: [Register Reports Menu Item](register_reports_menu_item)). To add an admin url for the report, you will need to use the `register_admin_urls` hook (see: [Register Admin URLs](register_admin_urls)). This can be done as follows:
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```python
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# <project>/wagtail_hooks.py
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from django.urls import path, reverse
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from wagtail.admin.menu import AdminOnlyMenuItem
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from wagtail import hooks
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from .views import UnpublishedChangesReportView
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@hooks.register('register_reports_menu_item')
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def register_unpublished_changes_report_menu_item():
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return AdminOnlyMenuItem("Pages with unpublished changes", reverse('unpublished_changes_report'), icon_name=UnpublishedChangesReportView.header_icon, order=700)
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@hooks.register('register_admin_urls')
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def register_unpublished_changes_report_url():
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return [
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path('reports/unpublished-changes/', UnpublishedChangesReportView.as_view(), name='unpublished_changes_report'),
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]
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```
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Here, we use the `AdminOnlyMenuItem` class to ensure our report icon is only shown to superusers. To make the report visible to all users, you could replace this with `MenuItem`.
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## Setting up permission restriction
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Even with the menu item hidden, it would still be possible for any user to visit the report's URL directly, and so it is necessary to set up a permission restriction on the report view itself. This can be done by adding a `dispatch` method to the existing `UnpublishedChangesReportView` view:
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```python
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# add the below dispatch method to the existing UnpublishedChangesReportView view
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def dispatch(self, request, *args, **kwargs):
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if not self.request.user.is_superuser:
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return permission_denied(request)
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return super().dispatch(request, *args, **kwargs)
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```
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## The full code
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```python
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# <project>/views.py
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from wagtail.admin.auth import permission_denied
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from wagtail.admin.views.reports import PageReportView
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from wagtail.models import Page
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class UnpublishedChangesReportView(PageReportView):
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header_icon = 'doc-empty-inverse'
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template_name = 'reports/unpublished_changes_report.html'
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title = "Pages with unpublished changes"
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list_export = PageReportView.list_export + ['last_published_at']
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export_headings = dict(last_published_at='Last Published', **PageReportView.export_headings)
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def get_queryset(self):
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return Page.objects.filter(has_unpublished_changes=True)
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def dispatch(self, request, *args, **kwargs):
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if not self.request.user.is_superuser:
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return permission_denied(request)
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return super().dispatch(request, *args, **kwargs)
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```
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```python
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# <project>/wagtail_hooks.py
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from django.urls import path, reverse
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from wagtail.admin.menu import AdminOnlyMenuItem
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from wagtail import hooks
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from .views import UnpublishedChangesReportView
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@hooks.register('register_reports_menu_item')
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def register_unpublished_changes_report_menu_item():
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return AdminOnlyMenuItem("Pages with unpublished changes", reverse('unpublished_changes_report'), icon_name=UnpublishedChangesReportView.header_icon, order=700)
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@hooks.register('register_admin_urls')
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def register_unpublished_changes_report_url():
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return [
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path('reports/unpublished-changes/', UnpublishedChangesReportView.as_view(), name='unpublished_changes_report'),
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]
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```
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```html+django
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{# <project>/templates/reports/unpublished_changes_report.html #}
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{% extends 'wagtailadmin/reports/base_page_report.html' %}
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{% block listing %}
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{% include 'reports/include/_list_unpublished_changes.html' %}
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{% endblock %}
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{% block no_results %}
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<p>No pages with unpublished changes.</p>
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{% endblock %}
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```
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```html+django
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{# <project>/templates/reports/include/_list_unpublished_changes.html #}
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{% extends 'wagtailadmin/reports/listing/_list_page_report.html' %}
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{% block extra_columns %}
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<th>Last Published</th>
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{% endblock %}
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{% block extra_page_data %}
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<td valign="top">
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{{ page.last_published_at }}
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</td>
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{% endblock %}
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```
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