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Add Schema.org JSON-LD to your website

Project description

Add Schema.org JSON-LD to your website

Installing

wagtail-schema.org supports Wagtail 2.0 upwards.

Install using pip:

$ pip install wagtail-schema.org

Add it to your INSTALLED_APPS to use the Django template tags:

INSTALLED_APPS = [
    ...
    'wagtailschemaorg',
]

Using

wagtail-schema.org supports two types of schema entities: site-wide entities and page-specific entities. Site-wide entities might be the organisation that the site as a whole is about, while page-specific entities might be a single person that the page in question is about. Both sets of entities are optional, and sites can implement only those that make sense.

Site-wide entities

A site-wide entity is printed on every page using the {% ld_for_site %} template tag. They should be entities that are relevant to the whole site, such as the Organisation or Person that the site is about. Multiple (or zero) site-wide entities can exist for a site.

from django.db import models
from wagtail.contrib.settings.models import register_setting

from wagtailschemaorg.models import BaseLDSetting
from wagtailschemaorg.registry import register_site_thing
from wagtailschemaorg.utils import extend


@register_setting
@register_site_thing
class TestOrganisation(BaseLDSetting):
    """Details about this organisation"""
    name = models.CharField(max_length=100)
    phone_number = models.CharField(max_length=20)
    email = models.EmailField()
    twitter_handle = models.CharField(max_length=15)
    facebook_url = models.URLField()

    def ld_entity(self):
        return extend(super().ld_entity(), {
            '@type': 'Organization',
            'name': self.name,
            'email': self.email,
            'telephone': self.phone_number,
            'sameAs': [
                self.twitter_url,
                self.facebook_url,
            ],
        })

    @property
    def twitter_url(self):
        return 'https://twitter.com/' + self.twitter_handle

Note

Every site-wide Thing should have a different @id. By default, the @id is the Thing’s url. You can change a Thing’s @id by overriding ld_get_id or ld_get_url as required.

Page-specific entities

Each page can specify a list of relevant entities. Use {% ld_for_object page %} to print these.

from django.db import models
from wagtail.admin.edit_handlers import FieldPanel
from wagtail.core.models import Page
from wagtail.images.edit_handlers import ImageChooserPanel

from testapp.models import TestOrganisation
from wagtailschemaorg.models import PageLDMixin
from wagtailschemaorg.utils import extend, image_ld


class PersonPage(PageLDMixin, Page):
    bio = models.TextField()
    date_of_birth = models.DateField()
    photo = models.ForeignKey('wagtailimages.Image', on_delete=models.PROTECT)

    content_panels = Page.content_panels + [
        FieldPanel('bio'),
        FieldPanel('date_of_birth'),
        ImageChooserPanel('photo'),
    ]

    def ld_entity(self):
        site = self.get_site()
        return extend(super().ld_entity(), {
            '@type': 'Person',
            'birthDate': self.date_of_birth.isoformat(),
            'image': image_ld(self.photo, base_url=site.root_url),
            'organisation': TestOrganisation.for_site(site),
        })

In templates

wagtail-schema.org provides two template tags: one for printing out the site-wide entities and one for page-specific entities.

Django templates

Make sure that wagtailschemaorg is in your INSTALLED_APPS, and add {% load wagtailschemaorg_tags %} to the top of your template.

{% ld_for_site [site] %}

Print all the site-wide entities for a site. Takes an optional site argument, which defaults to the site from the current template request context. See register_site_thing for more information on site-wide entities.

{% ld_for_object [obj] %}

Print all the entities for obj. obj is optional, and defaults to page in the current template context. obj should implement the ThingLD interface. Calls obj.ld_to_data_list, and prints all the entities returned.

{% ld_print_entity entity %}

Print an entity directly. entity should be a dict with JSON-LD data.

Jinja2 templates

Add wagtailschemaorg.jinja2tags.WagtailSchemaOrgExtension to your Jinja2 extensions.

{{ ld.for_site([site]) %}

Print all the site-wide entities for a site. Takes an optional site argument, which defaults to the site from the current template request context. See register_site_thing for more information on site-wide entities.

{% ld.for_object([obj]) %}

Print all the entities for obj. obj is optional, and defaults to page in the current template context. obj should implement the ThingLD interface. Calls obj.ld_to_data_list, and prints all the entities returned.

{% ld.print_entity(entity) %}

Print an entity directly. entity should be a dict with JSON-LD data.

Project details


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