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refactoring on the readme

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Daniel Bauer
2024-11-22 10:49:44 +01:00
parent d11f2246df
commit 7a414e5772
1 changed files with 49 additions and 32 deletions
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README.md
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@@ -15,6 +15,17 @@ Based on the [Signposting](https://github.com/stain/signposting) library.
- Supports multiple relation types with optional media type specification. - Supports multiple relation types with optional media type specification.
- Easily integrable with existing Django applications. - Easily integrable with existing Django applications.
### Signposts are formatted and added as Link headers
```bash
curl -I http://localhost:8000
HTTP/2 200
...
link: <https://schema.org/Dataset> ; rel="type" ,
<https://orcid.org/0000-0001-9447-460X> ; rel="author" ,
<https://example.com/download.zip> ; rel="item" ; type="application/zip"
```
## Installation ## Installation
```bash ```bash
@@ -26,7 +37,22 @@ pip install django-signposting
### Automatic parsing of JSON-LD ### Automatic parsing of JSON-LD
The library can automatically add signposts to web pages that already make The library can automatically add signposts to web pages that already make
metadata available via JSON-LD in HTML via `<script type="application/ld+json">` tags. To enable automatic parsing of JSON-LD, add the following middleware classes to your Django project's MIDDLEWARE setting in settings.py: metadata available via JSON-LD in HTML via `<script type="application/ld+json">` tags, i.e.:
```HTML
<!DOCTYPE html>
<html>
<head>
<script type="application/ld+json">{"@context": "https://schema.org", "@type": ["WebSite", "Dataset"], "author": {"@type": "Person", "name": "Daniel Bauer", "url": "https://orcid.org/0000-0001-9447-460X"}, "description": "A dataset of things.", "hasPart": [{"@type": "ImageObject", "encodingFormat": "image/png", "url": "http://example.com/image.png"}, {"@type": "ImageObject", "encodingFormat": "image/png", "url": "http://example.com/image2.png"}], "license": {"@type": "CreativeWork", "name": "CC BY 4.0", "url": "https://creativecommons.org/licenses/by/4.0/"}, "name": "My Dataset", "sameAs": [{"@type": "MediaObject", "contentUrl": "https://example.com/download.zip", "encodingFormat": "application/zip"}, {"@type": "MediaObject", "contentUrl": "https://example.com/metadata.json"}], "url": "https://example.com"}</script>
</head>
<body>
<p>Hello, world!</p>
</body>
</html>
```
To enable automatic parsing of JSON-LD, add the following middleware classes to your Django project's MIDDLEWARE setting in settings.py:
```python ```python
MIDDLEWARE = [ MIDDLEWARE = [
@@ -37,36 +63,20 @@ MIDDLEWARE = [
] ]
``` ```
This extracts supported properties from JSON-LD and adds the corresponding signposting headers to the `HttpResponse`. This extracts supported metadatad properties from JSON-LD and adds the corresponding signposting headers to the `HttpResponse` automatically.
Automatic parsing is compatible with extensions that provide JSON-LD as part of a web page, such as [django-json-ld](https://pypi.org/project/django-json-ld/). Automatic parsing is compatible with extensions that provide JSON-LD as part of a web page, such as [django-json-ld](https://pypi.org/project/django-json-ld/).
It can also extract signposts from rich metadata descriptions of datasets such as [RO-Crate](https://www.researchobject.org/ro-crate) format (see [example views](./example/example/views.py)). It can also extract signposts from rich metadata descriptions of datasets such as detached [RO-Crates](https://www.researchobject.org/ro-crate) (see [example views](./example/example/views.py)).
> Note: The middleware order is important! Place `SignpostingMiddleware` before `JsonLdSignpostingParserMiddleware` to ensure proper extraction and processing of JSON-LD content. > Note: The middleware order is important! Place `SignpostingMiddleware` before `JsonLdSignpostingParserMiddleware` to ensure proper extraction and processing of JSON-LD content.
### Manual parsing of JSON-LD ## Alternative approaches
If you have metadata in JSON-LD available, but it is not rendered as part of the response, you can still parse it manually to create signposting links:
```python
from django.http import HttpResponse
from django_signposting.utils import add_signposts, jsonld_to_signposts
response = HttpResponse("Hello World")
json_ld = {
"@context": "http://schema.org/",
"@graph": [
...
]
}
signposts = jsonld_to_signposts(json_ld)
add_signposts(response, **signposts)
```
### Manual signposting ### Manual signposting
For cases where JSON-LD is not embedded, or you want to specify headers manually, you can use the `add_signposts` utility. For cases where there is no embedded JSON-LD, or you want to specify additional headers manually, you can use the `add_signposts` utility function.
This still requires the `SignpostingMiddleware` to inject the links into
the response:
1. **Add Middleware**: Add the `SignpostingMiddleware` to your Django project's `MIDDLEWARE` setting in `settings.py`: 1. **Add Middleware**: Add the `SignpostingMiddleware` to your Django project's `MIDDLEWARE` setting in `settings.py`:
@@ -99,15 +109,23 @@ def my_view(request):
return response return response
``` ```
## Signposts are formatted and added as Link headers by the middleware ### Manual parsing of JSON-LD
```bash If you have metadata in JSON-LD available, but it is not rendered as part of the response, you can still parse it and add the signposting links manually:
curl -I http://localhost:8000
HTTP/2 200 ```python
... from django.http import HttpResponse
link: <https://schema.org/Dataset> ; rel="type" , from django_signposting.utils import add_signposts, jsonld_to_signposts
<https://orcid.org/0000-0001-9447-460X> ; rel="author" ,
<https://example.com/download.zip> ; rel="item" ; type="application/zip" response = HttpResponse("Hello World")
json_ld = {
"@context": "http://schema.org/",
"@graph": [
...
]
}
signposts = jsonld_to_signposts(json_ld)
add_signposts(response, **signposts)
``` ```
## TODO ## TODO
@@ -116,7 +134,6 @@ link: <https://schema.org/Dataset> ; rel="type" ,
- [ ] Add support for link sets - [ ] Add support for link sets
- [ ] Add support for specifying profile extension attribute - [ ] Add support for specifying profile extension attribute
## License ## License
Licensed under the MIT License. Licensed under the MIT License.