skillbox/server/api/graphene_wagtail.py

150 lines
5.5 KiB
Python

# mysite/api/graphene_wagtail.py
# Taken from https://github.com/patrick91/wagtail-ql/blob/master/backend/graphene_utils/converter.py and slightly adjusted
import logging
from graphene.types import Scalar
from graphene_django.converter import convert_django_field
from graphql_relay import to_global_id
from wagtail.fields import StreamField
from wagtail.images.models import Image
from assignments.models import Assignment
from basicknowledge.models import BasicKnowledge
from books.models import CustomDocument
from surveys.models import Survey
logger = logging.getLogger(__name__)
# todo: replace this with the newer method from https://wagtail.org/blog/graphql-with-streamfield/
class GenericStreamFieldType(Scalar):
@staticmethod
def serialize(stream_value):
raw_data = stream_value.raw_data
return list(augment_fields(raw_data))
def get_document_json(document_id):
try:
document = CustomDocument.objects.get(id=document_id)
value = {
"value": document_id,
"id": document.id,
"file_name": document.filename,
"file_extension": document.file_extension,
"url": document.url,
"title": document.title,
"display_text": document.display_text,
}
return value
except CustomDocument.DoesNotExist:
logger.error("CustomDocument {} does not exist".format(document_id))
return None
def get_wagtail_image_dict(image_id: int) -> dict | None:
from books.schema.nodes import get_srcset, get_src
try:
image = Image.objects.get(id=image_id)
value = {
'value': image_id,
'id': image.id,
'src': get_src(image),
'alt': image.title,
'title': image.title,
'width': image.width,
'height': image.height,
'srcset': get_srcset(image),
}
return value
except Image.DoesNotExist:
logger.error('Image {} does not exist'.format(image_id))
return None
def augment_fields(raw_data):
for data in raw_data:
if isinstance(data, dict):
_type = data['type']
if _type == 'image_block':
_value = data['value']
value = get_wagtail_image_dict(_value)
data['value'] = value
if _type == 'assignment':
_value = data['value']
assignment_id = _value['assignment_id']
try:
assignment = Assignment.objects.get(pk=assignment_id)
value = {
"title": assignment.title,
"assignment": assignment.assignment,
"solution": assignment.solution,
"id": to_global_id("AssignmentNode", assignment.pk),
}
data["value"] = value
except Assignment.DoesNotExist:
logger.error("Assignment {} does not exist".format(assignment_id))
if _type == "survey":
_value = data["value"]
survey_id = _value["survey_id"]
try:
survey = Survey.objects.get(pk=survey_id)
value = {
"title": survey.title,
"id": to_global_id("SurveyNode", survey.pk),
}
data["value"] = value
except Survey.DoesNotExist:
logger.error("Survey {} does not exist".format(survey_id))
if _type == "basic_knowledge" or _type == "instrument":
_value = data["value"]
instrument = BasicKnowledge.objects.get(pk=_value["basic_knowledge"])
_value.update(
{
"slug": instrument.slug,
"foreground": instrument.new_type.category.foreground,
}
)
data["value"] = _value
# value = dict(d['value'])
# if 'document' in value:
# value['document'] = Document.objects.get(id=value['document']).file.url
# if 'image' in value:
# value['image'] = Image.objects.get(id=value['image']).file.url
# else:
# _type = d[0]
# value = dict(d[1])
# if 'document' in value:
# value['document'] = value['document'].file.url
# if 'image' in value:
# value['image'] = value['image'].file.url
if _type == "content_list_item":
item_data = data["value"]
data["value"] = augment_fields(item_data)
if _type == "cms_document_block":
_value = data["value"]
value = get_document_json(_value)
if value is not None:
data["value"] = value
if _type == "solution" or _type == "instruction":
_value = data["value"]
document_id = _value.get("document")
if document_id is not None:
document = get_document_json(document_id)
if document is not None:
_value["document"] = document
data["value"] = _value
return raw_data
@convert_django_field.register(StreamField)
def convert_stream_field(field, registry=None):
return GenericStreamFieldType(description=field.help_text, required=not field.null)