70 lines
1.8 KiB
Python
70 lines
1.8 KiB
Python
import graphene
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from graphene import relay
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from books.schema.nodes import ModuleNode, TopicNode, ChapterNode, SnapshotChapterNode
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class NodeConnection(relay.Connection):
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"""
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Custom connection type, so we don't need to deal with the edges and nodes if we don't want to, while still
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adhering to the relay specification
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Idea from: https://javascript.plainenglish.io/graphql-pagination-using-edges-vs-nodes-in-connections-f2ddb8edffa0
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Always has property called `nodes` which is filled with the Meta node class.
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Example:
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class TopicConnection(NodeConnection):
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class Meta:
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node = TopicNode
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# will have
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# nodes = graphene.List(TopicNode)
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"""
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class Meta:
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abstract = True
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def resolve_nodes(self, *args, **kwargs):
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return [edge.node for edge in self.edges]
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@classmethod
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def __init_subclass_with_meta__(cls, node=None, name=None, **options):
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cls.nodes = graphene.List(node)
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return super().__init_subclass_with_meta__(
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node, name, **options
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)
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class TopicConnection(NodeConnection):
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class Meta:
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node = TopicNode
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class ModuleConnection(NodeConnection):
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class Meta:
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node = ModuleNode
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class SnapshotChapterEdge:
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description_visible = graphene.Boolean()
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title_visible = graphene.Boolean()
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@staticmethod
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def resolve_description_visible(parent, info, **kwargs):
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return parent.node.description_visible
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@staticmethod
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def resolve_title_visible(parent, info, **kwargs):
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return parent.node.title_visible
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@staticmethod
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def resolve_node(parent, info, **kwargs):
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return parent.node.chapter
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class ChapterSnapshotConnection(NodeConnection):
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class Meta:
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node = SnapshotChapterNode
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Edge = SnapshotChapterEdge
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