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feat: capture root context

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This commit is contained in:
Juro Oravec 2024-04-15 10:05:27 +02:00
parent 8d3a2ba8db
commit ec12a3bcb8
2 changed files with 15 additions and 0 deletions
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14
src/django_components/component.py
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@ -28,6 +28,7 @@ from django_components.slots import (
FillContent, FillContent,
SlotName, SlotName,
render_component_template_with_slots, render_component_template_with_slots,
OUTER_CONTEXT_CONTEXT_KEY,
DEFAULT_SLOT_KEY, DEFAULT_SLOT_KEY,
) )
from django_components.utils import search from django_components.utils import search
@ -317,6 +318,12 @@ class ComponentNode(Node):
resolved_component_name = self.name_fexp.resolve(context) resolved_component_name = self.name_fexp.resolve(context)
component_cls: Type[Component] = registry.get(resolved_component_name) component_cls: Type[Component] = registry.get(resolved_component_name)
# If this is the outer-/top-most component node, then save the outer context,
# so it can be used by nested Slots.
root_ctx_already_defined = OUTER_CONTEXT_CONTEXT_KEY in context
if not root_ctx_already_defined:
context.push({ OUTER_CONTEXT_CONTEXT_KEY: context.__copy__() })
# Resolve FilterExpressions and Variables that were passed as args to the # Resolve FilterExpressions and Variables that were passed as args to the
# component, then call component's context method # component, then call component's context method
# to get values to insert into the context # to get values to insert into the context
@ -344,8 +351,15 @@ class ComponentNode(Node):
component_context: dict = component.get_context_data(*resolved_context_args, **resolved_context_kwargs) component_context: dict = component.get_context_data(*resolved_context_args, **resolved_context_kwargs)
# Prevent outer context from leaking into the template of the component
if self.isolated_context: if self.isolated_context:
# Even if contexts are isolated, we still need to pass down the
# original context so variables in slots can be rendered using
# the original context.
orig_ctx = context
context = context.new() context = context.new()
context.push({ OUTER_CONTEXT_CONTEXT_KEY: orig_ctx })
with context.update(component_context): with context.update(component_context):
rendered_component = component.render(context) rendered_component = component.render(context)

1
src/django_components/slots.py
View file

@ -20,6 +20,7 @@ from django.utils.safestring import SafeString, mark_safe
FILLED_SLOTS_CONTENT_CONTEXT_KEY = "_DJANGO_COMPONENTS_FILLED_SLOTS" FILLED_SLOTS_CONTENT_CONTEXT_KEY = "_DJANGO_COMPONENTS_FILLED_SLOTS"
DEFAULT_SLOT_KEY = "_DJANGO_COMPONENTS_DEFAULT_SLOT" DEFAULT_SLOT_KEY = "_DJANGO_COMPONENTS_DEFAULT_SLOT"
OUTER_CONTEXT_CONTEXT_KEY = "_DJANGO_COMPONENTS_OUTER_CONTEXT"
# Type aliases # Type aliases