Surface.View can not access context

[maennchen]

Describe the bug

When using the context in a template defined inside a Surface.View, both (old) <Context get={...}> and (new) prop name, :type, from_context: ... in a used component yields nil.

How to reproduce it

1. Use surface initialized with --layouts
2. Use context in live.sface or a component used by live.sface
3. Resulting value will always be nil

The behavior you expected

The value is read correctly.

Your Environment

Surface: v0.8.1
LiveView: v0.17.11
Elixir: v1.14.0

Culprit

I tracked down the issue to the following line:

surface/lib/surface/compiler/eex_engine.ex

Lines 1095 to 1100 in b9675f9

	initial_context =
	if caller_is_module_component? do
	quote do: @__context__
	else
	quote do: %{}
	end

Since this looks like the context is intentionally set to an empty map, I decided not to attempt a PR for now.

Workaround

I built the component inclusion manually, for now, to work around the constraint / issue:

https://github.com/jshmrtn/hygeia/blob/c1debcb8c2652042ee1bf61b566ad2cb3e965ac7/lib/hygeia_web/templates/layout/live.sface#L2-L16