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Make Template.contentBlock consistent #358

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merged 3 commits into from
Apr 6, 2022
Merged

Make Template.contentBlock consistent #358

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882cbb6
Update lookup.js
znewsham Dec 24, 2021
7ec722a
Update HISTORY.md
znewsham Dec 29, 2021
2a841d3
Merge branch 'release-2.6' into znewsham-patch-1
StorytellerCZ Apr 5, 2022
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24 changes: 20 additions & 4 deletions packages/blaze/lookup.js
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,25 @@ var wrapHelper = function (f, templateFunc) {
};
};

function _lexicalKeepGoing(currentView) {
if (!currentView.parentView) {
return undefined;
}
if (!currentView.__startsNewLexicalScope) {
return currentView.parentView;
}
if (currentView.parentView.__childDoesntStartNewLexicalScope) {
return currentView.parentView;
}

// in the case of {{> Template.contentBlock data}} the contentBlock loses the lexical scope of it's parent, wheras {{> Template.contentBlock}} it does not
// this is because a #with sits between the include InOuterTemplateScope
if (currentView.parentView.name === "with" && currentView.parentView.parentView && currentView.parentView.parentView.__childDoesntStartNewLexicalScope) {
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I would personally break the lines for better readability but that's optional, since we have no definite linter yet (I think)

return currentView.parentView;
}
return undefined;
}

Blaze._lexicalBindingLookup = function (view, name) {
var currentView = view;
var blockHelpersStack = [];
Expand All @@ -99,10 +118,7 @@ Blaze._lexicalBindingLookup = function (view, name) {
return bindingReactiveVar.get();
};
}
} while (! (currentView.__startsNewLexicalScope &&
! (currentView.parentView &&
currentView.parentView.__childDoesntStartNewLexicalScope))
&& (currentView = currentView.parentView));
} while (currentView = _lexicalKeepGoing(currentView));

return null;
};
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