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[FIX] qweb: do not leak values in global context in rare cases

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In some very rare cases (such as the use of the t-foreach directive),
Owl did leak the values in the render context in the global context.
This was due to the fact that the compiled template looked like this:

let _3 = _4 = _5;

instead of

let _3 = _5;
let _4 = _5;
This commit is contained in:
Géry Debongnie
2021-10-19 15:55:57 +02:00
committed by aab-odoo
parent c0f495661d
commit 6e185f987b
6 changed files with 130 additions and 38 deletions
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src/qweb/base_directives.ts
+2 -1
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@@ -326,7 +326,8 @@ QWeb.addDirective({
ctx.addLine(`if (!_${arrayID}) { throw new Error('QWeb error: Invalid loop expression')}`);
let keysID = ctx.generateID();
let valuesID = ctx.generateID();
ctx.addLine(`let _${keysID} = _${valuesID} = _${arrayID};`);
ctx.addLine(`let _${keysID} = _${arrayID};`);
ctx.addLine(`let _${valuesID} = _${arrayID};`);
ctx.addIf(`!(_${arrayID} instanceof Array)`);
ctx.addLine(`_${keysID} = Object.keys(_${arrayID});`);
ctx.addLine(`_${valuesID} = Object.values(_${arrayID});`);