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[IMP] runtime: add support for Map and other iterables in t-foreach

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closes: #1352
This commit is contained in:
Samuel Degueldre
2023-07-12 09:37:11 +02:00
committed by Géry Debongnie
parent 7538aeae0e
commit 836e12b1c5
4 changed files with 196 additions and 15 deletions
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src/runtime/template_helpers.ts
+15 -7
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@@ -60,18 +60,26 @@ function withKey(elem: any, k: string) {
return elem;
}
function prepareList(collection: any): [any[], any[], number, any[]] {
let keys: any[];
let values: any[];
function prepareList(collection: unknown): [unknown[], unknown[], number, undefined[]] {
let keys: unknown[];
let values: unknown[];
if (Array.isArray(collection)) {
keys = collection;
values = collection;
} else if (collection) {
values = Object.keys(collection);
keys = Object.values(collection);
} else if (collection instanceof Map) {
keys = [...collection.keys()];
values = [...collection.values()];
} else if (collection && typeof collection === "object") {
if (Symbol.iterator in collection) {
keys = [...(<Iterable<unknown>>collection)];
values = keys;
} else {
values = Object.keys(collection);
keys = Object.values(collection);
}
} else {
throw new OwlError("Invalid loop expression");
throw new OwlError(`Invalid loop expression: "${collection}" is not iterable`);
}
const n = values.length;
return [keys, values, n, new Array(n)];