DEV: Add support for array params in topic-list finder (#21578)

It wasn't possible (at least in any reasonable way) to pass params like `tags`. Also removes the export and inlines the function as that was used only to test the function and the test is gone.

app/assets/javascripts/discourse/app/adapters/topic-list.js

@@ -2,15 +2,24 @@ import PreloadStore from "discourse/lib/preload-store";
 import RestAdapter from "discourse/adapters/rest";
 import { ajax } from "discourse/lib/ajax";
 
-export function finderFor(filter, params) {
-  return function () {
+export default RestAdapter.extend({
+  find(store, type, { filter, params }) {
+    return PreloadStore.getAndRemove("topic_list", () => {
       let url = `/${filter}.json`;
 
       if (params) {
         const urlSearchParams = new URLSearchParams();
 
         for (const [key, value] of Object.entries(params)) {
-        if (typeof value !== "undefined") {
+          if (typeof value === "undefined") {
+            continue;
+          }
+
+          if (Array.isArray(value)) {
+            for (const arrayValue of value) {
+              urlSearchParams.append(`${key}[]`, arrayValue);
+            }
+          } else {
             urlSearchParams.set(key, value);
           }
         }
@@ -23,18 +32,7 @@ export function finderFor(filter, params) {
       }
 
       return ajax(url);
-  };
-}
-
-export default RestAdapter.extend({
-  find(store, type, findArgs) {
-    const filter = findArgs.filter;
-    const params = findArgs.params;
-
-    return PreloadStore.getAndRemove(
-      "topic_list",
-      finderFor(filter, params)
-    ).then(function (result) {
+    }).then((result) => {
       result.filter = filter;
       result.params = params;
       return result;

app/assets/javascripts/discourse/app/models/topic-list.js

@@ -7,6 +7,7 @@ import { ajax } from "discourse/lib/ajax";
 import { getOwner } from "discourse-common/lib/get-owner";
 import { isEmpty } from "@ember/utils";
 import { notEmpty } from "@ember/object/computed";
+import deprecated from "discourse-common/lib/deprecated";
 
 function extractByKey(collection, klass) {
   const retval = {};
@@ -195,6 +196,15 @@ TopicList.reopenClass({
   },
 
   find(filter, params) {
+    deprecated(
+      `TopicList.find is deprecated. Use \`findFiltered("topicList")\` on the \`store\` service instead.`,
+      {
+        id: "topic-list-find",
+        since: "3.1.0.beta5",
+        dropFrom: "3.2.0.beta1",
+      }
+    );
+
     const store = getOwner(this).lookup("service:store");
     return store.findFiltered("topicList", { filter, params });
   },

app/assets/javascripts/discourse/tests/unit/services/store-test.js

@@ -1,7 +1,10 @@
 import { module, test } from "qunit";
 import { setupTest } from "ember-qunit";
 import { getOwner } from "discourse-common/lib/get-owner";
-import pretender, { response } from "discourse/tests/helpers/create-pretender";
+import pretender, {
+  fixturesByUrl,
+  response,
+} from "discourse/tests/helpers/create-pretender";
 
 module("Unit | Service | store", function (hooks) {
   setupTest(hooks);
@@ -236,4 +239,28 @@ module("Unit | Service | store", function (hooks) {
     const users = await store.findAll("user");
     assert.strictEqual(users.objectAt(0).username, "souna");
   });
+
+  test("findFiltered", async function (assert) {
+    pretender.get("/topics/created-by/trout.json", ({ queryParams }) => {
+      assert.deepEqual(queryParams, {
+        order: "latest",
+        tags: ["dev", "bug"],
+      });
+      return response(fixturesByUrl["/c/bug/1/l/latest.json"]);
+    });
+
+    const store = getOwner(this).lookup("service:store");
+    const result = await store.findFiltered("topicList", {
+      filter: "topics/created-by/trout",
+      params: {
+        order: "latest",
+        tags: ["dev", "bug"],
+      },
+    });
+
+    assert.true(result.loaded);
+    assert.true("topic_list" in result);
+    assert.true(Array.isArray(result.topics));
+    assert.strictEqual(result.filter, "topics/created-by/trout");
+  });
 });