MOBILE-4362 mycourses: Fix category disappear after PTR

Author: dpalou

src/addons/block/myoverview/components/myoverview/myoverview.ts

@@ -176,6 +176,8 @@ export class AddonBlockMyOverviewComponent extends CoreBlockBaseComponent implem
      * @inheritdoc
      */
     ngOnChanges(changes: SimpleChanges): void {
+        super.ngOnChanges(changes);
+
         if (this.loaded && changes.block) {
             // Block was re-fetched, load content.
             this.reloadContent();

src/core/features/block/classes/base-block-component.ts

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { OnInit, Input, Component, Optional, Inject } from '@angular/core';
+import { OnInit, Input, Component, Optional, Inject, OnChanges, SimpleChanges } from '@angular/core';
 import { CoreLogger } from '@singletons/logger';
 import { CoreDomUtils } from '@services/utils/dom';
 import { CoreUtils } from '@services/utils/utils';
@@ -30,7 +30,7 @@ import { CorePromisedValue } from '@classes/promised-value';
 @Component({
     template: '',
 })
-export abstract class CoreBlockBaseComponent implements OnInit, ICoreBlockComponent, AsyncDirective {
+export abstract class CoreBlockBaseComponent implements OnInit, OnChanges, ICoreBlockComponent, AsyncDirective {
 
     @Input() title!: string; // The block title.
     @Input() block!: CoreCourseBlock; // The block to render.
@@ -54,15 +54,31 @@ export abstract class CoreBlockBaseComponent implements OnInit, ICoreBlockCompon
      * @inheritdoc
      */
     async ngOnInit(): Promise<void> {
-        if (this.block.configs && this.block.configs.length > 0) {
-            this.block.configs.forEach((config) => {
-                config.value = CoreTextUtils.parseJSON(config.value);
-            });
+        await this.loadContent();
+    }
 
-            this.block.configsRecord = CoreUtils.arrayToObject(this.block.configs, 'name');
+    /**
+     * @inheritdoc
+     */
+    ngOnChanges(changes: SimpleChanges): void {
+        if (changes.block) {
+            this.parseConfigs();
         }
+    }
 
-        await this.loadContent();
+    /**
+     * Parse configs if needed.
+     */
+    protected parseConfigs(): void {
+        if (!this.block.configs?.length || this.block.configsRecord) {
+            return;
+        }
+
+        this.block.configs.forEach((config) => {
+            config.value = CoreTextUtils.parseJSON(config.value);
+        });
+
+        this.block.configsRecord = CoreUtils.arrayToObject(this.block.configs, 'name');
     }
 
     /**