feat(platform-response-filter): expose only .transform method to faci…

…litate OverrideProvider usage

packages/platform/platform-http/src/common/services/PlatformHandler.ts

@@ -124,8 +124,7 @@ export class PlatformHandler {
         const {response} = $ctx;
 
         if (!$ctx.isDone()) {
-          let data = await this.responseFilter.serialize($ctx.data, $ctx as any);
-          data = await this.responseFilter.transform(data, $ctx as any);
+          const data = await this.responseFilter.transform($ctx.data, $ctx as any);
           response.body(data);
         }
       });

packages/platform/platform-response-filter/src/index.ts

@@ -9,4 +9,3 @@ export * from "./interfaces/ResponseFilterMethods.js";
 export * from "./services/PlatformContentTypeResolver.js";
 export * from "./services/PlatformContentTypesContainer.js";
 export * from "./services/PlatformResponseFilter.js";
-export * from "./utils/renderView.js";

packages/platform/platform-response-filter/src/services/PlatformResponseFilter.spec.ts

@@ -1,7 +1,7 @@
 import {catchAsyncError} from "@tsed/core";
 import {PlatformTest} from "@tsed/platform-http/testing";
 import {Context} from "@tsed/platform-params";
-import {EndpointMetadata, Get, Returns, View} from "@tsed/schema";
+import {EndpointMetadata, Get, Ignore, Property, Returns, View} from "@tsed/schema";
 
 import {ResponseFilter} from "../decorators/responseFilter.js";
 import {ResponseFilterMethods} from "../interfaces/ResponseFilterMethods.js";
@@ -29,7 +29,7 @@ class AllFilter implements ResponseFilterMethods {
 }
 
 describe("PlatformResponseFilter", () => {
-  describe("transform()", () => {
+  describe("transform() with transform", () => {
     describe("when filter list is given", () => {
       beforeEach(() =>
         PlatformTest.create({
@@ -164,7 +164,6 @@ describe("PlatformResponseFilter", () => {
         });
       });
     });
-
     describe("when filter list is not given", () => {
       beforeEach(() =>
         PlatformTest.create({
@@ -228,18 +227,14 @@ describe("PlatformResponseFilter", () => {
       });
     });
   });
-  describe("serialize()", () => {
-    beforeEach(() =>
-      PlatformTest.create({
-        responseFilters: [CustomJsonFilter, AllFilter, ApplicationJsonFilter]
-      })
-    );
+  describe("transform() without transform", () => {
+    beforeEach(() => PlatformTest.create());
     afterEach(() => PlatformTest.reset());
     it("should transform value", async () => {
       const platformResponseFilter = PlatformTest.get<PlatformResponseFilter>(PlatformResponseFilter);
       const ctx = PlatformTest.createRequestContext();
 
-      const result = await platformResponseFilter.serialize({test: "test"}, ctx);
+      const result = await platformResponseFilter.transform({test: "test"}, ctx);
 
       expect(result).toEqual({test: "test"});
     });
@@ -255,7 +250,7 @@ describe("PlatformResponseFilter", () => {
 
       vi.spyOn(ctx.endpoint, "getResponseOptions");
 
-      const result = await platformResponseFilter.serialize({test: "test"}, ctx);
+      const result = await platformResponseFilter.transform({test: "test"}, ctx);
 
       expect(result).toEqual({test: "test"});
       expect(ctx.endpoint.getResponseOptions).toHaveBeenCalledWith(200, {includes: undefined});
@@ -274,7 +269,7 @@ describe("PlatformResponseFilter", () => {
 
       ctx.request.query.includes = [];
 
-      const result = await platformResponseFilter.serialize({test: "test"}, ctx);
+      const result = await platformResponseFilter.transform({test: "test"}, ctx);
 
       expect(result).toEqual({test: "test"});
       expect(ctx.endpoint.getResponseOptions).toHaveBeenCalledWith(200, {includes: []});
@@ -293,7 +288,7 @@ describe("PlatformResponseFilter", () => {
 
       ctx.request.query.includes = ["test,test2"];
 
-      const result = await platformResponseFilter.serialize({test: "test"}, ctx);
+      const result = await platformResponseFilter.transform({test: "test"}, ctx);
 
       expect(result).toEqual({test: "test"});
       expect(ctx.endpoint.getResponseOptions).toHaveBeenCalledWith(200, {
@@ -312,7 +307,7 @@ describe("PlatformResponseFilter", () => {
       ctx.endpoint = EndpointMetadata.get(Test, "test");
       vi.spyOn(ctx.response, "render").mockResolvedValue("template");
 
-      const result = await platformResponseFilter.serialize({test: "test"}, ctx);
+      const result = await platformResponseFilter.transform({test: "test"}, ctx);
 
       expect(result).toEqual("template");
     });
@@ -328,9 +323,62 @@ describe("PlatformResponseFilter", () => {
       ctx.endpoint = EndpointMetadata.get(Test, "test");
       vi.spyOn(ctx.response, "render").mockRejectedValue(new Error("parsing error"));
 
-      const result = await catchAsyncError(() => platformResponseFilter.serialize({test: "test"}, ctx));
+      const result = await catchAsyncError(() => platformResponseFilter.transform({test: "test"}, ctx));
 
       expect(result?.message).toEqual("Template rendering error: Test.test()\nError: parsing error");
     });
+
+    it("should render content", async () => {
+      class Model {
+        @Property()
+        data: string;
+
+        @Ignore()
+        test: string;
+      }
+
+      class Test {
+        @Get("/")
+        @View("view", {options: "options"})
+        @Returns(200, Model)
+        test() {}
+      }
+
+      const platformResponseFilter = PlatformTest.get<PlatformResponseFilter>(PlatformResponseFilter);
+      const ctx = PlatformTest.createRequestContext();
+
+      ctx.endpoint = EndpointMetadata.get(Test, "test");
+
+      vi.spyOn(ctx.response, "render").mockResolvedValue("HTML");
+
+      ctx.data = {data: "data"};
+
+      await platformResponseFilter.transform(ctx.data, ctx);
+
+      expect(ctx.response.render).toHaveBeenCalledWith("view", {
+        $ctx: ctx,
+        data: "data",
+        options: "options"
+      });
+    });
+    it("should render content and throw an error", async () => {
+      class Test {
+        @Get("/")
+        @View("view", {options: "options"})
+        test() {}
+      }
+
+      const platformResponseFilter = PlatformTest.get<PlatformResponseFilter>(PlatformResponseFilter);
+      const ctx = PlatformTest.createRequestContext();
+      ctx.endpoint = EndpointMetadata.get(Test, "test");
+
+      vi.spyOn(ctx.response, "render").mockRejectedValue(new Error("parser error"));
+
+      ctx.data = {data: "data"};
+
+      let actualError: any = await catchAsyncError(() => platformResponseFilter.transform(ctx.data, ctx));
+
+      expect(actualError.message).toEqual("Template rendering error: Test.test()\nError: parser error");
+    });
   });
 });

packages/platform/platform-response-filter/src/services/PlatformResponseFilter.ts

@@ -2,11 +2,14 @@ import {isSerializable} from "@tsed/core";
 import {BaseContext, constant, inject, injectable} from "@tsed/di";
 import {serialize} from "@tsed/json-mapper";
 
-import {renderView} from "../utils/renderView.js";
+import {TemplateRenderError} from "../errors/TemplateRenderError.js";
 import {PLATFORM_CONTENT_TYPE_RESOLVER} from "./PlatformContentTypeResolver.js";
 import {PLATFORM_CONTENT_TYPES_CONTAINER} from "./PlatformContentTypesContainer.js";
 
 /**
+ * PlatformResponseFilter is responsible for transforming the response data
+ * to the appropriate format based on the endpoint metadata and context.
+ *
  * @platform
  */
 export class PlatformResponseFilter {
@@ -15,57 +18,82 @@ export class PlatformResponseFilter {
   protected contentTypeResolver = inject<PLATFORM_CONTENT_TYPE_RESOLVER>(PLATFORM_CONTENT_TYPE_RESOLVER);
 
   /**
-   * Call filters to transform data
-   * @param data
-   * @param ctx
+   * Transform the data to the right format.
+   * @param data The data to transform.
+   * @param $ctx The context.
    */
-  transform(data: unknown, ctx: BaseContext) {
-    const {response} = ctx;
+  async transform(data: unknown, $ctx: BaseContext): Promise<unknown> {
+    const {endpoint} = $ctx;
 
-    if (ctx.endpoint?.operation) {
-      const bestContentType = this.contentTypeResolver(data, ctx);
+    if (endpoint) {
+      if (endpoint.view) {
+        data = await this.renderView(data, $ctx);
+      } else if (isSerializable(data)) {
+        data = await this.serialize(data, $ctx);
+      }
+    }
 
-      bestContentType && response.contentType(bestContentType);
+    return this.resolve(data, $ctx);
+  }
 
-      const resolved = this.container.resolve(bestContentType);
+  /**
+   * Render the view with the given data.
+   * @param data The data to render.
+   * @param $ctx The context.
+   * @protected
+   */
+  protected async renderView(data: unknown, $ctx: BaseContext) {
+    const {response, endpoint} = $ctx;
+    try {
+      const {path, options} = endpoint.view;
 
-      if (resolved) {
-        return resolved.transform(data, ctx);
-      }
+      return await response.render(path, {...options, ...(data as object), $ctx});
+    } catch (err) {
+      throw new TemplateRenderError(endpoint.targetName, endpoint.propertyKey, err);
     }
-
-    return data;
   }
 
   /**
    * Serialize data before calling filters
    * @param data
    * @param ctx
    */
-  async serialize(data: unknown, ctx: BaseContext) {
+  protected async serialize(data: unknown, ctx: BaseContext) {
     const {response, endpoint} = ctx;
 
-    if (endpoint) {
-      if (endpoint.view) {
-        data = await renderView(data, ctx);
-      } else if (isSerializable(data)) {
-        const responseOpts = endpoint.getResponseOptions(response.statusCode, {
-          includes: this.getIncludes(ctx)
-        });
-
-        data = serialize(data, {
-          useAlias: true,
-          additionalProperties: this.additionalProperties,
-          ...responseOpts,
-          endpoint: true
-        });
+    const responseOpts = endpoint.getResponseOptions(response.statusCode, {
+      includes: this.getIncludes(ctx)
+    });
+
+    data = serialize(data, {
+      useAlias: true,
+      additionalProperties: this.additionalProperties,
+      ...responseOpts,
+      endpoint: true
+    });
+
+    return data;
+  }
+
+  protected resolve(data: any, ctx: BaseContext) {
+    const {response} = ctx;
+
+    if (ctx.endpoint?.operation) {
+      const bestContentType = this.contentTypeResolver(data, ctx);
+
+      bestContentType && response.contentType(bestContentType);
+
+      const resolved = this.container.resolve(bestContentType);
+
+      if (resolved) {
+        return resolved.transform(data, ctx);
       }
     }
 
     return data;
   }
 
-  private getIncludes(ctx: BaseContext) {
+  protected getIncludes(ctx: BaseContext) {
     if (ctx.request.query.includes) {
       return [].concat(ctx.request.query.includes).flatMap((include: string) => include.split(","));
     }

packages/third-parties/formio/src/components/AlterActions.ts

@@ -126,7 +126,6 @@ export class AlterActions implements AlterHook {
     if (!$ctx.isDone()) {
       setResponseHeaders($ctx);
 
-      data = await this.responseFilter.serialize(data, $ctx as any);
       data = await this.responseFilter.transform(data, $ctx as any);
 
       response.body(data);