fix: improve code

packages/core/flow-engine/src/resources/apiResource.ts

@@ -46,6 +46,16 @@ export class APIResource<TData = any> extends FlowResource<TData> {
     this.setMeta({ loading: value });
   }
 
+  clearRequestParameters() {
+    this.request.params = {};
+    return this;
+  }
+
+  setRequestParameters(params: Record<string, any>) {
+    this.request.params = { ...this.request.params, ...params };
+    return this;
+  }
+
   setRequestMethod(method: string) {
     this.request.method = method;
     return this;
@@ -59,6 +69,13 @@ export class APIResource<TData = any> extends FlowResource<TData> {
     return this;
   }
 
+  removeRequestHeader(key: string) {
+    if (this.request.headers && key in this.request.headers) {
+      delete this.request.headers[key];
+    }
+    return this;
+  }
+
   addRequestParameter(key: string, value: any) {
     if (!this.request.params) {
       this.request.params = {};
@@ -67,6 +84,20 @@ export class APIResource<TData = any> extends FlowResource<TData> {
     return this;
   }
 
+  getRequestParameter(key: string) {
+    if (this.request.params && key in this.request.params) {
+      return this.request.params[key];
+    }
+    return null;
+  }
+
+  removeRequestParameter(key: string) {
+    if (this.request.params && key in this.request.params) {
+      delete this.request.params[key];
+    }
+    return this;
+  }
+
   setRequestBody(data: any) {
     this.request.data = data;
     return this;

packages/plugins/@nocobase/plugin-block-lowcode/src/client/CodeEditor.tsx

@@ -22,6 +22,13 @@ import { createJavaScriptLinter } from './linter';
 // 自定义自动补全函数
 const createCustomCompletion = () => {
   const contextVariables = [
+    {
+      label: 'request',
+      type: 'function',
+      info: 'Make an API request to NocoBase backend',
+      detail: '(options: RequestOptions) => Promise<Response>',
+      boost: 102,
+    },
     {
       label: 'getModelById',
       type: 'function',

packages/plugins/@nocobase/plugin-block-lowcode/src/client/LowcodeBlockFlowModel.tsx

@@ -202,10 +202,12 @@ element.innerHTML = \`
               return ctx.globals.flowEngine.getModel(uid);
             };
 
+            const request = ctx.globals.api.request.bind(ctx.globals.api);
+
             // Create a safe execution context for the code (as async function)
             // Wrap user code in an async function
             const wrappedCode = `
-              return (async function(element, ctx, model, resource, requirejs, requireAsync, loadCSS, getModelById) {
+              return (async function(element, ctx, model, resource, requirejs, requireAsync, loadCSS, getModelById, request) {
                 ${params.code}
               }).apply(this, arguments);
             `;
@@ -221,6 +223,7 @@ element.innerHTML = \`
               requireAsync,
               loadCSS,
               getModelById,
+              request,
             );
 
             ctx.model.setProps('loading', false);