fix(remix-react): Form's method shouldn't be ignored

contributors.yml

@@ -444,3 +444,4 @@
 - zachdtaylor
 - zainfathoni
 - zhe
+- maxschwarzmueller

integration/form-test.ts

@@ -326,10 +326,13 @@ test.describe("Forms", () => {
             return (
               <>
                 <Form method="post">
-                  <button type="submit" formMethod="get">Submit with GET</button>
+                  <button type="submit" formMethod="get">Replace POST with GET</button>
                 </Form>
                 <Form method="get">
-                  <button type="submit" formMethod="post">Submit with POST</button>
+                  <button type="submit" formMethod="post">Replace GET with POST</button>
+                </Form>
+                <Form method="delete">
+                  <button type="submit" formMethod="post">Replace DELETE with POST</button>
                 </Form>
 
                 <pre>{actionData || loaderData}</pre>
@@ -339,17 +342,19 @@ test.describe("Forms", () => {
         `,
 
         "app/routes/form-method.jsx": js`
-          import { Form, useActionData } from "@remix-run/react";
+          import { Form, useActionData, useSearchParams } from "@remix-run/react";
           import { json } from "@remix-run/node";
 
           export function action({ request }) {
             return json(request.method)
           }
           export default function() {
             let actionData = useActionData();
+            let [searchParams] = useSearchParams();
+            let formMethod = searchParams.get('method') || 'post';
             return (
               <>
-                <Form method="post">
+                <Form method={formMethod}>
                   <button type="submit">Submit</button>
                 </Form>
                 <pre>{actionData}</pre>
@@ -359,17 +364,19 @@ test.describe("Forms", () => {
         `,
 
         "app/routes/button-form-method.jsx": js`
-          import { Form, useActionData } from "@remix-run/react";
+          import { Form, useActionData, useSearchParams } from "@remix-run/react";
           import { json } from "@remix-run/node";
 
           export function action({ request }) {
             return json(request.method)
           }
           export default function() {
             let actionData = useActionData();
+            let [searchParams] = useSearchParams();
+            let formMethod = searchParams.get('method') || 'post';
             return (
               <>
-                <Form>
+                <Form method={formMethod}>
                   <button type="submit" formMethod="post">Submit</button>
                 </Form>
                 <pre>{actionData}</pre>
@@ -933,31 +940,49 @@ test.describe("Forms", () => {
       test("submits with GET instead of POST", async ({ page }) => {
         let app = new PlaywrightFixture(appFixture, page);
         await app.goto("/submitter-formmethod");
-        await app.clickElement("text=Submit with GET");
+        await app.clickElement("text=Replace POST with GET");
         await page.waitForLoadState("load");
         expect(await app.getHtml("pre")).toBe("<pre>GET</pre>");
       });
 
       test("submits with POST instead of GET", async ({ page }) => {
         let app = new PlaywrightFixture(appFixture, page);
         await app.goto("/submitter-formmethod");
-        await app.clickElement("text=Submit with POST");
+        await app.clickElement("text=Replace GET with POST");
+        await page.waitForLoadState("load");
+        expect(await app.getHtml("pre")).toBe("<pre>POST</pre>");
+      });
+
+      test("submits with POST instead of DELETE", async ({ page }) => {
+        let app = new PlaywrightFixture(appFixture, page);
+        await app.goto("/submitter-formmethod");
+        await app.clickElement("text=Replace DELETE with POST");
         await page.waitForLoadState("load");
         expect(await app.getHtml("pre")).toBe("<pre>POST</pre>");
       });
     });
 
     test("uses the form `method` attribute", async ({ page }) => {
       let app = new PlaywrightFixture(appFixture, page);
-      await app.goto("/form-method");
+      await app.goto("/form-method?method=delete");
+      await app.clickElement("button");
+      await page.waitForLoadState("load");
+      expect(await app.getHtml("pre")).toMatch("DELETE");
+
+      await app.goto("/form-method?method=post");
       await app.clickElement("button");
       await page.waitForLoadState("load");
       expect(await app.getHtml("pre")).toMatch("POST");
     });
 
     test("uses the button `formmethod` attribute", async ({ page }) => {
       let app = new PlaywrightFixture(appFixture, page);
-      await app.goto("/button-form-method");
+      await app.goto("/button-form-method?method=get");
+      await app.clickElement("button");
+      await page.waitForLoadState("load");
+      expect(await app.getHtml("pre")).toMatch("POST");
+
+      await app.goto("/button-form-method?method=delete");
       await app.clickElement("button");
       await page.waitForLoadState("load");
       expect(await app.getHtml("pre")).toMatch("POST");

packages/remix-react/components.tsx

@@ -988,7 +988,13 @@ let FormImpl = React.forwardRef<HTMLFormElement, FormImplProps>(
                 let submitter = (event as unknown as HTMLSubmitEvent)
                   .nativeEvent.submitter as HTMLFormSubmitter | null;
 
-                submit(submitter || event.currentTarget, { replace });
+                let submitMethod =
+                  (submitter?.formMethod as FormMethod | undefined) || method;
+
+                submit(submitter || event.currentTarget, {
+                  method: submitMethod,
+                  replace,
+                });
               }
         }
         {...props}