next
Version:
The React Framework
103 lines (102 loc) • 5.55 kB
JavaScript
export const DISALLOWED_FORM_PROPS = [
'method',
'encType',
'target'
];
export function createFormSubmitDestinationUrl(action, formElement) {
let targetUrl;
try {
// NOTE: It might be more correct to resolve URLs relative to `document.baseURI`,
// but we already do it relative to `location.href` elsewhere:
// (see e.g. https://github.com/vercel/next.js/blob/bb0e6722f87ceb2d43015f5b8a413d0072f2badf/packages/next/src/client/components/app-router.tsx#L146)
// so it's better to stay consistent.
const base = window.location.href;
targetUrl = new URL(action, base);
} catch (err) {
throw Object.defineProperty(new Error('Cannot parse form action "' + action + '" as a URL', {
cause: err
}), "__NEXT_ERROR_CODE", {
value: "E152",
enumerable: false,
configurable: true
});
}
if (targetUrl.searchParams.size) {
// url-encoded HTML forms *overwrite* any search params in the `action` url:
//
// "Let `query` be the result of running the application/x-www-form-urlencoded serializer [...]"
// "Set parsed action's query component to `query`."
// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#submit-mutate-action
//
// We need to match that.
// (note that all other parts of the URL, like `hash`, are preserved)
targetUrl.search = '';
}
const formData = new FormData(formElement);
for (let [name, value] of formData){
if (typeof value !== 'string') {
// For file inputs, the native browser behavior is to use the filename as the value instead:
//
// "If entry's value is a File object, then let value be entry's value's name. Otherwise, let value be entry's value."
// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#converting-an-entry-list-to-a-list-of-name-value-pairs
//
if (process.env.NODE_ENV === 'development') {
console.warn("<Form> only supports file inputs if `action` is a function. File inputs cannot be used if `action` is a string, " + "because files cannot be encoded as search params.");
}
value = value.name;
}
targetUrl.searchParams.append(name, value);
}
return targetUrl;
}
export function checkFormActionUrl(action, source) {
const aPropName = source === 'action' ? "an `action`" : "a `formAction`";
let testUrl;
try {
testUrl = new URL(action, 'http://n');
} catch (err) {
console.error("<Form> received " + aPropName + ' that cannot be parsed as a URL: "' + action + '".');
return;
}
// url-encoded HTML forms ignore any queryparams in the `action` url. We need to match that.
if (testUrl.searchParams.size) {
console.warn("<Form> received " + aPropName + ' that contains search params: "' + action + '". This is not supported, and they will be ignored. ' + 'If you need to pass in additional search params, use an `<input type="hidden" />` instead.');
}
}
export const isSupportedFormEncType = (value)=>value === 'application/x-www-form-urlencoded';
export const isSupportedFormMethod = (value)=>value === 'get';
export const isSupportedFormTarget = (value)=>value === '_self';
export function hasUnsupportedSubmitterAttributes(submitter) {
// A submitter can override `encType` for the form.
const formEncType = submitter.getAttribute('formEncType');
if (formEncType !== null && !isSupportedFormEncType(formEncType)) {
if (process.env.NODE_ENV === 'development') {
console.error("<Form>'s `encType` was set to an unsupported value via `formEncType=\"" + formEncType + '"`. ' + "This will disable <Form>'s navigation functionality. If you need this, use a native <form> element instead.");
}
return true;
}
// A submitter can override `method` for the form.
const formMethod = submitter.getAttribute('formMethod');
if (formMethod !== null && !isSupportedFormMethod(formMethod)) {
if (process.env.NODE_ENV === 'development') {
console.error("<Form>'s `method` was set to an unsupported value via `formMethod=\"" + formMethod + '"`. ' + "This will disable <Form>'s navigation functionality. If you need this, use a native <form> element instead.");
}
return true;
}
// A submitter can override `target` for the form.
const formTarget = submitter.getAttribute('formTarget');
if (formTarget !== null && !isSupportedFormTarget(formTarget)) {
if (process.env.NODE_ENV === 'development') {
console.error("<Form>'s `target` was set to an unsupported value via `formTarget=\"" + formTarget + '"`. ' + "This will disable <Form>'s navigation functionality. If you need this, use a native <form> element instead.");
}
return true;
}
return false;
}
export function hasReactClientActionAttributes(submitter) {
// CSR: https://github.com/facebook/react/blob/942eb80381b96f8410eab1bef1c539bed1ab0eb1/packages/react-dom-bindings/src/client/ReactDOMComponent.js#L482-L487
// SSR: https://github.com/facebook/react/blob/942eb80381b96f8410eab1bef1c539bed1ab0eb1/packages/react-dom-bindings/src/client/ReactDOMComponent.js#L2401
const action = submitter.getAttribute('formAction');
return action && /\s*javascript:/i.test(action);
}
//# sourceMappingURL=form-shared.js.map