a tool for shared writing and social publishing
use iframely for urls in embed block editor
Jared Pereira
(Nov 25, 2025, 12:34 AM EST)
cb9348fb
f3e2a86d
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-16
+65
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components/Blocks/EmbedBlock.tsx
+65
-16
components/Blocks/EmbedBlock.tsx
···
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import { Input } from "components/Input";
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import { isUrl } from "src/utils/isURL";
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import { elementId } from "src/utils/elementId";
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import { deleteBlock } from "./DeleteBlock";
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import { focusBlock } from "src/utils/focusBlock";
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import { useDrag } from "src/hooks/useDrag";
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import { BlockEmbedSmall } from "components/Icons/BlockEmbedSmall";
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import { CheckTiny } from "components/Icons/CheckTiny";
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import { DotLoader } from "components/utils/DotLoader";
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import {
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LinkPreviewBody,
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LinkPreviewMetadataResult,
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} from "app/api/link_previews/route";
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export const EmbedBlock = (props: BlockProps & { preview?: boolean }) => {
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let { permissions } = useEntitySetContext();
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let entity_set = useEntitySetContext();
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let [linkValue, setLinkValue] = useState("");
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let [loading, setLoading] = useState(false);
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let { rep } = useReplicache();
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let submit = async () => {
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let entity = props.entityID;
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}
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let link = linkValue;
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if (!linkValue.startsWith("http")) link = `https://${linkValue}`;
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// these mutations = simpler subset of addLinkBlock
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if (!rep) return;
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await rep.mutate.assertFact({
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entity: entity,
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attribute: "block/type",
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data: { type: "block-type-union", value: "embed" },
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});
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await rep?.mutate.assertFact({
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entity: entity,
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attribute: "embed/url",
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data: {
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type: "string",
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value: link,
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},
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});
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// Try to get embed URL from iframely, fallback to direct URL
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setLoading(true);
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try {
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let res = await fetch("/api/link_previews", {
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headers: { "Content-Type": "application/json" },
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method: "POST",
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body: JSON.stringify({ url: link, type: "meta" } as LinkPreviewBody),
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});
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let embedUrl = link;
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let embedHeight = 360;
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if (res.status === 200) {
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let data = await (res.json() as LinkPreviewMetadataResult);
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if (data.success && data.data.links?.player?.[0]) {
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let embed = data.data.links.player[0];
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embedUrl = embed.href;
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embedHeight = embed.media?.height || 300;
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}
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}
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await rep.mutate.assertFact([
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{
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entity: entity,
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attribute: "embed/url",
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data: {
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type: "string",
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value: embedUrl,
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},
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},
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{
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entity: entity,
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attribute: "embed/height",
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data: {
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type: "number",
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value: embedHeight,
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},
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},
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]);
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} catch {
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// On any error, fallback to using the URL directly
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await rep.mutate.assertFact([
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{
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entity: entity,
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attribute: "embed/url",
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data: {
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type: "string",
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value: link,
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},
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},
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]);
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} finally {
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setLoading(false);
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}
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};
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let smoker = useSmoker();
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···
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<form
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onSubmit={(e) => {
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e.preventDefault();
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if (loading) return;
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let rect = document
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.getElementById("embed-block-submit")
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?.getBoundingClientRect();
···
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<button
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type="submit"
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id="embed-block-submit"
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disabled={loading}
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className={`p-1 ${isSelected && !isLocked ? "text-accent-contrast" : "text-border"}`}
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onMouseDown={(e) => {
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e.preventDefault();
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if (loading) return;
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if (!linkValue || linkValue === "") {
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smoker({
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error: true,
···
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submit();
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}}
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>
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<CheckTiny />
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{loading ? <DotLoader /> : <CheckTiny />}
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</button>
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</div>
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</form>