feat(admin): add date-only content field

.changeset/date-only-field.md

@@ -0,0 +1,6 @@
+---
+"emdash": patch
+"@emdash-cms/admin": patch
+---
+
+Add a date-only content field type that stores `YYYY-MM-DD` values and renders as a date picker in the admin.

packages/admin/src/components/ContentEditor.tsx

@@ -2041,6 +2041,18 @@ function FieldRenderer({
 				/>
 			);
 
+		case "date":
+			return (
+				<Input
+					label={label}
+					id={id}
+					type="date"
+					value={typeof value === "string" ? value.slice(0, 10) : ""}
+					onChange={(e) => handleChange(e.target.value)}
+					required={field.required}
+				/>
+			);
+
 		case "image": {
 			// value is either an ImageFieldValue object, a legacy string URL, or undefined
 			const imageValue =

packages/admin/src/components/FieldEditor.tsx

@@ -213,6 +213,12 @@ export function FieldEditor({ open, onOpenChange, field, onSave, isSaving }: Fie
 			description: t`Date and time picker`,
 			icon: Calendar,
 		},
+		{
+			type: "date",
+			label: t`Date Only`,
+			description: t`Date picker without time`,
+			icon: Calendar,
+		},
 		{
 			type: "select",
 			label: t`Select`,
@@ -623,6 +629,7 @@ export function FieldEditor({ open, onOpenChange, field, onSave, isSaving }: Fie
 															number: t`Number`,
 															integer: t`Integer`,
 															boolean: t`Boolean`,
+															date: t`Date Only`,
 															datetime: t`Date & Time`,
 															select: t`Select`,
 															url: t`URL`,

packages/admin/src/components/RepeaterField.tsx

@@ -369,6 +369,16 @@ function SubFieldInput({ subField, value, onChange, timezone }: SubFieldInputPro
 					required={subField.required}
 				/>
 			);
+		case "date":
+			return (
+				<Input
+					label={subField.label}
+					type="date"
+					value={typeof value === "string" ? value.slice(0, 10) : ""}
+					onChange={(e) => onChange(e.target.value)}
+					required={subField.required}
+				/>
+			);
 		case "select": {
 			// Searchable combobox so long option lists (e.g. taxonomy-derived
 			// options) stay usable inside repeater rows, rather than a plain

packages/admin/src/lib/api/schema.ts

@@ -14,6 +14,7 @@ export type FieldType =
 	| "number"
 	| "integer"
 	| "boolean"
+	| "date"
 	| "datetime"
 	| "select"
 	| "multiSelect"

packages/admin/tests/components/ContentEditor.test.tsx

@@ -984,6 +984,14 @@ describe("ContentEditor", () => {
 			await expect.element(input).toHaveAttribute("type", "datetime-local");
 		});
 
+		it("renders date fields as date-only inputs", async () => {
+			const screen = await renderEditor({
+				fields: { event_date: { kind: "date", label: "Event date" } },
+			});
+			const input = screen.getByLabelText("Event date");
+			await expect.element(input).toHaveAttribute("type", "date");
+		});
+
 		it("displays a stored ISO datetime in the datetime-local input", async () => {
 			// The validator stores datetimes as full ISO 8601 with "Z" + millis,
 			// but <input type="datetime-local"> only accepts "YYYY-MM-DDTHH:mm".
@@ -1035,6 +1043,30 @@ describe("ContentEditor", () => {
 			);
 		});
 
+		it("saves date fields back as YYYY-MM-DD without a time", async () => {
+			const onSave = vi.fn();
+			const screen = await renderEditor({
+				isNew: true,
+				onSave,
+				fields: {
+					title: { kind: "string", label: "Title", required: true },
+					event_date: { kind: "date", label: "Event date" },
+				},
+			});
+
+			await screen.getByLabelText("Title").fill("Event");
+			await screen.getByLabelText("Event date").fill("2026-02-26");
+			await screen.getByRole("button", { name: "Save" }).first().click();
+
+			expect(onSave).toHaveBeenCalledWith(
+				expect.objectContaining({
+					data: expect.objectContaining({
+						event_date: "2026-02-26",
+					}),
+				}),
+			);
+		});
+
 		it("renders json fields as a textarea", async () => {
 			const screen = await renderEditor({
 				fields: { metadata: { kind: "json", label: "Metadata" } },

packages/admin/tests/components/FieldEditor.test.tsx

@@ -16,6 +16,7 @@ const FIELD_TYPE_REGEXES = [
 	/Integer Whole number/,
 	/Boolean True\/false toggle/,
 	/Date & Time/,
+	/Date Only/,
 	/^Select Single choice/,
 	/Multi Select/,
 	/Rich Text/,
@@ -85,7 +86,7 @@ describe("FieldEditor", () => {
 				.toBeInTheDocument();
 		});
 
-		it("shows all 14 field types as buttons", async () => {
+		it("shows all 15 field types as buttons", async () => {
 			const screen = await render(<FieldEditor {...defaultProps} />);
 			// Each type renders as a button with label and description
 			for (const name of FIELD_TYPE_REGEXES) {

packages/admin/tests/components/RepeaterField.test.tsx

@@ -42,6 +42,41 @@ describe("RepeaterField", () => {
 			]);
 		});
 	});
+
+	describe("date sub-field", () => {
+		it("renders date-only values in a date input", async () => {
+			const screen = await render(
+				<RepeaterField
+					label="Events"
+					id="events"
+					value={[{ event_date: "2026-02-26" }]}
+					onChange={vi.fn()}
+					subFields={[{ slug: "event_date", type: "date", label: "Event date" }]}
+				/>,
+			);
+			const input = screen.getByLabelText("Event date");
+			await expect.element(input).toHaveAttribute("type", "date");
+			await expect.element(input).toHaveValue("2026-02-26");
+		});
+
+		it("emits YYYY-MM-DD without a time on change", async () => {
+			const onChange = vi.fn();
+			const screen = await render(
+				<RepeaterField
+					label="Events"
+					id="events"
+					value={[{ event_date: "" }]}
+					onChange={onChange}
+					subFields={[{ slug: "event_date", type: "date", label: "Event date" }]}
+				/>,
+			);
+			await screen.getByLabelText("Event date").fill("2026-02-26");
+
+			expect(onChange).toHaveBeenLastCalledWith([
+				expect.objectContaining({ event_date: "2026-02-26" }),
+			]);
+		});
+	});
 });
 
 /**

packages/core/src/api/handlers/manifest.ts

@@ -42,6 +42,7 @@ const FIELD_TYPE_TO_KIND: Record<FieldType, string> = {
 	number: "number",
 	integer: "number",
 	boolean: "boolean",
+	date: "date",
 	datetime: "datetime",
 	select: "select",
 	multiSelect: "multiSelect",
@@ -225,6 +226,9 @@ function extractFieldType(name: string, schema: unknown): FieldDescriptor {
 	if (schema.isReference) {
 		return { kind: "reference", label: formatLabel(name) };
 	}
+	if (schema.isDateOnly) {
+		return { kind: "date", label: formatLabel(name) };
+	}
 
 	// Handle standard Zod types
 	const def = isObject(schema._def) ? schema._def : undefined;

packages/core/src/api/schemas/schema.ts

@@ -43,6 +43,7 @@ const fieldTypeValues = z.enum([
 	"number",
 	"integer",
 	"boolean",
+	"date",
 	"datetime",
 	"select",
 	"multiSelect",
@@ -66,6 +67,7 @@ const repeaterSubFieldSchema = z.object({
 		"number",
 		"integer",
 		"boolean",
+		"date",
 		"datetime",
 		"select",
 		"image",

packages/core/src/cli/commands/schema.ts

@@ -160,7 +160,7 @@ const addFieldCommand = defineCommand({
 		type: {
 			type: "string",
 			description:
-				"Field type (string, text, number, integer, boolean, datetime, image, reference, portableText, json)",
+				"Field type (string, text, number, integer, boolean, date, datetime, image, reference, portableText, json)",
 			required: true,
 		},
 		label: {

packages/core/src/fields/date.ts

@@ -0,0 +1,68 @@
+import { z } from "astro/zod";
+
+import type { FieldDefinition, FieldUIHints } from "./types.js";
+
+const DATE_ONLY_PATTERN = /^\d{4}-\d{2}-\d{2}$/;
+
+export interface DateOptions {
+	required?: boolean;
+	min?: string | Date;
+	max?: string | Date;
+	helpText?: string;
+}
+
+function toDateOnly(value: string | Date): string {
+	if (value instanceof Date) {
+		const year = value.getFullYear();
+		const month = String(value.getMonth() + 1).padStart(2, "0");
+		const day = String(value.getDate()).padStart(2, "0");
+		return `${year}-${month}-${day}`;
+	}
+	return value;
+}
+
+function isValidDateOnly(value: string): boolean {
+	if (!DATE_ONLY_PATTERN.test(value)) return false;
+	const parsed = new Date(`${value}T00:00:00.000Z`);
+	return !Number.isNaN(parsed.getTime()) && parsed.toISOString().slice(0, 10) === value;
+}
+
+/**
+ * Date field - date picker without a time component.
+ */
+export function date(options: DateOptions = {}): FieldDefinition<string> {
+	const min = options.min ? toDateOnly(options.min) : undefined;
+	const max = options.max ? toDateOnly(options.max) : undefined;
+	let dateSchema = z
+		.string()
+		.regex(DATE_ONLY_PATTERN, "Must be a date in YYYY-MM-DD format")
+		.refine(isValidDateOnly, "Invalid date");
+
+	if (min !== undefined) {
+		dateSchema = dateSchema.refine((value) => value >= min, "Date is too early");
+	}
+
+	if (max !== undefined) {
+		dateSchema = dateSchema.refine((value) => value <= max, "Date is too late");
+	}
+
+	const markedSchema = dateSchema as z.ZodTypeAny & { isDateOnly?: true };
+	markedSchema.isDateOnly = true;
+
+	const schema: z.ZodTypeAny = options.required ? markedSchema : markedSchema.optional();
+
+	const ui: FieldUIHints = {
+		widget: "date",
+		helpText: options.helpText,
+		min,
+		max,
+	};
+
+	return {
+		type: "date",
+		columnType: "TEXT",
+		schema,
+		options,
+		ui,
+	};
+}

packages/core/src/fields/index.ts

@@ -6,6 +6,7 @@ export { integer } from "./integer.js";
 export { boolean } from "./boolean.js";
 export { select } from "./select.js";
 export { multiSelect } from "./multiselect.js";
+export { date } from "./date.js";
 export { datetime } from "./datetime.js";
 export { slug } from "./slug.js";
 export { image } from "./image.js";
@@ -35,6 +36,7 @@ export type { IntegerOptions } from "./integer.js";
 export type { BooleanOptions } from "./boolean.js";
 export type { SelectOptions } from "./select.js";
 export type { MultiSelectOptions } from "./multiselect.js";
+export type { DateOptions } from "./date.js";
 export type { DatetimeOptions } from "./datetime.js";
 export type { SlugOptions } from "./slug.js";
 export type { FileOptions } from "./file.js";

packages/core/src/mcp/server.ts

@@ -1924,7 +1924,7 @@ export function createMcpServer(
 			description:
 				"Get detailed info about a collection including all field definitions. " +
 				"Fields describe the data model: name, type (string, text, number, " +
-				"boolean, datetime, portableText, image, reference, json, select, " +
+				"boolean, date, datetime, portableText, image, reference, json, select, " +
 				"multiSelect, slug), constraints, and validation rules. Use this to " +
 				"understand what data content_create and content_update expect.",
 			inputSchema: z.object({
@@ -2082,7 +2082,7 @@ export function createMcpServer(
 			description:
 				"Add a new field to a collection's schema. This adds a column to the " +
 				"database table. Field types: string (short text), text (long text), " +
-				"number (decimal), integer, boolean, datetime, select (single choice), " +
+				"number (decimal), integer, boolean, date, datetime, select (single choice), " +
 				"multiSelect (multiple), portableText (rich text), image, file, " +
 				"reference (link to another collection), json, slug (URL-safe id). " +
 				"For select/multiSelect, provide choices in validation.options array.",
@@ -2100,6 +2100,7 @@ export function createMcpServer(
 						"number",
 						"integer",
 						"boolean",
+						"date",
 						"datetime",
 						"select",
 						"multiSelect",

packages/core/src/plugins/manifest-schema.ts

@@ -94,6 +94,7 @@ const FIELD_TYPES = [
 	"number",
 	"integer",
 	"boolean",
+	"date",
 	"datetime",
 	"select",
 	"multiSelect",

packages/core/src/schema/types.ts

@@ -15,6 +15,7 @@ export type FieldType =
 	| "number"
 	| "integer"
 	| "boolean"
+	| "date"
 	| "datetime"
 	| "select"
 	| "multiSelect"
@@ -36,6 +37,7 @@ export const FIELD_TYPES: readonly FieldType[] = [
 	"number",
 	"integer",
 	"boolean",
+	"date",
 	"datetime",
 	"select",
 	"multiSelect",
@@ -79,6 +81,7 @@ export const FIELD_TYPE_TO_COLUMN: Record<FieldType, ColumnType> = {
 	number: "REAL",
 	integer: "INTEGER",
 	boolean: "INTEGER",
+	date: "TEXT",
 	datetime: "TEXT",
 	select: "TEXT",
 	multiSelect: "JSON",
@@ -126,6 +129,7 @@ export interface RepeaterSubField {
 		| "number"
 		| "integer"
 		| "boolean"
+		| "date"
 		| "datetime"
 		| "select"
 		| "image";
@@ -142,6 +146,7 @@ export const REPEATER_SUB_FIELD_TYPES = [
 	"number",
 	"integer",
 	"boolean",
+	"date",
 	"datetime",
 	"select",
 	"image",