输入与表单 · 17 / 64

Form

ui.widgets.FormOf(T)

类型化表单状态、字段元信息和验证时机。

BEHAVIOR CONTRACT

业务值、dirty / touched、错误与 on_blur / on_submit 验证不需要散落在节点回调里。

RECORDED INTERACTION

Harness 点击 Submit，required 字段显示校验结果。

examples/storybook/stories.zig:3140

pub fn buildForm(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const a = cx.allocator;
    const c = try col(cx, 12);
    _ = try ui.widgets.FormOf(DemoForm).create(scope, .{ .name = "", .email = "" }, .{ .trigger = .on_blur });
    // 表单字段 UI 用 Input 展示（FormOf 管校验状态；此 story 重在展示字段布局）
    try c.appendChild(a, try W.Input(.{ .label_text = "Name", .placeholder = "Full name", .width = 320, .required = true }).mount(scope, cx));
    try c.appendChild(a, try W.Input(.{ .label_text = "Email", .input_type = .email, .placeholder = "you@example.com", .width = 320, .required = true }).mount(scope, cx));
    try c.appendChild(a, try W.Button(.{ .label = "Submit", .variant = .primary }).mount(scope, cx));
    return c;
}

在 GitHub 查看源码examples/storybook/stories.zig:3140

这是 Storybook 中该 story 的原样代码（zenit 5f9add5+wip 2026-09-30）。其中 W 即 ui.widgets，col / row / label 是 Storybook 内的布局小工具。

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