fix(edit): 清空字段能真正提交(undefined→null,避免 JSON 丢键)

清空 relation/select 时 el-* 常 emit undefined，进 submitData 后 JSON.stringify 丢键 →
后端收不到、看似'提交无效'。修:
- handleSave 编辑 diff 把值归一成 null(??null)，清空 → null → 提交 → 后端置空
- FieldRelation 清空归一成 null(单)/[](多)，避免 ObjectId 存 '' cast 报错

package.json

@@ -1,6 +1,6 @@
 {
     "name": "shrimp-admin",
-    "version": "0.3.2",
+    "version": "0.3.8",
     "private": true,
     "description": "Shrimp 框架前端 — 消费 ShrimpServer + ShrimpTable 契约的经典 Vue3 + Element Plus 实现",
     "main": "src/index.ts",

src/VueAdmin.ts

@@ -123,11 +123,19 @@ export class VueAdmin extends ShrimpClient {
     userName = ''
     config: ShrimpAdminConfig
     langList: { lang: string; name: string }[]
+    /** 已注册成功的模块路由(moduleKey → IRouteInfo)，供 relation 跳转/单项查看解析路由 */
+    moduleRoutes = new Map<string, IRouteInfo>()
 
     getFieldComponent(_moduleKey: string, type: string, _fieldKey?: string): Component {
         return fieldRegistry.get(type) || fieldRegistry.get('string')!
     }
 
+    /** 目标模块能否作为「单项查看」跳转目标:已按权限注册路由 且 非子模块。返回其路由信息或 undefined(不可跳) */
+    routeForModule(moduleKey: string): IRouteInfo | undefined {
+        if (this.moduleInfo.find(m => m.moduleKey === moduleKey)?.parent) return undefined
+        return this.moduleRoutes.get(moduleKey)
+    }
+
     state = reactive({ isMobile: false })
 
     private _token: string | null = null
@@ -256,6 +264,7 @@ export class VueAdmin extends ShrimpClient {
             props: { moduleKey: info.moduleKey, events: info.events },
             meta: { title: info.label }
         })
+        this.moduleRoutes.set(info.moduleKey, info)
     }
 
     initRouter() {

src/components/ShrimpTable.vue

@@ -132,8 +132,18 @@ const {
 
 const searchVisible = ref(false)
 
+// relation 跳转用 ?filter={_id} 锁定单条；_id 是隐形 pin(不在筛选抽屉里)，
+// 用户一旦搜索/改筛选就清掉它，避免被看不见的 _id 一直 AND 着导致结果莫名为空
+function stripJumpPin() {
+    if ('_id' in filterData.value) {
+        const { _id, ...rest } = filterData.value
+        filterData.value = rest
+    }
+}
+
 function onSearch() {
     searchKeyword.value = keyword.value
+    stripJumpPin()
     currentPage.value = 1
     refresh()
 }
@@ -151,7 +161,8 @@ const hasFilter = computed(() => {
 })
 
 async function handleFilterConfirm(newFilterData: Record<string, any>) {
-    filterData.value = newFilterData
+    const { _id, ...rest } = newFilterData   // 确认筛选 → 丢弃跳转 pin
+    filterData.value = rest
     currentPage.value = 1
     await refresh()
 }
@@ -323,8 +334,10 @@ async function handleSave() {
             formFields.value.forEach(field => {
                 if (field.editable === 'readonly') return
                 if (field.editable === 'addOnly') return
-                const newValue = formData.value[field.key]
+                // 清空字段值为 undefined 时，JSON.stringify 会丢键 → 后端收不到、看似"提交无效"。
-                const oldValue = originalData.value[field.key]
+                // 归一成 null：既保证清空能提交(后端置空)，又让"两边都空"不误判为有改动。
+                const newValue = formData.value[field.key] ?? null
+                const oldValue = originalData.value[field.key] ?? null
                 if (newValue === oldValue) return
                 submitData[field.key] = newValue
             })

src/components/fields/FieldDate.vue

@@ -42,7 +42,7 @@
         style="width: 100%"
     />
     <el-date-picker v-else :model-value="modelValue" @update:model-value="$emit('update:modelValue', $event)" :disabled="disabled"
-        type="datetime" style="width: 100%" />
+        type="datetime" :clearable="!field.required" style="width: 100%" />
 </template>
 
 <script lang="ts" setup>

src/components/fields/FieldRelation.vue

@@ -1,7 +1,13 @@
 <template>
     <template v-if="mode === 'display'">
-        <template v-if="field.multiple">{{ displayNames.join('、') || '-' }}</template>
+        <template v-if="field.multiple">
-        <template v-else>{{ displayName || '-' }}</template>
+            <span v-if="!displayItems.length">-</span>
+            <template v-for="(it, i) in displayItems" :key="i"><a v-if="jumpable" class="rel-link" @click.stop="goto(it.id)">{{ it.name }}</a><span v-else>{{ it.name }}</span><span v-if="i < displayItems.length - 1">、</span></template>
+        </template>
+        <template v-else>
+            <a v-if="jumpable && modelValue != null" class="rel-link" @click.stop="goto(modelValue)">{{ displayName }}</a>
+            <span v-else>{{ displayName || '-' }}</span>
+        </template>
     </template>
     <el-select
         v-else-if="mode === 'filter'"
@@ -12,7 +18,7 @@
     >
         <el-option v-for="opt in options" :key="opt.value" :label="opt.label" :value="opt.value" />
     </el-select>
-    <el-select v-else :model-value="stringValue" @update:model-value="$emit('update:modelValue', $event)" :disabled="disabled" :multiple="field.multiple" filterable remote :remote-method="onSearch" :loading="loading" style="width: 100%">
+    <el-select v-else :model-value="stringValue" @update:model-value="onEdit" :disabled="disabled" :multiple="field.multiple" :clearable="!field.required" filterable remote :remote-method="onSearch" :loading="loading" style="width: 100%">
         <el-option v-for="opt in options" :key="opt.value" :label="opt.label" :value="opt.value" />
     </el-select>
 </template>
@@ -29,10 +35,16 @@ const props = defineProps<{
     disabled?: boolean
 }>()
 
-defineEmits<{
+const emit = defineEmits<{
     'update:modelValue': [value: any]
 }>()
 
+// 编辑态清空：el-select 单选清空发 '' 或 undefined，relation 是 ObjectId、且 undefined 会被
+// JSON.stringify 丢键 → 都归一成 null(取消关联)。多选清空是 []，原样。
+function onEdit(v: any) {
+    emit('update:modelValue', v === '' || v == null ? (props.field.multiple ? [] : null) : v)
+}
+
 const options = ref<{ label: string; value: string }[]>([])
 const loading = ref(false)
 
@@ -44,12 +56,22 @@ const displayName = computed(() => {
     if (id == null) return ''
     return dict.value[String(id)] ?? String(id)
 })
-const displayNames = computed(() =>
+const displayItems = computed(() =>
     (Array.isArray(props.modelValue) ? props.modelValue : [])
-        .map((id: any) => dict.value[String(id)] ?? String(id))
+        .filter((id: any) => id != null)
-        .filter(Boolean)
+        .map((id: any) => ({ id, name: dict.value[String(id)] ?? String(id) }))
 )
 
+// 单项查看跳转：目标模块可达(已注册路由)且非子模块时，名字可点 → 跳目标模块并过滤到该 _id(单行)
+const jumpable = computed(() =>
+    props.mode === 'display' && !!props.field.relation && !!vueAdmin.routeForModule(props.field.relation.moduleKey)
+)
+function goto(id: any) {
+    const r = props.field.relation && vueAdmin.routeForModule(props.field.relation.moduleKey)
+    if (!r || id == null) return
+    vueAdmin.router.push({ name: r.name, query: { filter: JSON.stringify({ _id: String(id) }) } })
+}
+
 /** 统一转为字符串值，解决 ObjectId 与 el-select 的匹配问题 */
 const stringValue = computed(() => {
     // filter 模式强制 multiple，始终返回数组
@@ -105,3 +127,13 @@ onMounted(async () => {
     }
 })
 </script>
+
+<style scoped>
+.rel-link {
+    color: var(--el-color-primary);
+    cursor: pointer;
+}
+.rel-link:hover {
+    text-decoration: underline;
+}
+</style>

src/components/fields/FieldSelect.vue

@@ -21,6 +21,7 @@
         @update:model-value="$emit('update:modelValue', $event)"
         :disabled="disabled"
         :multiple="field.multiple"
+        :clearable="!field.required"
         style="width: 100%"
     >
         <el-option v-for="opt in resolvedOptions" :key="opt.value" :label="vueAdmin.t(opt.label)" :value="opt.value" />

src/components/fields/FieldString.vue

@@ -9,7 +9,7 @@
         </el-tag>
         <el-input v-model="inputValue" @keyup.enter="addTag" @blur="addTag" :placeholder="$t('base.pressEnter')" />
     </div>
-    <el-input v-else :model-value="modelValue" @update:model-value="$emit('update:modelValue', $event)" :disabled="disabled" clearable />
+    <el-input v-else :model-value="modelValue" @update:model-value="$emit('update:modelValue', $event)" :disabled="disabled" :clearable="!field.required" />
 </template>
 
 <script lang="ts" setup>

src/components/fields/FieldTextarea.vue

@@ -19,7 +19,7 @@
         :model-value="modelValue"
         @update:model-value="$emit('update:modelValue', $event)"
         :disabled="disabled"
-        clearable
+        :clearable="!field.required"
     />
 </template>
 

src/components/layout.vue

@@ -24,7 +24,7 @@
 		<div v-if="!vueAdmin.state.isMobile && nextMenu.length > 0" class="aminui-side">
 			<div class="adminui-side-scroll">
 				<el-scrollbar>
-					<el-menu :default-active="$route.fullPath" router>
+					<el-menu :default-active="$route.path" router>
 						<navMenu :navMenus="nextMenu"></navMenu>
 					</el-menu>
 				</el-scrollbar>

src/components/sideM.vue

@@ -17,7 +17,7 @@
 			<el-main>
 				<el-scrollbar>
 					<el-menu
-						:default-active="$route.fullPath"
+						:default-active="$route.path"
 						@select="select"
 						router
 						background-color="#212d3d"

src/module/role.vue

@@ -50,6 +50,7 @@
 <script lang="ts" setup>
 import { ref, onMounted } from 'vue'
 import { useI18n } from 'vue-i18n'
+import { useRoute } from 'vue-router'
 import { vueAdmin } from '../VueAdmin'
 import { IRole, IRoleProto, WithId, ILabel } from '../IShrimpType'
 import { ElMessage } from 'element-plus'
@@ -61,12 +62,24 @@ interface IPowerItem {
 }
 
 const { t } = useI18n()
+const route = useRoute()
 
 const props = defineProps<{
     moduleKey: string
     events?: string[]
 }>()
 
+// relation 跳转落到 role 页时带 ?filter={"_id":...}。role 是自定义 master-detail 页(非 ShrimpTable、
+// 不做服务端过滤)，全量加载后按这个 _id 在列表里选中那条；解析不出就走默认(选第一个)。
+function jumpTargetId(): string {
+    try {
+        const f = route.query.filter ? JSON.parse(String(route.query.filter)) : null
+        return f && typeof f === 'object' ? String(f._id || '') : ''
+    } catch {
+        return ''
+    }
+}
+
 const roleApi = vueAdmin.getModule<IRoleProto>('role')
 
 const roleList = ref<WithId<IRole>[]>([])
@@ -138,7 +151,10 @@ async function handleDelete() {
 onMounted(async () => {
     allPowers.value = await roleApi.allPower()
     await loadRoles()
-    if (roleList.value.length > 0) {
+    const jumpId = jumpTargetId()
+    if (jumpId && roleList.value.some(r => r._id === jumpId)) {
+        onSelect(jumpId)
+    } else if (roleList.value.length > 0) {
         onSelect(roleList.value[0]._id)
     }
 })