BPM：优化 task 加减签的实现

src/views/bpm/processInstance/detail/dialog/TaskSignCreateForm.vue

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+<template>
+  <Dialog v-model="dialogVisible" title="加签" width="500">
+    <el-form
+      ref="formRef"
+      v-loading="formLoading"
+      :model="formData"
+      :rules="formRules"
+      label-width="110px"
+    >
+      <el-form-item label="加签处理人" prop="userIds">
+        <el-select v-model="formData.userIds" multiple clearable style="width: 100%">
+          <el-option
+            v-for="item in userList"
+            :key="item.id"
+            :label="item.nickname"
+            :value="item.id"
+          />
+        </el-select>
+      </el-form-item>
+      <el-form-item label="加签理由" prop="reason">
+        <el-input v-model="formData.reason" clearable placeholder="请输入加签理由" />
+      </el-form-item>
+    </el-form>
+    <template #footer>
+      <el-button :disabled="formLoading" type="primary" @click="submitForm('before')">
+        向前加签
+      </el-button>
+      <el-button :disabled="formLoading" type="primary" @click="submitForm('after')">
+        向后加签
+      </el-button>
+      <el-button @click="dialogVisible = false">取 消</el-button>
+    </template>
+  </Dialog>
+</template>
+<script lang="ts" setup>
+import * as TaskApi from '@/api/bpm/task'
+import * as UserApi from '@/api/system/user'
+
+defineOptions({ name: 'TaskSignCreateForm' })
+
+const message = useMessage() // 消息弹窗
+const dialogVisible = ref(false) // 弹窗的是否展示
+const formLoading = ref(false) // 表单的加载中
+const formData = ref({
+  id: '',
+  userIds: [],
+  type: '',
+  reason: ''
+})
+const formRules = ref({
+  userIds: [{ required: true, message: '加签处理人不能为空', trigger: 'change' }],
+  reason: [{ required: true, message: '加签理由不能为空', trigger: 'change' }]
+})
+
+const formRef = ref() // 表单 Ref
+const userList = ref<any[]>([]) // 用户列表
+
+/** 打开弹窗 */
+const open = async (id: string) => {
+  dialogVisible.value = true
+  resetForm()
+  formData.value.id = id
+  // 获得用户列表
+  userList.value = await UserApi.getSimpleUserList()
+}
+defineExpose({ open }) // 提供 openModal 方法，用于打开弹窗
+
+/** 提交表单 */
+const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
+const submitForm = async (type: string) => {
+  // 校验表单
+  if (!formRef) return
+  const valid = await formRef.value.validate()
+  if (!valid) return
+  // 提交请求
+  formLoading.value = true
+  formData.value.type = type
+  try {
+    await TaskApi.signCreateTask(formData.value)
+    message.success('加签成功')
+    dialogVisible.value = false
+    // 发送操作成功的事件
+    emit('success')
+  } finally {
+    formLoading.value = false
+  }
+}
+
+/** 重置表单 */
+const resetForm = () => {
+  formData.value = {
+    id: '',
+    userIds: [],
+    type: '',
+    reason: ''
+  }
+  formRef.value?.resetFields()
+}
+</script>

src/views/bpm/processInstance/detail/dialog/TaskSignDeleteForm.vue

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+<template>
+  <Dialog v-model="dialogVisible" title="减签" width="500">
+    <el-form
+      ref="formRef"
+      v-loading="formLoading"
+      :model="formData"
+      :rules="formRules"
+      label-width="110px"
+    >
+      <el-form-item label="减签任务" prop="id">
+        <el-radio-group v-model="formData.id">
+          <el-radio-button v-for="item in childrenTaskList" :key="item.id" :label="item.id">
+            {{ item.name }}
+            ({{ item.assigneeUser?.deptName || item.ownerUser?.deptName }} -
+            {{ item.assigneeUser?.nickname || item.ownerUser?.nickname }})
+          </el-radio-button>
+        </el-radio-group>
+      </el-form-item>
+      <el-form-item label="减签理由" prop="reason">
+        <el-input v-model="formData.reason" clearable placeholder="请输入减签理由" />
+      </el-form-item>
+    </el-form>
+    <template #footer>
+      <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
+      <el-button @click="dialogVisible = false">取 消</el-button>
+    </template>
+  </Dialog>
+</template>
+<script lang="ts" setup>
+import * as TaskApi from '@/api/bpm/task'
+import { isEmpty } from '@/utils/is'
+
+defineOptions({ name: 'TaskSignDeleteForm' })
+
+const message = useMessage() // 消息弹窗
+const dialogVisible = ref(false) // 弹窗的是否展示
+const formLoading = ref(false) // 表单的加载中
+const formData = ref({
+  id: '',
+  reason: ''
+})
+const formRules = ref({
+  id: [{ required: true, message: '必须选择减签任务', trigger: 'change' }],
+  reason: [{ required: true, message: '减签理由不能为空', trigger: 'blur' }]
+})
+
+const formRef = ref() // 表单 Ref
+const childrenTaskList = ref([])
+/** 打开弹窗 */
+const open = async (id: string) => {
+  childrenTaskList.value = await TaskApi.getChildrenTaskList(id)
+  if (isEmpty(childrenTaskList.value)) {
+    message.warning('当前没有可减签的任务')
+    return false
+  }
+  dialogVisible.value = true
+  resetForm()
+}
+defineExpose({ open }) // 提供 openModal 方法，用于打开弹窗
+
+/** 提交表单 */
+const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
+const submitForm = async () => {
+  // 校验表单
+  if (!formRef) return
+  const valid = await formRef.value.validate()
+  if (!valid) return
+  // 提交请求
+  formLoading.value = true
+  try {
+    await TaskApi.signDeleteTask(formData.value)
+    message.success('减签成功')
+    dialogVisible.value = false
+    // 发送操作成功的事件
+    emit('success')
+  } finally {
+    formLoading.value = false
+  }
+}
+
+/** 重置表单 */
+const resetForm = () => {
+  formData.value = {
+    id: '',
+    reason: ''
+  }
+  formRef.value?.resetFields()
+}
+</script>

src/views/bpm/processInstance/detail/dialog/TaskSignList.vue

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+<template>
+  <el-drawer v-model="drawerVisible" title="子任务" size="880px">
+    <!-- 当前任务 -->
+    <template #header>
+      <h4>【{{ parentTask.name }} 】审批人：{{ parentTask?.assigneeUser?.nickname }}</h4>
+      <el-button
+        style="margin-left: 5px"
+        v-if="isSignDeleteButtonVisible(parentTask)"
+        type="danger"
+        plain
+        @click="handleSignDelete(parentTask)"
+      >
+        <Icon icon="ep:remove" /> 减签
+      </el-button>
+    </template>
+    <!-- 子任务列表 -->
+    <el-table :data="parentTask.children" style="width: 100%" row-key="id" border>
+      <el-table-column prop="assigneeUser.nickname" label="审批人" min-width="100">
+        <template #default="scope">
+          {{ scope.row.assigneeUser?.nickname || scope.row.ownerUser?.nickname }}
+        </template>
+      </el-table-column>
+      <el-table-column prop="assigneeUser.deptName" label="所在部门" min-width="100">
+        <template #default="scope">
+          {{ scope.row.assigneeUser?.deptName || scope.row.ownerUser?.deptName }}
+        </template>
+      </el-table-column>
+      <el-table-column label="审批状态" prop="status" width="120">
+        <template #default="scope">
+          <dict-tag :type="DICT_TYPE.BPM_PROCESS_INSTANCE_RESULT" :value="scope.row.status" />
+        </template>
+      </el-table-column>
+      <el-table-column
+        label="提交时间"
+        align="center"
+        prop="createTime"
+        width="180"
+        :formatter="dateFormatter"
+      />
+      <el-table-column
+        label="结束时间"
+        align="center"
+        prop="endTime"
+        width="180"
+        :formatter="dateFormatter"
+      />
+      <el-table-column label="操作" prop="operation" width="90">
+        <template #default="scope">
+          <el-button
+            v-if="isSignDeleteButtonVisible(scope.row)"
+            type="danger"
+            plain
+            size="small"
+            @click="handleSignDelete(scope.row)"
+          >
+            <Icon icon="ep:remove" /> 减签
+          </el-button>
+        </template>
+      </el-table-column>
+    </el-table>
+
+    <!-- 减签 -->
+    <TaskSignDeleteForm ref="taskSignDeleteFormRef" @success="handleSignDeleteSuccess" />
+  </el-drawer>
+</template>
+<script lang="ts" setup>
+import { isEmpty } from '@/utils/is'
+import { DICT_TYPE } from '@/utils/dict'
+import { dateFormatter } from '@/utils/formatTime'
+import TaskSignDeleteForm from './TaskSignDeleteForm.vue'
+
+defineOptions({ name: 'TaskSignList' })
+
+const message = useMessage() // 消息弹窗
+const drawerVisible = ref(false) // 抽屉的是否展示
+const parentTask = ref({} as any)
+
+/** 打开弹窗 */
+const open = async (task: any) => {
+  if (isEmpty(task.children)) {
+    message.warning('该任务没有子任务')
+    return
+  }
+  parentTask.value = task
+  // 展开抽屉
+  drawerVisible.value = true
+}
+defineExpose({ open }) // 提供 openModal 方法，用于打开弹窗
+
+/** 发起减签 */
+const taskSignDeleteFormRef = ref()
+const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
+const handleSignDelete = (item: any) => {
+  taskSignDeleteFormRef.value.open(item.id)
+}
+const handleSignDeleteSuccess = () => {
+  emit('success')
+  // 关闭抽屉
+  drawerVisible.value = false
+}
+
+/** 是否显示减签按钮 */
+const isSignDeleteButtonVisible = (task: any) => {
+  return task && task.children && !isEmpty(task.children)
+}
+</script>