vxetable右键菜单选项如何添加权限及根据行的数据渲染

在这里插入图片描述

业务场景：

页面做了按钮权限，表格上也做了右键菜单的功能，也需要给右键菜单做权限功能控制

解决思路：

通过查看文档，右键配置 menu-config选择有个属性 visibleMethod (文档说明：该函数的返回值用来决定是否允许显示右键菜单（对于需要对菜单进行权限控制时可能会用到）)，它可以获取到这些数据
```
({ type, options, columns, row?, rowIndex?, column?, columnIndex? }) => boolean
// options 就是我们的配置数据  
// row 是当前点击的行 
```
配置右键的选项的时候增加一个属性 auth: ["权限编码"]
需要用到 hooks 中的 usePermission 方法，来验证权限
在visibleMethod 中去遍历 options 中的auth属性，去验证是否有权限

代码参考

vxeTable 配置

 ...
menuConfig: {
      // 右键配置
      body: {
        options: [Options()],
      },
      visibleMethod: visibleMethod,
    },
 ...
 
//options 配置 
 const orderClassTableMenuConfigOptions = () => {
  return [
    {
      code: 'refresh',
      name: '刷新',
      prefixIcon: 'vxe-icon-refresh',
      visible: true,
      disabled: false,
    },
    {
      code: 'add',
      name: '新增',
      prefixIcon: 'vxe-icon-feedback',
      visible: true,
      disabled: false,
      auth: ["yanjun202.com_add"],
    },
    {
      code: 'copy',
      name: '复制',
      prefixIcon: 'vxe-icon-paste',
      visible: true,
      disabled: true,
      auth: ["yanjun202.com_copy"],
    },] ;
//visibleMethod  
function visibleMethod(Opt) {
  const { options, row, rowIndex, columns } = Opt; 

  // 权限处理 
  const { isPermission } = usePermission();

  options[0].forEach((item) => {
    if (item.auth) {
      //可以设置 隐藏或者禁用， 根据业务场景控制
      item.visible = isPermission(item.auth);
    }
  });
   // 或者可以根据行的数据，来判断是否禁用按钮
  if (row.orderClass == 'A' && row.orderStatus !== '8') {
    // 复制的可用 或者禁用
    const index = options[0].findIndex((item) => item.code === 'copy');
    options[0][index].disabled = false;
  }
     return true; 
}

usePermission 写法的参考：来源：前端君哥

  

/**
 * maxList是否包含minList
 *
 * @param maxList 大数组
 * @param minList 小数组
 */
function containsAll(maxList: string[], minList: string[]) {
  return intersection(maxList, minList).length == minList.length;
}

/**
 * 判断是否有权限
 *
 * @param permissionsOwns  用户拥有的权限（后台/anyone/visible/resource接口查询出的权限集合）
 * @param toBeVerified     待验证的权限（按钮上面写死的资源编码，如<a-button v-hasPermission="['system:menu:delete']">）
 */
function isPermitted(permissionsOwns: WildcardPermission[], toBeVerified: WildcardPermission) {
  if (permissionsOwns == null || permissionsOwns.length === 0) {
    return false;
  }
  // 遍历用户拥有的权限，按个判断是否”包含“待验证的权限
  for (const owned of permissionsOwns) {
    if (owned.implies(toBeVerified)) {
      return true;
    }
  }
  return false;
}

const WILDCARD_TOKEN = '*'; // 通配符
const PART_DIVIDER_TOKEN = ':'; // 模块分隔符
const SUBPART_DIVIDER_TOKEN = ','; // 功能分隔符

/**
 * 通配符权限解析对象
 */
class WildcardPermission {
  // 解析后的只包含 : 的权限集合
  parts: string[][];

  /**
   * 将 wildcardString 解析存储到 parts
   *
   * @param wildcardString 原始通配符字符串
   * @param caseSensitive 是否区分大小写 true：区分；false：忽略大小写
   */
  constructor(wildcardString: string, caseSensitive: boolean) {
    this.parts = [];
    this._init_(wildcardString, caseSensitive);
  }

  // 解析通配符
  _init_(wildcardString: string, caseSensitive: boolean) {
    if (wildcardString == null || wildcardString.trim().length === 0) {
      throw new Error('权限编码通配符字符串不能为null或空。确保权限字符串的格式正确。');
    }
    wildcardString = wildcardString.trim();
    const parts: string[] = wildcardString.split(PART_DIVIDER_TOKEN);
    this.parts = [];
    for (const part of parts) {
      let subParts: string[] = part.split(SUBPART_DIVIDER_TOKEN);
      if (!caseSensitive) {
        const lowerSubParts: string[] = [];
        for (const subPart of subParts) {
          lowerSubParts.push(subPart.toLocaleLowerCase());
        }
        subParts = lowerSubParts;
      }
      if (subParts.length <= 0) {
        throw new Error(
          '权限编码通配符字符串不能包含只有分隔符的部分，确保权限编码字符串的格式正确。',
        );
      }
      this.parts.push(subParts);
    }

    if (this.parts.length <= 0) {
      throw new Error('权限编码通配符字符串不能只包含分隔符，确保权限编码字符串的格式正确。');
    }
  }

  // 真正的判断逻辑
  implies(toBeVerified: WildcardPermission) {
    const toBeVerifiedParts = toBeVerified.parts;
    let i = 0;
    for (const toBeVerifiedPart of toBeVerifiedParts) {
      // 如果此权限的部分数少于其他权限，则此权限中包含的部分数之后的所有内容都将自动隐含，因此返回true
      if (this.parts.length - 1 < i) {
        return false;
      } else {
        const part = this.parts[i];
        if (!part.includes(WILDCARD_TOKEN) && !containsAll(part, toBeVerifiedPart)) {
          return false;
        }
        i++;
      }
    }

    // 如果此权限的部分多于其他部分，则仅当所有其他部分都是通配符时才暗示它
    for (; i < this.parts.length; i++) {
      const part = this.parts[i];
      if (!part.includes(WILDCARD_TOKEN)) {
        return false;
      }
    }
    return true;
  }
}

const permMap = {};

// User permissions related operations
export function usePermission() {
  const userStore = useUserStore();
  const appStore = useAppStore();
  const permissionStore = usePermissionStore();
  const { closeAll } = useTabs(router);

  /**
   * Change permission mode
   */
  async function togglePermissionMode() {
    appStore.setProjectConfig({
      permissionMode:
        projectSetting.permissionMode === PermissionModeEnum.BACK
          ? PermissionModeEnum.ROUTE_MAPPING
          : PermissionModeEnum.BACK,
    });
    location.reload();
  }

  /**
   * Reset and regain authority resource information
   * @param id
   */
  async function resume() {
    const tabStore = useMultipleTabStore();
    tabStore.clearCacheTabs();
    resetRouter();
    const routes = await permissionStore.buildRoutesAction();
    routes.forEach((route) => {
      router.addRoute(route as unknown as RouteRecordRaw);
    });
    permissionStore.setLastBuildMenuTime();
    closeAll();
  }
  /**
   * 必须包含列出的所有权限，元素才显示
   */
  function hasPermission(value?: RoleEnum | RoleEnum[] | string | string[], def = true): boolean {
    return isPermission(value, def, PermModeEnum.Has);
  }
  /**
   * 当不包含列出的所有权限时，渲染该元素
   */
  function withoutPermission(
    value?: RoleEnum | RoleEnum[] | string | string[],
    def = true,
  ): boolean {
    return isPermission(value, def, PermModeEnum.Without);
  }
  /**
   * 当不包含列出的任意权限时，渲染该元素
   */
  function withoutAnyPermission(
    value?: RoleEnum | RoleEnum[] | string | string[],
    def = true,
  ): boolean {
    return isPermission(value, def, PermModeEnum.WithoutAny);
  }
  /**
   * 只要包含列出的任意一个权限，元素就会显示
   */
  function hasAnyPermission(
    value?: RoleEnum | RoleEnum[] | string | string[],
    def = true,
  ): boolean {
    return isPermission(value, def, PermModeEnum.HasAny);
  }
  /**
   * 判断权限
   *
   * @param value 需要判断当前用户是否拥有的资源编码
   * @param def  value 为空时，默认是否拥有
   * @param mode 模式  可选值： 拥有所有 拥有任意 没有
   */
  function isPermission(
    value?: RoleEnum | RoleEnum[] | string | string[],
    def = true,
    mode = PermModeEnum.Has,
  ): boolean {
    // Visible by default
    if (!value) {
      return def;
    }

    const permMode = projectSetting.permissionMode;

    if ([PermissionModeEnum.ROUTE_MAPPING, PermissionModeEnum.ROLE].includes(permMode)) {
      if (!isArray(value)) {
        return userStore.getRoleList?.includes(value as RoleEnum);
      }
      return (intersection(value, userStore.getRoleList) as RoleEnum[]).length > 0;
    }

    if (PermissionModeEnum.BACK === permMode) {
      const visibleResource = permissionStore.getVisibleResource;
      const enabled = visibleResource?.enabled;
      if (!enabled) {
        return true;
      }

      let flag = true;
      if (mode === PermModeEnum.HasAny || mode === PermModeEnum.WithoutAny) {
        flag = false;
      }
      const resourceList = visibleResource.resourceList;
      const caseSensitive = visibleResource.caseSensitive;
      // 待校验权限 一定要是数组
      let permissions = value;
      if (!isArray(value)) {
        permissions = [value];
      }

      if (permissions != null && permissions.length > 0) {
        // 转换拥有的权限
        const permissionsOwns: WildcardPermission[] = [];
        // bug：从开发者系统退出后，登录基础平台都会提示无权限
        // if (map.permissionsOwns && map.permissionsOwns.length > 0) {
        //   permissionsOwns = map.permissionsOwns;
        // } else {
        for (const resource of resourceList) {
          // let wp: WildcardPermission;
          // if (permMap[resource]) {
          //   wp = permMap[resource];
          // } else {
          //   wp = new WildcardPermission(resource, caseSensitive);
          // }
          permissionsOwns.push(new WildcardPermission(resource, caseSensitive));
        }
        // map.permissionsOwns = permissionsOwns;
        // }

        for (const strPerm of permissions) {
          let toBeVerified;
          if (permMap[strPerm]) {
            toBeVerified = permMap[strPerm];
          } else {
            toBeVerified = new WildcardPermission(strPerm, caseSensitive);
          }
          // 不同的模式，校验规则不一样
          if (mode === PermModeEnum.Has) {
            // 拥有所有权限
            if (!isPermitted(permissionsOwns, toBeVerified)) {
              flag = false;
            }
          } else if (mode === PermModeEnum.Without) {
            // 没有所有权限`在这里插入图片描述
`
            if (isPermitted(permissionsOwns, toBeVerified)) {
              flag = false;
            }
          } else if (mode === PermModeEnum.HasAny) {
            // 拥有任意一个权限
            if (isPermitted(permissionsOwns, toBeVerified)) {
              flag = true;
            }
          } else if (mode === PermModeEnum.WithoutAny) {
            // 没有任意一个权限
            if (!isPermitted(permissionsOwns, toBeVerified)) {
              flag = true;
            }
          }
        }
      }

      return flag;
    }
    return true;
  }

  /**
   * Change roles
   * @param roles
   */
  async function changeRole(roles: RoleEnum | RoleEnum[]): Promise<void> {
    if (projectSetting.permissionMode !== PermissionModeEnum.ROUTE_MAPPING) {
      throw new Error(
        'Please switch PermissionModeEnum to ROUTE_MAPPING mode in the configuration to operate!',
      );
    }

    if (!isArray(roles)) {
      roles = [roles];
    }
    userStore.setRoleList(roles);
    await resume();
  }

  /**
   * refresh menu data
   */
  async function refreshMenu() {
    resume();
  }

  return {
    changeRole,
    isPermission,
    hasPermission,
    withoutPermission,
    withoutAnyPermission,
    hasAnyPermission,
    togglePermissionMode,
    refreshMenu,
  };
}