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<template>
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<!-- 添加/编辑Banner对话框 -->
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<el-dialog
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:model-value="visible"
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:title="dialogTitle"
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width="600px"
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:close-on-click-modal="false"
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@update:model-value="handleDialogClose"
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>
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<el-form
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:model="currentBanner"
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label-width="100px"
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:rules="formRules"
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ref="bannerFormRef"
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>
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<el-form-item label="标题" prop="title">
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<el-input
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v-model="currentBanner.title"
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placeholder="请输入Banner标题"
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maxlength="255"
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show-word-limit
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/>
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</el-form-item>
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<el-form-item label="简介" prop="desc">
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<el-input
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v-model="currentBanner.desc"
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type="textarea"
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:rows="4"
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placeholder="请输入Banner简介"
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/>
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</el-form-item>
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<el-form-item label="跳转地址" prop="url">
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<el-input
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v-model="currentBanner.url"
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placeholder="例如：https://www.example.com 或 /page/detail"
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/>
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<div style="margin-top: 8px; font-size: 12px; color: var(--el-text-color-secondary);">
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支持外部链接（http://）和内部路由（/）
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</div>
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</el-form-item>
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<el-form-item label="Banner图片" prop="image">
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<el-upload
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class="image-uploader"
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:action="uploadUrl"
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:headers="uploadHeaders"
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:show-file-list="false"
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:on-success="handleImageSuccess"
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:on-error="handleImageError"
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:before-upload="beforeImageUpload"
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accept="*"
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>
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<img
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v-if="currentBanner.image"
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:src="getImageUrl(currentBanner.image)"
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class="image-preview"
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/>
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<div v-else class="upload-placeholder">
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<el-icon class="image-uploader-icon"><Plus /></el-icon>
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<div class="el-upload__text">点击上传图片</div>
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</div>
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</el-upload>
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<div style="margin-top: 8px; font-size: 12px; color: var(--el-text-color-secondary);">
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建议尺寸：1920x600，支持 jpg、png、gif 格式，大小不超过 5MB
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</div>
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<el-button
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v-if="currentBanner.image"
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size="small"
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type="danger"
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text
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@click="handleRemoveImage"
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style="margin-top: 8px;"
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>
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删除图片
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</el-button>
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</el-form-item>
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<el-form-item label="排序" prop="sort">
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<el-input-number
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v-model="currentBanner.sort"
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:min="0"
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placeholder="数字越小越靠前"
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style="width: 100%"
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/>
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<div style="margin-top: 8px; font-size: 12px; color: var(--el-text-color-secondary);">
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数字越小，排序越靠前
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</div>
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</el-form-item>
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</el-form>
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<template #footer>
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<span class="dialog-footer">
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<el-button @click="handleCancel">取消</el-button>
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<el-button type="primary" @click="handleSave">确定</el-button>
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</span>
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</template>
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</el-dialog>
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</template>
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<script setup lang="ts">
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import { ref, computed, watch } from "vue";
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import { ElMessage, ElForm } from "element-plus";
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import { Plus } from "@element-plus/icons-vue";
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// 定义Banner数据类型
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interface Banner {
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id: number;
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title: string;
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desc: string;
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url: string;
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image: string;
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sort: number;
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create_time?: number;
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update_time?: number;
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delete_time?: number;
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}
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// Props
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interface Props {
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visible: boolean;
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banner: Partial<Banner> | null;
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}
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const props = withDefaults(defineProps<Props>(), {
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visible: false,
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banner: null,
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});
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// Emits
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const emit = defineEmits<{
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(e: "update:visible", value: boolean): void;
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(e: "save", banner: Partial<Banner>): void;
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(e: "cancel"): void;
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}>();
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// 表单引用
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const bannerFormRef = ref<InstanceType<typeof ElForm>>();
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// 当前操作的Banner
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const currentBanner = ref<Partial<Banner>>({
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id: 0,
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title: "",
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desc: "",
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url: "",
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image: "",
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sort: 0,
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});
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// 上传配置
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// @ts-ignore
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const API_BASE_URL = import.meta.env.VITE_API_BASE_URL;
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const uploadUrl = ref(API_BASE_URL + "/admin/uploadfiles");
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const uploadHeaders = ref({
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Authorization: "Bearer " + (localStorage.getItem("token") || ""),
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});
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// 对话框标题
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const dialogTitle = computed(() => {
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return props.banner?.id && props.banner.id > 0 ? "编辑Banner" : "添加Banner";
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});
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// 表单验证规则
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const formRules = ref({
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title: [{ required: true, message: "请输入Banner标题", trigger: "blur" }],
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sort: [{ required: true, message: "请输入排序号", trigger: "blur" }],
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});
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// 监听props变化，更新当前Banner
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watch(
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() => props.banner,
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(newBanner) => {
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if (newBanner) {
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currentBanner.value = {
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...newBanner,
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};
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} else {
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// 重置表单
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currentBanner.value = {
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id: 0,
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title: "",
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desc: "",
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url: "",
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image: "",
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sort: 0,
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};
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}
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},
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{ immediate: true }
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);
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// 监听props.visible变化
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watch(
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() => props.visible,
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(newVisible) => {
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if (newVisible && (!props.banner || !props.banner.id)) {
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// 新增时重置表单
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currentBanner.value = {
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id: 0,
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title: "",
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desc: "",
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url: "",
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image: "",
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sort: 0,
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};
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}
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}
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);
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// 取消操作
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const handleCancel = () => {
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emit("update:visible", false);
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emit("cancel");
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};
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// 处理对话框关闭
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const handleDialogClose = (value: boolean) => {
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if (!value) {
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emit("update:visible", false);
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emit("cancel");
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}
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};
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// 图片上传前校验
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const beforeImageUpload = (file: any) => {
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return true;
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};
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// 图片上传成功
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const handleImageSuccess = (response: any) => {
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if (response.code === 200) {
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// 直接保存相对路径，不拼接API_BASE_URL
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currentBanner.value.image = response.data.url || response.data.path;
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ElMessage.success("图片上传成功");
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} else {
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ElMessage.error(response.msg || "图片上传失败");
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}
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};
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// 图片上传失败
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const handleImageError = () => {
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ElMessage.error("图片上传失败，请重试");
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};
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// 删除图片
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const handleRemoveImage = () => {
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currentBanner.value.image = "";
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ElMessage.success("图片已删除");
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};
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// 获取图片完整URL（用于预览）
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const getImageUrl = (imagePath: string) => {
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if (!imagePath) return "";
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// 如果是绝对路径，直接返回
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if (imagePath.startsWith("http")) return imagePath;
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// 如果是相对路径，拼接API基础地址
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return API_BASE_URL + imagePath;
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};
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// 保存Banner
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const handleSave = async () => {
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// 表单验证
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if (!bannerFormRef.value) return;
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const valid = await bannerFormRef.value.validate();
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if (!valid) return;
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// 准备提交数据
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const payload = { ...currentBanner.value };
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// 触发保存事件
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emit("save", payload);
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};
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</script>
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<style lang="less" scoped>
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/* 对话框样式精简 */
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:deep(.el-dialog__body) {
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padding: 20px;
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max-height: 60vh;
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overflow-y: auto;
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}
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:deep(.el-form-item) {
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margin-bottom: 16px;
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}
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/* 图片上传样式 */
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.image-uploader {
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:deep(.el-upload) {
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border: 1px dashed var(--el-border-color);
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border-radius: 6px;
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cursor: pointer;
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position: relative;
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overflow: hidden;
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transition: var(--el-transition-duration-fast);
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&:hover {
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border-color: var(--el-color-primary);
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}
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}
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}
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.image-preview {
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width: 100%;
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max-width: 500px;
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height: auto;
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max-height: 300px;
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display: block;
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object-fit: contain;
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border-radius: 4px;
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}
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.upload-placeholder {
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width: 100%;
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min-height: 200px;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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color: var(--el-text-color-secondary);
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.image-uploader-icon {
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font-size: 48px;
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margin-bottom: 12px;
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}
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.el-upload__text {
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font-size: 14px;
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}
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}
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</style>
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