feat: 实现后台系列管理功能
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@@ -0,0 +1,126 @@
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import { fail } from '@sveltejs/kit';
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import type { Actions, PageServerLoad } from './$types';
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function makeSlug(value: string): string {
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return value
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.toLowerCase()
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.trim()
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.replace(/[^\w\u4e00-\u9fa5\s-]/g, '')
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.replace(/\s+/g, '-')
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.replace(/-+/g, '-');
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}
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function isUniqueConstraintError(err: unknown): boolean {
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return err instanceof Error && err.message.includes('UNIQUE constraint failed');
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}
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export const load: PageServerLoad = async ({ platform }) => {
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const db = platform?.env?.DB;
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if (!db) return { series: [] };
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try {
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const { results } = await db
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.prepare(
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`SELECT s.id, s.name, s.slug, s.description, COUNT(p.id) AS post_count
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FROM series s
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LEFT JOIN posts p ON p.series_id = s.id
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GROUP BY s.id, s.name, s.slug, s.description
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ORDER BY s.name COLLATE NOCASE ASC`
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)
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.all();
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return {
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series: results as unknown as Array<{
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id: number;
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name: string;
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slug: string;
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description: string | null;
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post_count: number;
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}>
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};
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} catch (err) {
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console.error('Error fetching series:', err);
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return { series: [] };
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}
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};
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export const actions: Actions = {
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create: async ({ request, platform }) => {
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const db = platform?.env?.DB;
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if (!db) return fail(500, { error: '数据库未连接' });
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const formData = await request.formData();
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const name = formData.get('name')?.toString().trim() || '';
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const slug = makeSlug(formData.get('slug')?.toString() || name);
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const description = formData.get('description')?.toString().trim() || null;
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if (!name || !slug) return fail(400, { error: '系列名称和 URL 别名不能为空' });
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try {
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const created = await db
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.prepare(
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'INSERT INTO series (name, slug, description) VALUES (?, ?, ?) RETURNING id, name, slug, description'
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)
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.bind(name, slug, description)
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.first();
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return { success: true, series: created };
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} catch (err: unknown) {
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console.error('Error creating series:', err);
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if (isUniqueConstraintError(err)) {
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return fail(400, { error: '系列名称或 URL 别名已存在' });
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}
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return fail(500, { error: '创建系列失败' });
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}
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},
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update: async ({ request, platform }) => {
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const db = platform?.env?.DB;
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if (!db) return fail(500, { error: '数据库未连接' });
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const formData = await request.formData();
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const id = Number(formData.get('id'));
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const name = formData.get('name')?.toString().trim() || '';
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const slug = makeSlug(formData.get('slug')?.toString() || '');
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const description = formData.get('description')?.toString().trim() || null;
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if (!Number.isInteger(id) || id <= 0 || !name || !slug) {
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return fail(400, { error: '系列信息不完整' });
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}
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try {
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await db
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.prepare('UPDATE series SET name = ?, slug = ?, description = ? WHERE id = ?')
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.bind(name, slug, description, id)
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.run();
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return { success: true };
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} catch (err: unknown) {
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console.error('Error updating series:', err);
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if (isUniqueConstraintError(err)) {
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return fail(400, { error: '系列名称或 URL 别名已存在' });
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}
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return fail(500, { error: '更新系列失败' });
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}
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},
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delete: async ({ request, platform }) => {
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const db = platform?.env?.DB;
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if (!db) return fail(500, { error: '数据库未连接' });
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const formData = await request.formData();
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const id = Number(formData.get('id'));
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if (!Number.isInteger(id) || id <= 0) return fail(400, { error: '系列 ID 无效' });
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try {
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await db.batch([
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db
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.prepare('UPDATE posts SET series_id = NULL, series_weight = NULL WHERE series_id = ?')
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.bind(id),
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db.prepare('DELETE FROM series WHERE id = ?').bind(id)
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]);
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return { success: true };
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} catch (err) {
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console.error('Error deleting series:', err);
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return fail(500, { error: '删除系列失败' });
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}
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}
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};
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@@ -0,0 +1,241 @@
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<script lang="ts">
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import { page } from '$app/stores';
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import { resolve } from '$app/paths';
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import type { ActionData, PageData } from './$types';
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let { data, form }: { data: PageData; form: ActionData } = $props();
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let name = $state('');
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let slug = $state('');
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function handleNameInput() {
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if (!slug) {
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slug = name
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.toLowerCase()
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.replace(/[^\w\u4e00-\u9fa5\s-]/g, '')
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.replace(/\s+/g, '-');
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}
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}
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</script>
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<div class="admin-page-header">
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<h2>{$page.data.aliases?.series || '系列'}管理</h2>
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</div>
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{#if form?.error}
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<div class="error-alert">{form.error}</div>
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{/if}
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<div class="series-grid-layout">
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<section class="create-series-card">
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<h3>新{$page.data.aliases?.series || '系列'}</h3>
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<form method="POST" action="?/create">
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<label for="name">名称 *</label>
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<input
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id="name"
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name="name"
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type="text"
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bind:value={name}
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oninput={handleNameInput}
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required
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/>
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<label for="slug">URL 别名 *</label>
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<input id="slug" name="slug" type="text" bind:value={slug} required />
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<label for="description">描述</label>
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<textarea
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id="description"
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name="description"
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rows="5"
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placeholder="介绍这个系列的主题和阅读顺序"></textarea>
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<button type="submit" class="btn btn-primary">创建</button>
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</form>
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</section>
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<section class="series-list">
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{#if data.series.length === 0}
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<div class="empty-state">暂无系列。</div>
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{:else}
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{#each data.series as item (item.id)}
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<article class="series-editor">
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<form method="POST" action="?/update">
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<input type="hidden" name="id" value={item.id} />
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<div class="editor-heading">
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<strong>{item.name}</strong>
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<span class="badge">{item.post_count} 篇文章</span>
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</div>
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<div class="field-row">
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<div>
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<label for="name-{item.id}">名称</label>
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<input id="name-{item.id}" name="name" type="text" value={item.name} required />
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</div>
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<div>
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<label for="slug-{item.id}">URL 别名</label>
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<input id="slug-{item.id}" name="slug" type="text" value={item.slug} required />
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</div>
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</div>
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<label for="description-{item.id}">描述</label>
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<textarea
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id="description-{item.id}"
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name="description"
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rows="3"
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value={item.description || ''}></textarea>
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<button type="submit" class="action-btn">保存修改</button>
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<a
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href={resolve('/series/[slug]', { slug: item.slug })}
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target="_blank"
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class="action-btn">查看</a
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>
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</form>
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<form
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method="POST"
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action="?/delete"
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class="delete-form"
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onsubmit={(event) => {
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if (!confirm(`确定删除系列“${item.name}”吗？相关文章会保留，但不再属于任何系列。`))
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event.preventDefault();
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}}
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>
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<input type="hidden" name="id" value={item.id} />
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<button type="submit" class="action-btn delete">删除</button>
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</form>
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</article>
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{/each}
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{/if}
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</section>
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</div>
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<style>
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.admin-page-header {
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margin-bottom: 25px;
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border-bottom: 2px solid var(--text-color);
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padding-bottom: 12px;
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}
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.admin-page-header h2 {
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margin: 0;
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font-size: 2rem;
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}
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.error-alert {
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padding: 12px 16px;
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border-left: 4px solid #d9534f;
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color: #d9534f;
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margin-bottom: 24px;
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font-weight: 600;
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}
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.series-grid-layout {
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display: grid;
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grid-template-columns: 300px 1fr;
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gap: 30px;
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align-items: start;
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}
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.create-series-card h3 {
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margin: 0 0 20px;
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font-size: 0.9rem;
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letter-spacing: 1px;
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text-transform: uppercase;
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}
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label {
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display: block;
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margin: 18px 0 8px;
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font-size: 0.85rem;
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font-weight: 700;
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letter-spacing: 0.5px;
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}
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input,
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textarea {
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width: 100%;
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box-sizing: border-box;
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padding: 10px 0;
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border: 0;
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border-bottom: 2px solid rgba(0, 0, 0, 0.12);
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background: transparent;
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color: var(--text-color);
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font: inherit;
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}
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textarea {
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padding: 10px;
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border: 1px solid rgba(0, 0, 0, 0.15);
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resize: vertical;
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}
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input:focus,
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textarea:focus {
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outline: none;
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border-color: var(--accent-color, #419b38);
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}
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.btn {
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width: 100%;
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margin-top: 20px;
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padding: 10px 20px;
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border: 1px solid var(--text-color);
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background: var(--text-color);
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color: var(--bg-color);
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font: inherit;
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font-weight: 600;
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cursor: pointer;
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}
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.btn:hover {
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background: var(--accent-color, #419b38);
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border-color: var(--accent-color, #419b38);
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color: white;
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}
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.series-list {
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display: grid;
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gap: 18px;
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}
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.series-editor {
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position: relative;
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border: 2px solid var(--text-color);
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padding: 18px;
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}
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.editor-heading {
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display: flex;
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justify-content: space-between;
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gap: 16px;
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align-items: center;
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}
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.field-row {
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: 18px;
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}
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.action-btn {
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display: inline-block;
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margin: 16px 14px 0 0;
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padding: 0;
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border: 0;
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background: transparent;
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color: var(--text-color);
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font: inherit;
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cursor: pointer;
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text-decoration: none;
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}
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.action-btn:hover {
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color: var(--accent-color, #419b38);
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text-decoration: underline;
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text-underline-offset: 4px;
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}
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.delete-form {
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position: absolute;
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right: 4px;
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bottom: 18px;
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}
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.action-btn.delete:hover {
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color: #d9534f;
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}
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.empty-state {
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border: 2px solid var(--text-color);
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padding: 50px 20px;
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text-align: center;
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color: var(--text-muted);
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}
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@media (max-width: 800px) {
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.series-grid-layout,
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.field-row {
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grid-template-columns: 1fr;
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}
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.delete-form {
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position: static;
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}
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}
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</style>
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