feat: 实现后台系列管理功能

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seahi committed 2026-08-06 12:14:13 +08:00
1 parent 592d4e1f6d
commit 2780add6a8
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import { fail } from '@sveltejs/kit';
import type { Actions, PageServerLoad } from './$types';
function makeSlug(value: string): string {
return value
.toLowerCase()
.trim()
.replace(/[^\w\u4e00-\u9fa5\s-]/g, '')
.replace(/\s+/g, '-')
.replace(/-+/g, '-');
}
function isUniqueConstraintError(err: unknown): boolean {
return err instanceof Error && err.message.includes('UNIQUE constraint failed');
}
export const load: PageServerLoad = async ({ platform }) => {
const db = platform?.env?.DB;
if (!db) return { series: [] };
try {
const { results } = await db
.prepare(
`SELECT s.id, s.name, s.slug, s.description, COUNT(p.id) AS post_count
FROM series s
LEFT JOIN posts p ON p.series_id = s.id
GROUP BY s.id, s.name, s.slug, s.description
ORDER BY s.name COLLATE NOCASE ASC`
)
.all();
return {
series: results as unknown as Array<{
id: number;
name: string;
slug: string;
description: string | null;
post_count: number;
}>
};
} catch (err) {
console.error('Error fetching series:', err);
return { series: [] };
}
};
export const actions: Actions = {
create: async ({ request, platform }) => {
const db = platform?.env?.DB;
if (!db) return fail(500, { error: '数据库未连接' });
const formData = await request.formData();
const name = formData.get('name')?.toString().trim() || '';
const slug = makeSlug(formData.get('slug')?.toString() || name);
const description = formData.get('description')?.toString().trim() || null;
if (!name || !slug) return fail(400, { error: '系列名称和 URL 别名不能为空' });
try {
const created = await db
.prepare(
'INSERT INTO series (name, slug, description) VALUES (?, ?, ?) RETURNING id, name, slug, description'
)
.bind(name, slug, description)
.first();
return { success: true, series: created };
} catch (err: unknown) {
console.error('Error creating series:', err);
if (isUniqueConstraintError(err)) {
return fail(400, { error: '系列名称或 URL 别名已存在' });
}
return fail(500, { error: '创建系列失败' });
}
},
update: async ({ request, platform }) => {
const db = platform?.env?.DB;
if (!db) return fail(500, { error: '数据库未连接' });
const formData = await request.formData();
const id = Number(formData.get('id'));
const name = formData.get('name')?.toString().trim() || '';
const slug = makeSlug(formData.get('slug')?.toString() || '');
const description = formData.get('description')?.toString().trim() || null;
if (!Number.isInteger(id) || id <= 0 || !name || !slug) {
return fail(400, { error: '系列信息不完整' });
}
try {
await db
.prepare('UPDATE series SET name = ?, slug = ?, description = ? WHERE id = ?')
.bind(name, slug, description, id)
.run();
return { success: true };
} catch (err: unknown) {
console.error('Error updating series:', err);
if (isUniqueConstraintError(err)) {
return fail(400, { error: '系列名称或 URL 别名已存在' });
}
return fail(500, { error: '更新系列失败' });
}
},
delete: async ({ request, platform }) => {
const db = platform?.env?.DB;
if (!db) return fail(500, { error: '数据库未连接' });
const formData = await request.formData();
const id = Number(formData.get('id'));
if (!Number.isInteger(id) || id <= 0) return fail(400, { error: '系列 ID 无效' });
try {
await db.batch([
db
.prepare('UPDATE posts SET series_id = NULL, series_weight = NULL WHERE series_id = ?')
.bind(id),
db.prepare('DELETE FROM series WHERE id = ?').bind(id)
]);
return { success: true };
} catch (err) {
console.error('Error deleting series:', err);
return fail(500, { error: '删除系列失败' });
}
}
};
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<script lang="ts">
import { page } from '$app/stores';
import { resolve } from '$app/paths';
import type { ActionData, PageData } from './$types';
let { data, form }: { data: PageData; form: ActionData } = $props();
let name = $state('');
let slug = $state('');
function handleNameInput() {
if (!slug) {
slug = name
.toLowerCase()
.replace(/[^\w\u4e00-\u9fa5\s-]/g, '')
.replace(/\s+/g, '-');
}
}
</script>
<div class="admin-page-header">
<h2>{$page.data.aliases?.series || '系列'}管理</h2>
</div>
{#if form?.error}
<div class="error-alert">{form.error}</div>
{/if}
<div class="series-grid-layout">
<section class="create-series-card">
<h3>新{$page.data.aliases?.series || '系列'}</h3>
<form method="POST" action="?/create">
<label for="name">名称 *</label>
<input
id="name"
name="name"
type="text"
bind:value={name}
oninput={handleNameInput}
required
/>
<label for="slug">URL 别名 *</label>
<input id="slug" name="slug" type="text" bind:value={slug} required />
<label for="description">描述</label>
<textarea
id="description"
name="description"
rows="5"
placeholder="介绍这个系列的主题和阅读顺序"></textarea>
<button type="submit" class="btn btn-primary">创建</button>
</form>
</section>
<section class="series-list">
{#if data.series.length === 0}
<div class="empty-state">暂无系列。</div>
{:else}
{#each data.series as item (item.id)}
<article class="series-editor">
<form method="POST" action="?/update">
<input type="hidden" name="id" value={item.id} />
<div class="editor-heading">
<strong>{item.name}</strong>
<span class="badge">{item.post_count} 篇文章</span>
</div>
<div class="field-row">
<div>
<label for="name-{item.id}">名称</label>
<input id="name-{item.id}" name="name" type="text" value={item.name} required />
</div>
<div>
<label for="slug-{item.id}">URL 别名</label>
<input id="slug-{item.id}" name="slug" type="text" value={item.slug} required />
</div>
</div>
<label for="description-{item.id}">描述</label>
<textarea
id="description-{item.id}"
name="description"
rows="3"
value={item.description || ''}></textarea>
<button type="submit" class="action-btn">保存修改</button>
<a
href={resolve('/series/[slug]', { slug: item.slug })}
target="_blank"
class="action-btn">查看</a
>
</form>
<form
method="POST"
action="?/delete"
class="delete-form"
onsubmit={(event) => {
if (!confirm(`确定删除系列“${item.name}”吗?相关文章会保留,但不再属于任何系列。`))
event.preventDefault();
}}
>
<input type="hidden" name="id" value={item.id} />
<button type="submit" class="action-btn delete">删除</button>
</form>
</article>
{/each}
{/if}
</section>
</div>
<style>
.admin-page-header {
margin-bottom: 25px;
border-bottom: 2px solid var(--text-color);
padding-bottom: 12px;
}
.admin-page-header h2 {
margin: 0;
font-size: 2rem;
}
.error-alert {
padding: 12px 16px;
border-left: 4px solid #d9534f;
color: #d9534f;
margin-bottom: 24px;
font-weight: 600;
}
.series-grid-layout {
display: grid;
grid-template-columns: 300px 1fr;
gap: 30px;
align-items: start;
}
.create-series-card h3 {
margin: 0 0 20px;
font-size: 0.9rem;
letter-spacing: 1px;
text-transform: uppercase;
}
label {
display: block;
margin: 18px 0 8px;
font-size: 0.85rem;
font-weight: 700;
letter-spacing: 0.5px;
}
input,
textarea {
width: 100%;
box-sizing: border-box;
padding: 10px 0;
border: 0;
border-bottom: 2px solid rgba(0, 0, 0, 0.12);
background: transparent;
color: var(--text-color);
font: inherit;
}
textarea {
padding: 10px;
border: 1px solid rgba(0, 0, 0, 0.15);
resize: vertical;
}
input:focus,
textarea:focus {
outline: none;
border-color: var(--accent-color, #419b38);
}
.btn {
width: 100%;
margin-top: 20px;
padding: 10px 20px;
border: 1px solid var(--text-color);
background: var(--text-color);
color: var(--bg-color);
font: inherit;
font-weight: 600;
cursor: pointer;
}
.btn:hover {
background: var(--accent-color, #419b38);
border-color: var(--accent-color, #419b38);
color: white;
}
.series-list {
display: grid;
gap: 18px;
}
.series-editor {
position: relative;
border: 2px solid var(--text-color);
padding: 18px;
}
.editor-heading {
display: flex;
justify-content: space-between;
gap: 16px;
align-items: center;
}
.field-row {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 18px;
}
.action-btn {
display: inline-block;
margin: 16px 14px 0 0;
padding: 0;
border: 0;
background: transparent;
color: var(--text-color);
font: inherit;
cursor: pointer;
text-decoration: none;
}
.action-btn:hover {
color: var(--accent-color, #419b38);
text-decoration: underline;
text-underline-offset: 4px;
}
.delete-form {
position: absolute;
right: 4px;
bottom: 18px;
}
.action-btn.delete:hover {
color: #d9534f;
}
.empty-state {
border: 2px solid var(--text-color);
padding: 50px 20px;
text-align: center;
color: var(--text-muted);
}
@media (max-width: 800px) {
.series-grid-layout,
.field-row {
grid-template-columns: 1fr;
}
.delete-form {
position: static;
}
}
</style>