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创建博客

本页内容

本指南将带你使用 EmDash 从零搭建博客：从定义内容类型，到展示带分类与标签的文章。

前提条件

  • 已搭建并运行 EmDash 站点（参见快速入门）
  • 了解 Astro 组件的基础用法

定义文章集合

EmDash 在初始化时会创建默认的「posts」集合。如需自定义，请使用管理后台或 API。

默认 posts 集合包含：

  • title — 文章标题
  • slug — 适合 URL 的标识符
  • content — 富文本正文
  • excerpt — 摘要
  • featured_image — 头图（可选）
  • status — 草稿、已发布或定时
  • publishedAt — 发布时间（系统字段）

创建第一篇文章

  1. 打开管理后台 /_emdash/admin

  2. 在侧栏点击 Posts

    EmDash 文章列表，显示标题、状态和日期

  3. 点击 New Post

    EmDash 文章编辑器，含标题、内容与发布选项

  4. 输入标题，并用富文本编辑器撰写正文

  5. 在侧栏面板添加分类与标签

  6. 将状态设为 Published

  7. 点击 Save

文章立即上线，无需重新构建站点。

在站点上展示文章

列出全部文章

创建页面展示所有已发布文章：

---
import { getEmDashCollection } from "emdash";
import Base from "../../layouts/Base.astro";

const { entries: posts } = await getEmDashCollection("posts", {
  status: "published",
});

// Sort by publication date, newest first
const sortedPosts = posts.sort(
  (a, b) => (b.data.publishedAt?.getTime() ?? 0) - (a.data.publishedAt?.getTime() ?? 0)
);
---

<Base title="Blog">
  <h1>Blog</h1>
  <ul>
    {sortedPosts.map((post) => (
      <li>
        <a href={`/blog/${post.data.slug}`}>
          <h2>{post.data.title}</h2>
          <p>{post.data.excerpt}</p>
          <time datetime={post.data.publishedAt?.toISOString()}>
            {post.data.publishedAt?.toLocaleDateString()}
          </time>
        </a>
      </li>
    ))}
  </ul>
</Base>

展示单篇文章

为每篇文章创建动态路由：

---
import { getEmDashCollection, getEmDashEntry } from "emdash";
import { PortableText } from "emdash/ui";
import Base from "../../layouts/Base.astro";

export async function getStaticPaths() {
  const { entries: posts } = await getEmDashCollection("posts", {
    status: "published",
  });

  return posts.map((post) => ({
    params: { slug: post.data.slug },
  }));
}

const { slug } = Astro.params;
const { entry: post } = await getEmDashEntry("posts", slug);

if (!post) {
  return Astro.redirect("/404");
}
---

<Base title={post.data.title}>
  <article>
    {post.data.featured_image && (
      <img src={post.data.featured_image} alt="" />
    )}
    <h1>{post.data.title}</h1>
    <time datetime={post.data.publishedAt?.toISOString()}>
      {post.data.publishedAt?.toLocaleDateString()}
    </time>
    <PortableText value={post.data.content} />
  </article>
</Base>

添加分类与标签

EmDash 内置分类与标签分类法。详见分类法以创建与管理词条。

按分类筛选文章

---
import { getEmDashCollection, getTerm, getTaxonomyTerms } from "emdash";
import Base from "../../layouts/Base.astro";

export async function getStaticPaths() {
  const categories = await getTaxonomyTerms("category");

  // Flatten hierarchical categories
  const flatten = (terms) => terms.flatMap((t) => [t, ...flatten(t.children)]);

  return flatten(categories).map((cat) => ({
    params: { slug: cat.slug },
    props: { category: cat },
  }));
}

const { category } = Astro.props;

const { entries: posts } = await getEmDashCollection("posts", {
  status: "published",
  where: { category: category.slug },
});
---

<Base title={category.label}>
  <h1>{category.label}</h1>
  {category.description && <p>{category.description}</p>}

  <ul>
    {posts.map((post) => (
      <li>
        <a href={`/blog/${post.data.slug}`}>{post.data.title}</a>
      </li>
    ))}
  </ul>
</Base>

在文章上显示分类

在单篇文章中展示分类：

---
import { getEntryTerms } from "emdash";

interface Props {
  postId: string;
}

const { postId } = Astro.props;
const categories = await getEntryTerms("posts", postId, "category");
const tags = await getEntryTerms("posts", postId, "tag");
---

<div class="post-meta">
  {categories.length > 0 && (
    <div class="categories">
      <span>Categories:</span>
      {categories.map((cat) => (
        <a href={`/category/${cat.slug}`}>{cat.label}</a>
      ))}
    </div>
  )}

  {tags.length > 0 && (
    <div class="tags">
      <span>Tags:</span>
      {tags.map((tag) => (
        <a href={`/tag/${tag.slug}`}>{tag.label}</a>
      ))}
    </div>
  )}
</div>

添加分页

文章较多时添加分页：

---
import { getEmDashCollection } from "emdash";
import Base from "../../../layouts/Base.astro";

const POSTS_PER_PAGE = 10;

export async function getStaticPaths() {
  const { entries: allPosts } = await getEmDashCollection("posts", {
    status: "published",
  });

  const totalPages = Math.ceil(allPosts.length / POSTS_PER_PAGE);

  return Array.from({ length: totalPages }, (_, i) => ({
    params: { page: String(i + 1) },
    props: { currentPage: i + 1, totalPages },
  }));
}

const { currentPage, totalPages } = Astro.props;

const { entries: allPosts } = await getEmDashCollection("posts", {
  status: "published",
});

const sortedPosts = allPosts.sort(
  (a, b) => (b.data.publishedAt?.getTime() ?? 0) - (a.data.publishedAt?.getTime() ?? 0)
);

const start = (currentPage - 1) * POSTS_PER_PAGE;
const posts = sortedPosts.slice(start, start + POSTS_PER_PAGE);
---

<Base title={`Blog - Page ${currentPage}`}>
  <h1>Blog</h1>

  <ul>
    {posts.map((post) => (
      <li>
        <a href={`/blog/${post.data.slug}`}>{post.data.title}</a>
      </li>
    ))}
  </ul>

  <nav>
    {currentPage > 1 && (
      <a href={`/blog/page/${currentPage - 1}`}>Previous</a>
    )}
    <span>Page {currentPage} of {totalPages}</span>
    {currentPage < totalPages && (
      <a href={`/blog/page/${currentPage + 1}`}>Next</a>
    )}
  </nav>
</Base>

添加 RSS 订阅

为博客生成 RSS：

import rss from "@astrojs/rss";
import { getEmDashCollection } from "emdash";

export async function GET(context) {
	const { entries: posts } = await getEmDashCollection("posts", {
		status: "published",
	});

	return rss({
		title: "My Blog",
		description: "A blog built with EmDash",
		site: context.site,
		items: posts.map((post) => ({
			title: post.data.title,
			pubDate: post.data.publishedAt,
			description: post.data.excerpt,
			link: `/blog/${post.data.slug}`,
		})),
	});
}

若尚未安装 RSS 包：

npm install @astrojs/rss

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