transform.PortableText
返回转换为 Markdown 后的给定 Portable Text。
(0.145.0 新增)
用法
Portable Text 是一种 JSON 结构,用于表示 Sanity CMS 中的富文本内容。在 Hugo 中,该函数通常用在内容适配器里,由 Sanity 数据创建页面。
支持的类型:
block与spanimage。注意目前对图像的处理比较基础:我们用asset.url作为链接,用asset.altText作为图像替代文本,用asset.title作为标题。如果需要更精细的控制,可以在图像渲染钩子中处理图像。code(参见 code-input 插件)。代码会渲染为围栏代码块,其中提供的文件名会作为 Markdown 属性传入。
示例
下面的示例用内容适配器从 Sanity 数据创建页面。
内容适配器
{{ $projectID := "mysanityprojectid" }}
{{ $useCached := true }}
{{ $api := "api" }}
{{ if $useCached }}
{{/* See https://www.sanity.io/docs/api-cdn */}}
{{ $api = "apicdn" }}
{{ end }}
{{ $url := printf "https://%s.%s.sanity.io/v2021-06-07/data/query/production" $projectID $api }}
{{ $q := `*[_type == 'post']{
title, publishedAt, summary, slug, body[]{
...,
_type == "image" => {
...,
asset->{
_id,
path,
url,
altText,
title,
description,
metadata {
dimensions {
aspectRatio,
width,
height
}
}
}
}
},
}`
}}
{{ $body := dict "query" $q | jsonify }}
{{ $opts := dict "method" "post" "body" $body }}
{{ $r := resources.GetRemote $url $opts }}
{{ $m := $r | transform.Unmarshal }}
{{ $result := $m.result }}
{{ range $result }}
{{ if not .slug }}
{{ continue }}
{{ end }}
{{ $markdown := transform.PortableText .body }}
{{ $content := dict
"mediaType" "text/markdown"
"value" $markdown
}}
{{ $params := dict
"portabletext" (.body | jsonify (dict "indent" " "))
}}
{{ $page := dict
"content" $content
"kind" "page"
"path" .slug.current
"title" .title
"date" (.publishedAt | time )
"summary" .summary
"params" $params
}}
{{ $.AddPage $page }}
{{ end }}Sanity 设置
下面概述了适合上述示例的 Sanity studio 设置。
import {defineConfig} from 'sanity'
import {structureTool} from 'sanity/structure'
import {visionTool} from '@sanity/vision'
import {schemaTypes} from './schemaTypes'
import {media} from 'sanity-plugin-media'
import {codeInput} from '@sanity/code-input'
export default defineConfig({
name: 'default',
title: 'my-sanity-project',
projectId: 'mysanityprojectid',
dataset: 'production',
plugins: [structureTool(), visionTool(), media(),codeInput()],
schema: {
types: schemaTypes,
},
})类型与 schema 定义:
import {defineField, defineType} from 'sanity'
export const postType = defineType({
name: 'post',
title: 'Post',
type: 'document',
fields: [
defineField({
name: 'title',
type: 'string',
validation: (rule) => rule.required(),
}),
defineField({
name: 'summary',
type: 'string',
validation: (rule) => rule.required(),
}),
defineField({
name: 'slug',
type: 'slug',
options: {source: 'title'},
validation: (rule) => rule.required(),
}),
defineField({
name: 'publishedAt',
type: 'datetime',
initialValue: () => new Date().toISOString(),
validation: (rule) => rule.required(),
}),
defineField({
name: 'body',
type: 'array',
of: [
{
type: 'block',
},
{
type: 'image'
},
{
type: 'code',
options: {
language: 'css',
languageAlternatives: [
{title: 'HTML', value: 'html'},
{title: 'CSS', value: 'css'},
],
withFilename: true,
},
},
],
}),
],
})注意上面还需要额外安装一些插件:
npm i sanity-plugin-media @sanity/code-inputimport {postType} from './postType'
export const schemaTypes = [postType]服务器设置
遗憾的是,Sanity 的 API 不支持 RFC 7234,而且即使数据没有变化,它的输出也会变。因此推荐的设置是使用它们带缓存的 apicdn 端点(见上文),再在 Hugo 配置里安排合理的轮询与文件缓存策略,例如:
[HTTPCache]
[[HTTPCache.polls]]
disable = false
low = '30s'
high = '3m'
[HTTPCache.polls.for]
includes = ['https://*.*.sanity.io/**']
[caches.getresource]
dir = ':cacheDir/:project'
maxAge = "5m"上面的轮询配置在运行服务器或监听模式时生效,并在你向 Sanity 推送新内容时触发重新构建。
更精细的控制参见 resources.GetRemote 中的缓存。