Schema 教程第9课:批量插入/删除(Gutenberg)块
第9课:批量插入/删除(Gutenberg)块
我们可以通过修改(Gutenberg)块的 HTML 内容来更新文章。
这在推广活动(例如黑色星期五打折优惠)等场景中尤为实用:
- 活动前,创建包含行动号召的自定义块
mycompany:black-friday-campaign-video,并执行批量操作将其添加到网站所有文章 - 活动结束后,执行批量操作从所有文章中删除该块
要使本教程课程中的 GraphQL queries 正常运行,应用于端点的Schema 配置需要启用嵌套 Mutations
批量插入块
以下 GraphQL query 在文章中定位第 3 个段落块(通过搜索 <!-- /wp:paragraph --> 识别),并将自定义块的 HTML 内容插入其后:
mutation InjectBlock(
$limit: Int! = 5,
$offset: Int! = 0
) {
posts: posts(
pagination: { limit: $limit, offset: $offset }
sort: { by: ID, order: ASC }
) {
id
rawContent
adaptedRawContent: _strRegexReplace(
in: $__rawContent,
searchRegex: "#(<!-- /wp:paragraph -->[\\s\\S]+<!-- /wp:paragraph -->[\\s\\S]+<!-- /wp:paragraph -->)#U",
replaceWith: "$1<!-- mycompany:black-friday-campaign-video -->\n<figure class=\"wp-block-video\"><video controls src=\"https://mysite.com/videos/BlackFriday2023.mp4\"></video></figure>\n<!-- /mycompany:black-friday-campaign-video -->",
limit: 1
)
update(input: {
contentAs: { html: $__adaptedRawContent },
}) {
status
errors {
__typename
...on ErrorPayload {
message
}
}
post {
id
rawContent
}
}
}
}使用更多选项插入块
以下 GraphQL query 与前一个类似,但会动态生成正则表达式,允许我们输入要搜索的块类型,以及在第几个此类块之后插入自定义块:
query CreateRegex(
$searchBlockType: String! = "wp:paragraph"
$injectAfterBlockCount: Int!
$injectBlockMarkup: String!
) {
endingBlockMarkup: _sprintf(
string: "<!-- /%s -->",
values: [$searchBlockType]
)
@remove
endingBlockMarkupArray: _arrayPad(
array: [],
length: $injectAfterBlockCount,
value: $__endingBlockMarkup
)
@remove
regexString: _arrayJoin(
array: $__endingBlockMarkupArray,
separator: "[\\s\\S]+"
)
@remove
regex: _sprintf(
string: "#(%s)#U",
values: [$__regexString]
)
@export(as: "regex")
@remove
replaceWith: _sprintf(
string: "$1%s",
values: [$injectBlockMarkup]
)
@export(as: "replaceWith")
@remove
}
mutation InjectBlock(
$limit: Int! = 5,
$offset: Int! = 0
$times: Int! = 1
)
@depends(on: "CreateRegex")
{
posts: posts(
pagination: { limit: $limit, offset: $offset }
sort: { by: ID, order: ASC }
) {
id
rawContent
adaptedRawContent: _strRegexReplace(
in: $__rawContent,
searchRegex: $regex,
replaceWith: $replaceWith,
limit: $times
)
update(input: {
contentAs: { html: $__adaptedRawContent },
}) {
status
errors {
__typename
...on ErrorPayload {
message
}
}
post {
id
rawContent
}
}
}
}variables 字典的格式如下:
{
"injectBlockMarkup": "<!-- mycompany:black-friday-campaign-video -->\n<figure class=\"wp-block-video\"><video controls src=\"https://mysite.com/videos/BlackFriday2023.mp4\"></video></figure>\n<!-- /mycompany:black-friday-campaign-video -->",
"injectAfterBlockCount": 3
}- 在 GraphQL query 的开发/测试阶段,可在
@remove指令前加#将其注释掉,从而在响应中输出正则表达式模式:
{
field
# @remove <= Adding "#" before will disable the directive
}批量删除块
以下 GraphQL query 搜索所有包含自定义块的文章,并从其 HTML 源码中删除该块:
mutation RemoveBlock {
posts(filter: { search: "\"<!-- /mycompany:black-friday-campaign-video -->\"" } ) {
id
rawContent
adaptedRawContent: _strRegexReplace(
in: $__rawContent,
searchRegex: "#(<!-- mycompany:black-friday-campaign-video -->[\\s\\S]+<!-- /mycompany:black-friday-campaign-video -->)#",
replaceWith: ""
)
update(input: {
contentAs: { html: $__adaptedRawContent },
}) {
status
errors {
__typename
...on ErrorPayload {
message
}
}
post {
id
rawContent
}
}
}
}使用更多选项删除块
以下 GraphQL query 与前一个类似,但会动态生成正则表达式,允许我们输入要删除的块类型:
query CreateVars(
$removeBlockType: String!
) {
regex: _sprintf(
string: "#(<!-- %1$s -->[\\s\\S]+<!-- /%1$s -->)#",
values: [$removeBlockType]
)
@export(as: "regex")
@remove
search: _sprintf(
string: "\"<!-- /%1$s -->\"",
values: [$removeBlockType]
)
@export(as: "search")
@remove
}
mutation RemoveBlock
@depends(on: "CreateVars")
{
posts(filter: { search: $search } ) {
id
rawContent
adaptedRawContent: _strRegexReplace(
in: $__rawContent,
searchRegex: $regex,
replaceWith: ""
)
update(input: {
contentAs: { html: $__adaptedRawContent },
}) {
status
errors {
__typename
...on ErrorPayload {
message
}
}
post {
id
rawContent
}
}
}
}variables 字典的格式如下:
{
"removeBlockType": "mycompany:black-friday-campaign-video"
}Prev
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