Queries-BibliothekBeitrag von einer anderen WordPress-Seite importieren
Beitrag von einer anderen WordPress-Seite importieren
Diese query importiert einen Beitrag von einer vorgelagerten WordPress-Seite in unsere lokale WordPress-Seite.
Das Gato GraphQL-Plugin (kostenlose Version) muss auf der vorgelagerten Website installiert sein.
Die im Beitrag referenzierten Ressourcen müssen alle lokal vorhanden sein:
- Der Autor
- Das Beitragsbild (falls vorhanden)
- Die Kategorien
- (Auch Tags, falls diese jedoch noch nicht existieren, werden sie zusammen mit dem Beitrag erstellt, was kein Problem darstellt)
Als gemeinsamen Bezeichner für Ressourcen zwischen der vorgelagerten und der lokalen Seite verwenden wir:
- Slugs für Kategorien, Tags und Medienelemente
- Benutzernamen für Benutzer
Falls eine der Ressourcen auf der lokalen Seite nicht existiert, gibt die GraphQL-query einen Fehler aus und bricht den Import ab.
Die Variable $upstreamServerGraphQLEndpointURL ist der Gato GraphQL-Endpunkt auf der vorgelagerten WordPress-Seite, und $postSlug ist der Slug des zu importierenden Beitrags.
query InitializeDynamicVariables
@configureWarningsOnExportingDuplicateVariable(enabled: false)
{
initVariablesWithFalse: _echo(value: false)
@export(as: "requestProducedErrors")
@export(as: "responseHasErrors")
@export(as: "postIsMissing")
@export(as: "postHasAuthor")
@export(as: "postHasFeaturedImage")
@export(as: "postHasCategories")
@export(as: "postHasTags")
@remove
initVariablesWithNull: _echo(value: null)
@export(as: "existingAuthorUsername")
@export(as: "existingFeaturedImageSlug")
@export(as: "featuredImageMutationInput")
@remove
initVariablesWithEmptyArray: _echo(value: [])
@export(as: "existingCategorySlugs")
@export(as: "existingTagSlugs")
@remove
}
query CheckIfPostExistsLocally($postSlug: String!)
@depends(on: "InitializeDynamicVariables")
{
localPost: post(
by: { slug: $postSlug }
status: any
) {
id
}
postAlreadyExists: _notNull(value: $__localPost)
@export(as: "postAlreadyExists")
}
query FailIfPostAlreadyExistsLocally($postSlug: String!)
@depends(on: "CheckIfPostExistsLocally")
@include(if: $postAlreadyExists)
{
errorMessage: _sprintf(
string: "Post with slug '%s' already exists locally",
values: [$postSlug]
) @remove
_fail(
message: $__errorMessage
data: {
slug: $postSlug
}
) @remove
createPost: _echo(value: null)
}
query ConnectToGraphQLAPI(
$upstreamServerGraphQLEndpointURL: String!
$postSlug: String!
)
@depends(on: "FailIfPostAlreadyExistsLocally")
@skip(if: $postAlreadyExists)
{
externalData: _sendGraphQLHTTPRequest(input:{
endpoint: $upstreamServerGraphQLEndpointURL,
query: """
query GetPost($postSlug: String!) {
post(by: { slug: $postSlug }, status: any) {
id
slug
rawTitle
rawContent
rawExcerpt
author {
id
username
}
featuredImage {
id
slug
}
categories {
id
slug
}
tags {
id
slug
}
}
}
""",
variables: [
{
name: "postSlug",
value: $postSlug
}
]
})
@export(as: "externalData")
requestProducedErrors: _isNull(value: $__externalData)
@export(as: "requestProducedErrors")
@remove
}
query ValidateResponse
@depends(on: "ConnectToGraphQLAPI")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
{
responseHasErrors: _propertyIsSetInJSONObject(
object: $externalData
by: {
key: "errors"
}
)
@export(as: "responseHasErrors")
@remove
postExists: _propertyIsSetInJSONObject(
object: $externalData
by: {
path: "data.post"
}
)
@remove
postIsMissing: _not(value: $__postExists)
@export(as: "postIsMissing")
@remove
}
query FailIfResponseHasErrors
@depends(on: "ValidateResponse")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $postIsMissing)
@include(if: $responseHasErrors)
{
errors: _objectProperty(
object: $externalData,
by: {
key: "errors"
}
) @remove
_fail(
message: "Executing the GraphQL query against the upstream webserver produced error(s)"
data: {
errors: $__errors
}
) @remove
createPost: _echo(value: null)
}
query FailIfPostNotExists($postSlug: String!)
@depends(on: "FailIfResponseHasErrors")
@skip(if: $requestProducedErrors)
@include(if: $postIsMissing)
{
errorMessage: _sprintf(
string: "There is no post with slug '%s' in the origin",
values: [$postSlug]
) @remove
_fail(
message: $__errorMessage
data: {
slug: $postSlug
}
) @remove
createPost: _echo(value: null)
}
query ExportInputs
@depends(on: "FailIfPostNotExists")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $responseHasErrors)
@skip(if: $postIsMissing)
{
postData: _objectProperty(
object: $externalData,
by: { path: "data.post" }
) @remove
postTitle: _objectProperty(
object: $__postData,
by: { key: "rawTitle" }
)
@export(as: "postTitle")
@remove
postContent: _objectProperty(
object: $__postData,
by: { key: "rawContent" }
)
@export(as: "postContent")
@remove
postExcerpt: _objectProperty(
object: $__postData,
by: { key: "rawExcerpt" }
)
@export(as: "postExcerpt")
@remove
postAuthorUsername: _objectProperty(
object: $__postData,
by: { key: "author" }
)
@passOnwards(
as: "author"
)
@applyField(
name: "_notNull",
arguments: {
value: $author
},
passOnwardsAs: "hasAuthor"
)
@if(condition: $hasAuthor)
@applyField(
name: "_objectProperty",
arguments: {
object: $author,
by: { key: "username" }
},
setResultInResponse: true
)
@export(as: "postAuthorUsername")
@remove
postHasAuthor: _notNull(
value: $__postAuthorUsername
)
@export(as: "postHasAuthor")
@remove
postFeaturedImageSlug: _objectProperty(
object: $__postData,
by: { key: "featuredImage" }
)
@passOnwards(
as: "featuredImage"
)
@applyField(
name: "_notNull",
arguments: {
value: $featuredImage
},
passOnwardsAs: "hasFeaturedImage"
)
@if(condition: $hasFeaturedImage)
@applyField(
name: "_objectProperty",
arguments: {
object: $featuredImage,
by: { key: "slug" }
},
setResultInResponse: true
)
@export(as: "postFeaturedImageSlug")
@remove
postHasFeaturedImage: _notNull(
value: $__postFeaturedImageSlug
)
@export(as: "postHasFeaturedImage")
@remove
postCategorySlugs: _objectProperty(
object: $__postData,
by: { key: "categories" }
)
@underEachArrayItem(
passValueOnwardsAs: "category"
)
@applyField(
name: "_objectProperty"
arguments: {
object: $category,
by: {
key: "slug"
}
}
setResultInResponse: true
)
@export(as: "postCategorySlugs")
@remove
postHasCategories: _notEmpty(
value: $__postCategorySlugs
)
@export(as: "postHasCategories")
@remove
postTagSlugs: _objectProperty(
object: $__postData,
by: { key: "tags" }
)
@underEachArrayItem(
passValueOnwardsAs: "tag"
)
@applyField(
name: "_objectProperty"
arguments: {
object: $tag,
by: {
key: "slug"
}
}
setResultInResponse: true
)
@export(as: "postTagSlugs")
@remove
postHasTags: _notEmpty(
value: $__postTagSlugs
)
@export(as: "postHasTags")
@remove
}
query ExportExistingResources
@depends(on: "ExportInputs")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $responseHasErrors)
@skip(if: $postIsMissing)
{
existingAuthorByUsername: user(by: { username: $postAuthorUsername })
@include(if: $postHasAuthor)
{
id
username @export(as: "existingAuthorUsername")
}
existingFeaturedImageBySlug: mediaItem(by: { slug: $postFeaturedImageSlug })
@include(if: $postHasFeaturedImage)
{
id
slug @export(as: "existingFeaturedImageSlug")
}
existingCategoriesBySlug: postCategories(filter: { slugs: $postCategorySlugs })
@include(if: $postHasCategories)
{
id
slug @export(as: "existingCategorySlugs", type: LIST)
}
existingTagsBySlug: postTags(filter: { slugs: $postTagSlugs })
@include(if: $postHasTags)
{
id
slug @export(as: "existingTagSlugs", type: LIST)
}
}
query ExportMissingResources
@depends(on: "ExportExistingResources")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $responseHasErrors)
@skip(if: $postIsMissing)
{
isAuthorMissing: _notEquals(
value1: $postAuthorUsername,
value2: $existingAuthorUsername
) @export(as: "isAuthorMissing")
isFeaturedImageMissing: _notEquals(
value1: $postFeaturedImageSlug,
value2: $existingFeaturedImageSlug
) @export(as: "isFeaturedImageMissing")
missingCategorySlugs: _arrayDiff(
arrays: [$postCategorySlugs, $existingCategorySlugs]
) @export(as: "missingCategorySlugs")
areCategoriesMissing: _notEmpty(
value: $__missingCategorySlugs
) @export(as: "areCategoriesMissing")
# missingTagSlugs: _arrayDiff(
# arrays: [$postTagSlugs, $existingTagSlugs]
# ) @export(as: "missingTagSlugs")
# areTagsMissing: _notEmpty(
# value: $__missingTagSlugs
# ) @export(as: "areTagsMissing")
isAnyResourceMissing: _or(
values: [
$__isAuthorMissing,
$__isFeaturedImageMissing,
$__areCategoriesMissing,
# $__areTagsMissing,
]
) @export(as: "isAnyResourceMissing")
}
query FailIfAnyResourceIsMissing
@depends(on: "ExportMissingResources")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $postIsMissing)
@skip(if: $responseHasErrors)
@include(if: $isAnyResourceMissing)
{
performingValidations: id
@if(condition: $isAuthorMissing)
@fail(
message: "Author is missing in local site"
data: {
missingAuthorByUsername: $postAuthorUsername
}
condition: ALWAYS
)
@if(condition: $isFeaturedImageMissing)
@fail(
message: "Featured image is missing in local site"
data: {
missingFeaturedImageBySlug: $postFeaturedImageSlug
}
condition: ALWAYS
)
@if(condition: $areCategoriesMissing)
@fail(
message: "Categories are missing in local site"
data: {
missingCategoriesBySlug: $missingCategorySlugs
}
condition: ALWAYS
)
# @if(condition: $areTagsMissing)
# @fail(
# message: "Tags are missing in local site"
# data: {
# missingTagBySlug: $missingTagSlugs
# }
# condition: ALWAYS
# )
createPost: _echo(value: null)
}
query ExportMutationInputs
@depends(on: "FailIfAnyResourceIsMissing")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $responseHasErrors)
@skip(if: $postIsMissing)
@skip(if: $isAnyResourceMissing)
{
featuredImageMutationInput: _echo(value: {
slug: $postFeaturedImageSlug
})
@include(if: $postHasFeaturedImage)
@export(as: "featuredImageMutationInput")
@remove
}
mutation ImportPostFromWPSite(
$postSlug: String!
)
@depends(on: "ExportMutationInputs")
@skip(if: $postAlreadyExists)
@skip(if: $requestProducedErrors)
@skip(if: $responseHasErrors)
@skip(if: $postIsMissing)
@skip(if: $isAnyResourceMissing)
{
createPost(input: {
status: draft,
slug: $postSlug
title: $postTitle
contentAs: {
html: $postContent
},
excerpt: $postExcerpt
authorBy: {
username: $postAuthorUsername
},
featuredImageBy: $featuredImageMutationInput,
categoriesBy: {
slugs: $postCategorySlugs
},
tagsBy: {
slugs: $postTagSlugs
}
}) {
status
errors {
__typename
...on ErrorPayload {
message
}
}
post {
id
date
status
slug
title
content
excerpt
author {
id
username
}
featuredImage {
id
slug
}
categories {
id
slug
}
tags {
id
slug
}
}
}
}