我的任务是使用新的Gutenberg API（而不是任何WP PHP）阻止addFilter()在某些自定义帖子类型上运行。当前已将其输入到editor.PostFeaturedImage挂钩中，这意味着它会在Gutenberg编辑器每次加载“特色图像”框时触发。
过滤器调用一个函数，该函数会在“特色图片”框下方添加一个下拉菜单，以允许用户选择一个贡献者（它们本身是自定义帖子类型）以将该图片存入图片。
过滤器不应在贡献者自定义帖子类型上运行，而应在其他自定义帖子类型上运行。贡献者自定义帖子类型仍然应该有一个特色图片框，但没有下拉菜单。
让钩子触发然后在函数内取消是可行的，但是函数本身占用大量资源，而伪指令则是完全防止触发函数。这个想法是内置钩子/函数会触发。
Borrowing from this ticket，我试图将主函数setFeaturedImageArtist放在匿名函数内，该匿名函数也将帖子类型打印到addFilter()的控制台中。我可以打印帖子的类型，但是调用setFeaturedImageArtist函数无法按预期工作。
wp.hooks.addFilter( 'editor.PostFeaturedImage', 'blocks/featured-image-artist', function() {
console.log(wp.data.select("core/editor").getCurrentPostType())
return setFeaturedImageArtist()
});
将setFeaturedImageArtist放在这样的包装函数中也不起作用。我以为是因为是同一回事。
function checkPostType() {
console.log(wp.data.select("core/editor").getCurrentPostType())
return setFeaturedImageArtist()
}
wp.hooks.addFilter( 'editor.PostFeaturedImage', 'blocks/featured-image-artist', checkPostType);
以下是过滤器触发的组件：
function setFeaturedImageArtist( OriginalComponent ) {
return ( props ) => {
const artistSelect = compose.compose(
withDispatch( function( dispatch, props ) {
return {
setMetaValue: function( metaValue ) {
dispatch( 'core/editor' ).editPost(
{ meta: { 'featured-image-artist': metaValue } }
);
}
}
} ),
withSelect( function( select, props ) {
let query = {
per_page : 20,
metaKey : '_author_type',
metaValue : 'artist'
};
let postType = select("core/editor").getCurrentPostType();
if ( postType === 'contributor' ) {
return null
}
// Please see below
// if ( postType === 'contributor' ) {
// return {
// postType
// }
// }
return {
posts: select( 'core' ).getEntityRecords( 'postType', 'contributor', query ),
metaValue: select( 'core/editor' ).getEditedPostAttribute( 'meta' )[ 'featured-image-artist' ],
}
} ) )( function( props ) {
var options = [];
// This works in removing the dropdown for authors/artists
// if (props.postType === 'contributor'){
// return null
// }
if( props.posts ) {
options.push( { value: 0, label: __( 'Select an artist', 'blocks' ) } );
props.posts.forEach((post) => {
options.push({value:post.id, label:post.title.rendered});
});
} else {
options.push( { value: 0, label: __( 'Loading artists...', 'blocks' ) } )
}
return el( SelectControl,
{
label: __( 'Art Credit:', 'blocks' ),
options : options,
onChange: ( content ) => {
props.setMetaValue( content );
},
value: props.metaValue,
}
);
}
);
return (
el( 'div', { }, [
el( OriginalComponent, props ),
el( artistSelect )
] )
);
}
}
wp.hooks.addFilter( 'editor.PostFeaturedImage', 'blocks/featured-image-artist', setFeaturedImageArtist );
以下是过滤器触发的编辑部分：
function setFeaturedImageArtist( OriginalComponent ) {
return ( props ) => {
const artistSelect = compose.compose(
...
)( function( props ) {
... // Cancelling out here works, but resources are loaded by this point.
});
return (
el( 'div', { }, [
el( OriginalComponent, props ),
el( artistSelect )
])
);
}
}
wp.hooks.addFilter( 'editor.PostFeaturedImage', 'blocks/featured-image-artist', setFeaturedImageArtist );
Element type is invalid: expected a string (for built-in components) or
a class/function (for composite components) but got: undefined.
我不确定最好的方法是什么，并且该文档很少/几乎不适用。是否可以创建模仿editor.PostFeaturedImage但仅在某些自定义帖子类型上触发的自定义挂钩？还是有某种方法可以在包装器中调用setFeaturedImageArtist之类的函数来检查帖子类型？
答案 0 :(得分：1)
我试图重新创建脚本并修复了一些问题：
const { createElement: el } = wp.element;
const { compose } = wp.compose;
const { withSelect, withDispatch } = wp.data;
const { SelectControl } = wp.components;
const { __ } = wp.i18n;
const ArtistSelect = compose(
withDispatch(function(dispatch, props) {
return {
setMetaValue: function(metaValue) {
dispatch("core/editor").editPost({
meta: { "featured-image-artist": metaValue }
});
}
};
}),
withSelect(function(select, props) {
let query = {
per_page: 20,
metaKey: "_author_type",
metaValue: "artist"
};
return {
postType: select("core/editor").getCurrentPostType(),
posts: select("core").getEntityRecords("postType", "contributor", query),
metaValue: select("core/editor").getEditedPostAttribute("meta")[
"featured-image-artist"
]
};
})
)(function(props) {
var options = [];
// This works in removing the dropdown for authors/artists
if (props.postType === "contributor") {
return null;
}
if (props.posts) {
options.push({ value: 0, label: __("Select an artist", "blocks") });
props.posts.forEach(post => {
options.push({ value: post.id, label: post.title.rendered });
});
} else {
options.push({ value: 0, label: __("Loading artists...", "blocks") });
}
return el(SelectControl, {
label: __("Art Credit:", "blocks"),
options: options,
onChange: content => {
props.setMetaValue(content);
},
value: props.metaValue
});
});
function setFeaturedImageArtist(OriginalComponent) {
return props => {
return el("div", {}, [el(OriginalComponent, props), el(ArtistSelect)]);
};
}
wp.hooks.addFilter(
"editor.PostFeaturedImage",
"blocks/featured-image-artist",
setFeaturedImageArtist
);
ArtistSelect是一个组件，因此我们将其放在setFeaturedImageArtist函数之外。 withSelect检查了postType，使其返回null。取而代之的是，我们传递该变量，然后在组件render中返回null。一种替代方法是在setFeaturedImageArtist内部进行检查。这是使用JSX的固定版本。希望清楚：
const { compose } = wp.compose;
const { withSelect, withDispatch, select } = wp.data;
const { SelectControl } = wp.components;
const { __ } = wp.i18n;
const { addFilter } = wp.hooks;
const ArtistSelect = compose(
withDispatch(dispatch => {
return {
setMetaValue: metaValue => {
dispatch("core/editor").editPost({
meta: { "featured-image-artist": metaValue }
});
}
};
}),
withSelect(select => {
const query = {
per_page: 20,
metaKey: "_author_type",
metaValue: "artist"
};
return {
posts: select("core").getEntityRecords("postType", "contributor", query),
metaValue: select("core/editor").getEditedPostAttribute("meta")[
"featured-image-artist"
]
};
})
)(props => {
const { posts, setMetaValue, metaValue } = props;
const options = [];
if (posts) {
options.push({ value: 0, label: __("Select an artist", "blocks") });
posts.forEach(post => {
options.push({ value: post.id, label: post.title.rendered });
});
} else {
options.push({ value: 0, label: __("Loading artists...", "blocks") });
}
return (
<SelectControl
label={__("Art Credit:", "blocks")}
options={options}
onChange={content => setMetaValue(content)}
value={metaValue}
/>
);
});
const setFeaturedImageArtist = OriginalComponent => {
return props => {
const post_type = select("core/editor").getCurrentPostType();
if (post_type === "contributor") {
return <OriginalComponent {...props} />;
}
return (
<div>
<OriginalComponent {...props} />
<ArtistSelect />
</div>
);
};
};
wp.hooks.addFilter(
"editor.PostFeaturedImage",
"blocks/featured-image-artist",
setFeaturedImageArtist
);