CTC-2289 add resolver section to RT docs

js/structure-in-rte/structure_in_rte_use_standalone_resolver.jsx

@@ -0,0 +1,84 @@
+import React from "react";
+import { PortableText, toPlainText } from "@portabletext/react";
+import { nodeParse, transformToPortableText } from "@kontent-ai/rich-text-resolver"
+import { resolveImage, resolveTable, toHTMLImageDefault } from "@kontent-ai/rich-text-resolver/utils/html";
+
+const richTextElement = {/* rich text element from SDK response */}
+
+/**
+ * object, defining resolution for various portable text objects.
+ * to be passed into <PortableText> component.
+ */
+const portableTextComponents = {
+    types: {
+      // resolution for component custom block, representing linked items/components in rich text content
+      component: ({ value }) => {
+        const item = richTextElement.linkedItems.find(item => item.system.codename === value.component._ref);
+        return <div>{item?.elements.text_element.value}</div>;
+      },
+      // resolution for tables in rich text.
+      // makes use of resolveTable helper method included in the package.
+      table: ({ value }) => {
+        const tableString = resolveTable(value, toPlainText);
+        return <>{tableString}</>;
+      },
+      // resolution for assets in rich text.
+      // makes use of resolveImage helper method included in the package.
+      image: ({ value }) => {
+        const imageString = resolveImage(value, toHTMLImageDefault);
+        return <>{imageString}</>;
+      }
+    },
+    marks: {
+      // resolution for links to external URLs
+      link: ({ value, children }) => {
+        const target = (value?.href || '').startsWith('http') ? '_blank' : undefined
+        return (
+          <a href={value?.href} target={target} rel={value?.rel} title={value?.title} data-new-window={value?.['data-new-window']}>
+            {children}
+          </a>
+        )
+      },
+      // resolution for links to content items
+      internalLink: ({ value, children }) => {
+        const item = richTextElement.linkedItems.find(item => item.system.id === value?.reference._ref);
+        return (
+          <a href={"https://website.xyz/" + item?.system.codename}>
+            {children}
+          </a>
+        )
+      }
+    },
+    block: {
+      /**
+       * custom resolution for h1 tag. this specific example showcases anchor creation.
+       * 
+       * createAnchorString can return e.g. a sanitized, url-friendly text content
+       * of the heading or any other string representing the anchor.
+       * 
+       * all default tags/blocks can be overridden in this manner.
+       */
+      h1: ({ value, children }) => (
+        <h1 id={createAnchorString(value)}>
+          <a href={`#${createAnchorString(value)}`}>{children}</a>
+        </h1>
+      ),
+    },
+  }
+
+  // custom component rendering the resolved rich text
+  const MyComponent = ({ props }) => {
+    // https://github.com/portabletext/react-portabletext#customizing-components
+
+    const parsedTree = nodeParse(props.element.value); // or browserParse, converts HTML to JSON tree
+    const portableText = transformToPortableText(parsedTree); // converts JSON tree to portable text
+
+    return (
+      /**
+       * component from @portabletext/react package.
+       * accepts an array of portable text blocks and the `components` object which
+       * defines resolution for individual portable text entities.
+       */
+      <PortableText value={portableText} components={portableTextComponents} />
+    );
+  };

ts/structure-in-rte/structure_in_rte_use_standalone_resolver.tsx

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+import React from "react";
+import { PortableText, PortableTextComponentProps, PortableTextMarkComponentProps, PortableTextReactComponents, PortableTextTypeComponentProps, toPlainText } from "@portabletext/react";
+import { nodeParse, transformToPortableText } from "@kontent-ai/rich-text-resolver"
+import { resolveImage, resolveTable, toHTMLImageDefault } from "@kontent-ai/rich-text-resolver/utils/html";
+import { PortableTextComponent, PortableTextTable, PortableTextImage, PortableTextExternalLink, PortableTextInternalLink, PortableTextBlock } from "@kontent-ai/rich-text-resolver/types/transformer"
+import { Elements } from "@kontent-ai/delivery-sdk"
+
+const richTextElement: Elements.RichTextElement = {/* rich text element from SDK response */}
+
+/**
+ * object, defining resolution for various portable text objects.
+ * to be passed into <PortableText> component.
+ */
+const portableTextComponents: Partial<PortableTextReactComponents> = {
+    types: {
+      // resolution for component custom block, representing linked items/components in rich text content
+      component: ({ value }: PortableTextTypeComponentProps<PortableTextComponent>) => {
+        const item = richTextElement.linkedItems.find(item => item.system.codename === value.component._ref);
+        return <div>{item?.elements.text_element.value}</div>;
+      },
+      // resolution for tables in rich text.
+      // makes use of resolveTable helper method included in the package.
+      table: ({ value }: PortableTextTypeComponentProps<PortableTextTable>) => {
+        const tableString = resolveTable(value, toPlainText);
+        return <>{tableString}</>;
+      },
+      // resolution for assets in rich text.
+      // makes use of resolveImage helper method included in the package.
+      image: ({ value }: PortableTextTypeComponentProps<PortableTextImage>) => {
+        const imageString = resolveImage(value, toHTMLImageDefault);
+        return <>{imageString}</>;
+      }
+    },
+    marks: {
+      // resolution for links to external URLs
+      link: ({ value, children }: PortableTextMarkComponentProps<PortableTextExternalLink>) => {
+        const target = (value?.href || '').startsWith('http') ? '_blank' : undefined
+        return (
+          <a href={value?.href} target={target} rel={value?.rel} title={value?.title} data-new-window={value?.['data-new-window']}>
+            {children}
+          </a>
+        )
+      },
+      // resolution for links to content items
+      internalLink: ({ value, children }: PortableTextMarkComponentProps<PortableTextInternalLink>) => {
+        const item = richTextElement.linkedItems.find(item => item.system.id === value?.reference._ref);
+        return (
+          <a href={"https://website.xyz/" + item?.system.codename}>
+            {children}
+          </a>
+        )
+      }
+    },
+    block: {
+      /**
+       * custom resolution for h1 tag. this specific example showcases anchor creation.
+       * 
+       * createAnchorString can return e.g. a sanitized, url-friendly text content
+       * of the heading or any other string representing the anchor.
+       * 
+       * all default tags/blocks can be overridden in this manner.
+       */
+      h1: ({ value, children }: PortableTextComponentProps<PortableTextBlock>) => (
+        <h1 id={createAnchorString(value)}>
+          <a href={`#${createAnchorString(value)}`}>{children}</a>
+        </h1>
+      ),
+    },
+  }
+
+  // custom component rendering the resolved rich text
+  const MyComponent = ({ props }) => {
+    // https://github.com/portabletext/react-portabletext#customizing-components
+
+    const parsedTree = nodeParse(props.element.value); // or browserParse, converts HTML to JSON tree
+    const portableText = transformToPortableText(parsedTree); // converts JSON tree to portable text
+
+    return (
+      /**
+       * component from @portabletext/react package.
+       * accepts an array of portable text blocks and the `components` object which
+       * defines resolution for individual portable text entities.
+       */
+      <PortableText value={portableText} components={portableTextComponents} />
+    );
+  };