Search API: Paragraph IDs and Cross-Domain Search Issues

Problem/Motivation

When using Paragraphs, Domain, and Search API together, a search view is configured to query nodes across all domains, displaying them even if the current domain does not match. This works correctly for displaying results.

However, two issues arise:

• When performing a search that uses an excerpt, everything functions correctly except when a node does not belong to the current domain. In this case, paragraphs are displayed as IDs (e.g.,123..124..125..126) instead of their text or formatted content.
• If a search query includes a term that exists in a paragraph attached to a node from another domain, the result is not returned at all. This prevents the search from functioning across all domains as expected.

Steps to reproduce

• Install and configure the Paragraphs, Domain, and Search API modules.
  • Ensure that Domain is set up to manage content visibility across multiple domains.
  • Configure Paragraphs to be used as fields in nodes.
  • Set up Search API to index nodes and their paragraph content.
• Create nodes with paragraph fields.
  • Assign some nodes to different domains using the Domain module.
  • Populate the paragraph fields with text content for testing.
• Configure a Search API view:
  • Ensure the view is set up to query all indexed nodes, regardless of their domain.
  • Add an excerpt field to display search context in the results.
• Perform the following searches from a specific domain:
  • Search for a term that matches the content of a paragraph in a node from a different domain.
  • Observe whether the node appears in the search results.
  • Check the excerpt field for nodes from other domains: other fields display correctly, but paragraph fields are shown as IDs.

Proposed resolution

• Modify the Search API integration to ensure that paragraphs render their content in the excerpt field, even when the node belongs to a different domain.
• Adjust the indexing or querying logic to ensure that paragraph content is indexed and searchable across domains.
• Extend normalization plugins to better handle paragraphs in the search context.
• Document the required configuration or implement an option to handle these edge cases effectively.

Remaining tasks