Function currentProductTree

middleware/contextualizers/current-product-tree.js:8–45

(req, res, next)

// This module adds currentProductTree to the context object for use in layouts.
export default async function currentProductTree(req, res, next) {
  if (!req.context.page) return next()
  if (req.context.page.documentType === 'homepage') return next()

  // We need this so we can fall back to English if localized pages are out of sync.
  req.context.currentEnglishTree = req.context.siteTree.en[req.context.currentVersion]

  const currentRootTree =
    req.context.siteTree[req.context.currentLanguage][req.context.currentVersion]
  const currentProductPath = removeFPTFromPath(
    path.posix.join(
      '/',
      req.context.currentLanguage,
      req.context.currentVersion,
      req.context.currentProduct
    )
  )
  req.context.currentProductTree = findPageInSiteTree(
    currentRootTree,
    req.context.currentEnglishTree,
    currentProductPath
  )

  // First make a slim tree of just the 'href', 'title', 'shortTitle'
  // 'documentType' and 'childPages' (which is recursive).
  // This gets used for map topic and category pages.
  req.context.currentProductTreeTitles = await getCurrentProductTreeTitles(
    req.context.currentProductTree,
    req.context
  )
  // Now make an even slimmer version that excludes all hidden pages.
  // This is i used for sidebars.
  req.context.currentProductTreeTitlesExcludeHidden = excludeHidden(
    req.context.currentProductTreeTitles
  )

  return next()
}

// Return a nested object that contains the bits and pieces we need
// for the tree which is used for sidebars and listing