Remove FIELD_KEYWORDS, index project slugs as body content

Summary:
D17384 added a "keywords" field but only partially implemented it.

  - Remove this field.
  - Index project slugs as part of the document body instead.

Test Plan:
  - Ran `bin/search index PHID-PROJ-... --force`.
  - Found project by searching for a unique slug.

Reviewers: chad, 20after4

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D17596

src/applications/project/search/PhabricatorProjectFulltextEngine.php

@@ -8,17 +8,26 @@ final class PhabricatorProjectFulltextEngine
     $object) {
 
     $project = $object;
+    $viewer = $this->getViewer();
+
+    // Reload the project to get slugs.
+    $project = id(new PhabricatorProjectQuery())
+      ->withIDs(array($project->getID()))
+      ->setViewer($viewer)
+      ->needSlugs(true)
+      ->executeOne();
+
     $project->updateDatasourceTokens();
 
-    $document->setDocumentTitle($project->getDisplayName());
-    $document->addField(PhabricatorSearchDocumentFieldType::FIELD_KEYWORDS,
-      $project->getPrimarySlug());
-    try {
-      $slugs = $project->getSlugs();
-      foreach ($slugs as $slug) {}
-    } catch (PhabricatorDataNotAttachedException $e) {
-      // ignore
+    $slugs = array();
+    foreach ($project->getSlugs() as $slug) {
+      $slugs[] = $slug->getSlug();
     }
+    $body = implode("\n", $slugs);
+
+    $document
+      ->setDocumentTitle($project->getDisplayName())
+      ->addField(PhabricatorSearchDocumentFieldType::FIELD_BODY, $body);
 
     $document->addRelationship(
       $project->isArchived()

src/applications/search/constants/PhabricatorSearchDocumentFieldType.php

@@ -5,6 +5,5 @@ final class PhabricatorSearchDocumentFieldType extends Phobject {
   const FIELD_TITLE         = 'titl';
   const FIELD_BODY          = 'body';
   const FIELD_COMMENT       = 'cmnt';
-  const FIELD_KEYWORDS      = 'kwrd';
 
 }