Enhance the xkey tags set on documentation pages

* For 'current' docs, *also* set the xkey pgdocs_current. Otherwise when
  a new major release is turned into current, the loader purge wouldn't
  be able to replace it, only replace the devel version.
* Set the pgdocs_<version> key on the release notes pages under
  /release/ (this is what triggered me to look at this)
* Set the pgdocs_all key for index pages such as /docs/ and /docs/release/. This
  will be purged every time, making sure we have an up-to-date list of
  versions.
* Set the key pgdocs_pdf for any pages that have PDF file information in
  them, so we can purge the list when new PDFs are uploaded.

1 files changed, 17 insertions, 3 deletions

diff --git a/pgweb/docs/views.py b/pgweb/docs/views.py
index 54393f74..c2d00c89 100644
--- a/pgweb/docs/views.py
+++ b/pgweb/docs/views.py
@@ -137,6 +137,8 @@ def docpage(request, version, filename):
         }
     })
     r['xkey'] = 'pgdocs_{}'.format(page.display_version())
+    if version == 'current':
+        r['xkey'] += ' pgdocs_current'
     return r
 
 
@@ -158,6 +160,8 @@ def docsvg(request, version, filename):
 
     r = HttpResponse(page.content, content_type="image/svg+xml")
     r['xkey'] = 'pgdocs_{}'.format(page.display_version())
+    if version == 'current':
+        r['xkey'] += ' pgdocs_current'
     return r
 
 
@@ -181,9 +185,11 @@ def redirect_root(request, version):
 
 def root(request):
     versions = Version.objects.filter(Q(supported=True) | Q(testing__gt=0, tree__gt=0)).order_by('-tree')
-    return render_pgweb(request, 'docs', 'docs/index.html', {
+    r = render_pgweb(request, 'docs', 'docs/index.html', {
         'versions': [_VersionPdfWrapper(v) for v in versions],
     })
+    r['xkey'] = 'pgdocs_all pgdocs_pdf'
+    return r
 
 
 class _VersionPdfWrapper(object):
@@ -222,9 +228,11 @@ def manuals(request):
 
 def manualarchive(request):
     versions = Version.objects.filter(testing=0, supported=False, tree__gt=0).order_by('-tree')
-    return render_pgweb(request, 'docs', 'docs/archive.html', {
+    r = render_pgweb(request, 'docs', 'docs/archive.html', {
         'versions': [_VersionPdfWrapper(v) for v in versions],
     })
+    r['xkey'] = 'pgdocs_all pgdocs_pdf'
+    return r
 
 
 def release_notes(request, major_version=None, minor_version=None):
@@ -336,7 +344,13 @@ def release_notes(request, major_version=None, minor_version=None):
         }
     else:
         context = {'release_notes': release_notes}
-    return render_pgweb(request, 'docs', 'docs/release_notes.html', context)
+
+    r = render_pgweb(request, 'docs', 'docs/release_notes.html', context)
+    if major_version:
+        r['xkey'] = 'pgdocs_{}'.format(major_version)
+    else:
+        r['xkey'] = 'pgdocs_all'
+    return r
 
 
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