From d445ceb9b51ce87a306f331c643808312bd740e5 Mon Sep 17 00:00:00 2001 From: John Hawthorn Date: Thu, 14 Mar 2019 11:33:28 -0700 Subject: Make Template::Resolver always cache All actionview caches are already cleared at the start of each request (when Resolver.caching is false) by PerExecutionDigestCacheExpiry, which calls LookupContext::DetailsKey.clear (which clears all caches). Because caches are always cleared per-request in dev, we shouldn't need this extra logic to compare mtimes and conditionally reload templates. This should make templates slightly faster in development (particularly multiple renders of the same template) --- actionview/lib/action_view/template/resolver.rb | 32 +--------------- actionview/test/template/digestor_test.rb | 2 + actionview/test/template/lookup_context_test.rb | 50 ------------------------- 3 files changed, 4 insertions(+), 80 deletions(-) (limited to 'actionview') diff --git a/actionview/lib/action_view/template/resolver.rb b/actionview/lib/action_view/template/resolver.rb index 1dc9c9919a..eeb7cce61e 100644 --- a/actionview/lib/action_view/template/resolver.rb +++ b/actionview/lib/action_view/template/resolver.rb @@ -63,26 +63,11 @@ module ActionView # Cache the templates returned by the block def cache(key, name, prefix, partial, locals) - if Resolver.caching? - @data[key][name][prefix][partial][locals] ||= canonical_no_templates(yield) - else - fresh_templates = yield - cached_templates = @data[key][name][prefix][partial][locals] - - if templates_have_changed?(cached_templates, fresh_templates) - @data[key][name][prefix][partial][locals] = canonical_no_templates(fresh_templates) - else - cached_templates || NO_TEMPLATES - end - end + @data[key][name][prefix][partial][locals] ||= canonical_no_templates(yield) end def cache_query(query) # :nodoc: - if Resolver.caching? - @query_cache[query] ||= canonical_no_templates(yield) - else - yield - end + @query_cache[query] ||= canonical_no_templates(yield) end def clear @@ -112,19 +97,6 @@ module ActionView def canonical_no_templates(templates) templates.empty? ? NO_TEMPLATES : templates end - - def templates_have_changed?(cached_templates, fresh_templates) - # if either the old or new template list is empty, we don't need to (and can't) - # compare modification times, and instead just check whether the lists are different - if cached_templates.blank? || fresh_templates.blank? - return fresh_templates.blank? != cached_templates.blank? - end - - cached_templates_max_updated_at = cached_templates.map(&:updated_at).max - - # if a template has changed, it will be now be newer than all the cached templates - fresh_templates.any? { |t| t.updated_at > cached_templates_max_updated_at } - end end cattr_accessor :caching, default: true diff --git a/actionview/test/template/digestor_test.rb b/actionview/test/template/digestor_test.rb index 7affd3c005..4515afdfff 100644 --- a/actionview/test/template/digestor_test.rb +++ b/actionview/test/template/digestor_test.rb @@ -326,12 +326,14 @@ class TemplateDigestorTest < ActionView::TestCase def assert_digest_difference(template_name, options = {}) previous_digest = digest(template_name, options) + finder.view_paths.each(&:clear_cache) finder.digest_cache.clear yield assert_not_equal previous_digest, digest(template_name, options), "digest didn't change" finder.digest_cache.clear + finder.view_paths.each(&:clear_cache) end def digest(template_name, options = {}) diff --git a/actionview/test/template/lookup_context_test.rb b/actionview/test/template/lookup_context_test.rb index 62935620e9..537f8ee163 100644 --- a/actionview/test/template/lookup_context_test.rb +++ b/actionview/test/template/lookup_context_test.rb @@ -235,56 +235,6 @@ class LookupContextTest < ActiveSupport::TestCase end end -class LookupContextWithFalseCaching < ActiveSupport::TestCase - def setup - @resolver = ActionView::FixtureResolver.new("test/_foo.erb" => ["Foo", Time.utc(2000)]) - @lookup_context = ActionView::LookupContext.new(@resolver, {}) - end - - test "templates are always found in the resolver but timestamp is checked before being compiled" do - ActionView::Resolver.stub(:caching?, false) do - template = @lookup_context.find("foo", %w(test), true) - assert_equal "Foo", template.source - - # Now we are going to change the template, but it won't change the returned template - # since the timestamp is the same. - @resolver.data["test/_foo.erb"][0] = "Bar" - template = @lookup_context.find("foo", %w(test), true) - assert_equal "Foo", template.source - - # Now update the timestamp. - @resolver.data["test/_foo.erb"][1] = Time.now.utc - template = @lookup_context.find("foo", %w(test), true) - assert_equal "Bar", template.source - end - end - - test "if no template was found in the second lookup, with no cache, raise error" do - ActionView::Resolver.stub(:caching?, false) do - template = @lookup_context.find("foo", %w(test), true) - assert_equal "Foo", template.source - - @resolver.data.clear - assert_raise ActionView::MissingTemplate do - @lookup_context.find("foo", %w(test), true) - end - end - end - - test "if no template was cached in the first lookup, retrieval should work in the second call" do - ActionView::Resolver.stub(:caching?, false) do - @resolver.data.clear - assert_raise ActionView::MissingTemplate do - @lookup_context.find("foo", %w(test), true) - end - - @resolver.data["test/_foo.erb"] = ["Foo", Time.utc(2000)] - template = @lookup_context.find("foo", %w(test), true) - assert_equal "Foo", template.source - end - end -end - class TestMissingTemplate < ActiveSupport::TestCase def setup @lookup_context = ActionView::LookupContext.new("/Path/to/views", {}) -- cgit v1.2.3