Class: ViewComponent::CacheDigest::Resolver

Inherits:
ActionView::Resolver
  • Object
show all
Defined in:
lib/view_component/cache_digest/resolver.rb

Overview

Synthesizes the templates Rails' ActionView::Digestor digests components from.

Once DependencyTracking reports view_component/cache_digest/foo_component as a dependency, the Digestor tries to find a template at that path. No such file exists: a component's rendered output depends on its template and its Ruby class, its sidecar files, and its superclasses.

This resolver answers with a synthetic template whose source encodes all of those inputs. The template is never compiled or rendered; the Digestor only reads #source to hash it and to scan it for further dependencies.

Constant Summary collapse

SIDECAR_EXTENSIONS =

Extensions whose contents are hashed into the synthetic source.

%w[yml yaml].freeze

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.instance ⇒ Object 



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# File 'lib/view_component/cache_digest/resolver.rb', line 22

def instance
  INSTANCE
end

Instance Method Details

#eql?(other) ⇒ Boolean Also known as: ==

Returns:

  • (Boolean) 


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# File 'lib/view_component/cache_digest/resolver.rb', line 45

def eql?(other)
  self.class.equal?(other.class)
end

#find_templates(name, prefix, partial, details, locals = []) ⇒ Object 



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# File 'lib/view_component/cache_digest/resolver.rb', line 27

def find_templates(name, prefix, partial, details, locals = [])
  virtual_path = [prefix.presence, name].compact.join("/")
  component = CacheDigest.component_for(virtual_path)
  return [] unless component

  [build_template(component, virtual_path, details)]
rescue
  # Never let digest resolution break rendering. Returning no template
  # makes the Digestor treat this as a missing node, which degrades to
  # the behavior components have without this feature.
  []
end

#to_s ⇒ Object Also known as: to_path 



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# File 'lib/view_component/cache_digest/resolver.rb', line 40

def to_s
  "ViewComponent::CacheDigest::Resolver"
end