Class: AppMap::Handler::Rails::Template::ResolverHandler

Inherits:
FunctionHandler show all
Defined in:
lib/appmap/handler/rails/template.rb

Overview

Hooks the ActionView::Resolver methods find_all, find_all_anywhere. The resolver is used during template rendering to lookup the template file path from parameters such as the template name, prefix, and partial (boolean).

Constant Summary

Constants inherited from AppMap::Hook::Method

AppMap::Hook::Method::HOOK_DISABLE_KEY

Constants included from AppMap::Hook::RecordAround

AppMap::Hook::RecordAround::APPMAP_OUTPUT_DIR

Instance Attribute Summary

Attributes inherited from AppMap::Hook::Method

#arity, #hook_class, #hook_method, #hook_package, #parameters, #record_around

Instance Method Summary collapse

Methods inherited from AppMap::Hook::Method

#activate, #call, #initialize

Methods included from AppMap::Hook::RecordAround

#record_around?, #record_around_after, #record_around_before

Constructor Details

This class inherits a constructor from AppMap::Hook::Method

Instance Method Details

#handle_call(receiver, args) ⇒ Object 



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# File 'lib/appmap/handler/rails/template.rb', line 114

def handle_call(receiver, args)
  name, prefix, partial = args
  warn "Resolver: #{{ name: name, prefix: prefix, partial: partial }}" if LOG

  super
end

#handle_return(call_event_id, elapsed, return_value, exception) ⇒ Object

When the resolver returns, look to see if there is template rendering underway. If so, populate the template path. In all cases, add a TemplateMethod so that the template will be recorded in the classMap.



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# File 'lib/appmap/handler/rails/template.rb', line 124

def handle_return(call_event_id, elapsed, return_value, exception)
  renderer = Array(Thread.current[TEMPLATE_RENDERER]).last
  path_obj = Array(return_value).first

  warn "Resolver return: #{path_obj}" if LOG

  record_template_path renderer, path_obj

  super
end

#path_from_obj(path_obj) ⇒ Object 



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# File 'lib/appmap/handler/rails/template.rb', line 143

def path_from_obj(path_obj)
  path =
    if path_obj.respond_to?(:identifier) && path_obj.inspect.index('#<')
      path_obj.identifier
    else
      path_obj.inspect
    end
  path = path[Dir.pwd.length + 1..-1] if path.index(Dir.pwd) == 0
  path
end

#record_template_path(renderer, path_obj) ⇒ Object 



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# File 'lib/appmap/handler/rails/template.rb', line 135

def record_template_path(renderer, path_obj)
  return unless path_obj

  path = path_from_obj path_obj
  AppMap.tracing.record_method(TemplateMethod.new(path))
  renderer.path ||= path if renderer
end