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Exception: ActionView::MissingTemplate

Do not use. This class is for internal use only.
Relationships & Source Files
Namespace Children
Classes:
Results
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ActionViewError, StandardError
Instance Chain:
self, DidYouMean::Correctable, ActionViewError, StandardError
Inherits: ActionView::ActionViewError
Defined in: actionview/lib/action_view/template/error.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

  • #corrections

    Apps may have thousands of candidate templates so we attempt to generate the suggestions as efficiently as possible.

Constructor Details

.new(paths, path, prefixes, partial, details) ⇒ MissingTemplate

[ GitHub ] 

  


# File 'actionview/lib/action_view/template/error.rb', line 33



def initialize(paths, path, prefixes, partial, details, *)
  if partial && path.present?
    path = path.sub(%r{([^/]+)$}, "_\\1")
  end

  @path = path
  @paths = paths
  @prefixes = Array(prefixes)
  @partial = partial
  template_type = if partial
    "partial"
  elsif /layouts/i.match?(path)
    "layout"
  else
    "template"
  end

  searched_paths = @prefixes.map { |prefix| [prefix, path].join("/") }

  out  = "Missing #{template_type} #{searched_paths.join(", ")} with #{details.inspect}.\n\nSearched in:\n"
  out += paths.compact.map { |p| "  * #{p.to_s.inspect}\n" }.join
  super out
end


  







Instance Attribute Details



  

    #partial   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/template/error.rb', line 31



attr_reader :path, :paths, :prefixes, :partial


  








  

    #path   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/template/error.rb', line 31



attr_reader :path, :paths, :prefixes, :partial


  








  

    #paths   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/template/error.rb', line 31



attr_reader :path, :paths, :prefixes, :partial


  








  

    #prefixes   (readonly)
  

  [ GitHub ]


  

  


# File 'actionview/lib/action_view/template/error.rb', line 31



attr_reader :path, :paths, :prefixes, :partial


  







Instance Method Details



  

    #corrections  
  



  

    

Apps may have thousands of candidate templates so we attempt to generate the suggestions as efficiently as possible. First we split templates into prefixes and basenames, so that those can be matched separately.


  



  [ GitHub ]


  

  


# File 'actionview/lib/action_view/template/error.rb', line 93



def corrections
  candidates = paths.flat_map(&:all_template_paths).uniq

  if partial
    candidates.select!(&:partial?)
  else
    candidates.reject!(&:partial?)
  end

  # Group by possible prefixes
  files_by_dir = candidates.group_by(&:prefix)
  files_by_dir.transform_values! do |files|
    files.map do |file|
      # Remove prefix
      File.basename(file.to_s)
    end
  end

  # No suggestions if there's an exact match, but wrong details
  if prefixes.any? { |prefix| files_by_dir[prefix]&.include?(path) }
    return []
  end

  cached_distance = Hash.new do |h, args|
    h[args] = -DidYouMean::Jaro.distance(*args)
  end

  results = Results.new(6)

  files_by_dir.keys.index_with do |dirname|
    prefixes.map do |prefix|
      cached_distance[[prefix, dirname]]
    end.min
  end.sort_by(&:last).each do |dirname, dirweight|
    # If our directory's score makes it impossible to find a better match
    # we can prune this search branch.
    next unless results.should_record?(dirweight - 1.0)

    files = files_by_dir[dirname]

    files.each do |file|
      fileweight = cached_distance[[path, file]]
      score = dirweight + fileweight

      results.add(File.join(dirname, file), score)
    end
  end

  if partial
    results.to_a.map { |res| res.sub(%r{_([^/]+)\z}, "\\1") }
  else
    results.to_a
  end
end