Class: Jekyll::Drops::DocumentDrop

Inherits:
Drop
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/jekyll/drops/document_drop.rb

Direct Known Subclasses

ExcerptDrop

Constant Summary collapse

NESTED_OBJECT_FIELD_BLACKLIST = 
%w(
  content output excerpt next previous
).freeze

Constants inherited from Drop

Jekyll::Drops::Drop::NON_CONTENT_METHODS

Instance Method Summary collapse

Methods inherited from Drop

#[], #[]=, #content_methods, #each, #each_key, #fetch, #initialize, #inspect, #key?, #keys, #merge, #merge!, mutable, mutable?, #to_h, #to_json

Constructor Details

This class inherits a constructor from Jekyll::Drops::Drop

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/jekyll/drops/document_drop.rb', line 27

def <=>(other)
  return nil unless other.is_a? DocumentDrop
  cmp = self["date"] <=> other["date"]
  cmp = self["path"] <=> other["path"] if cmp.nil? || cmp.zero?
  cmp
end

#collapse_document(doc) ⇒ Object

Generate a Hash which breaks the recursive chain. Certain fields which are normally available are omitted.

Returns a Hash with only non-recursive fields present.



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# File 'lib/jekyll/drops/document_drop.rb', line 61

def collapse_document(doc)
  doc.keys.each_with_object({}) do |(key, _), result|
    result[key] = doc[key] unless NESTED_OBJECT_FIELD_BLACKLIST.include?(key)
  end
end

#collection ⇒ Object 



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# File 'lib/jekyll/drops/document_drop.rb', line 19

def collection
  @obj.collection.label
end

#excerpt ⇒ Object 



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# File 'lib/jekyll/drops/document_drop.rb', line 23

def excerpt
  fallback_data["excerpt"].to_s
end

#hash_for_json(state = nil) ⇒ Object

Generate a Hash for use in generating JSON. This is useful if fields need to be cleared before the JSON can generate.

state - the JSON::State object which determines the state of current processing.

Returns a Hash ready for JSON generation.



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# File 'lib/jekyll/drops/document_drop.rb', line 48

def hash_for_json(state = nil)
  to_h.tap do |hash|
    if state && state.depth >= 2
      hash["previous"] = collapse_document(hash["previous"]) if hash["previous"]
      hash["next"]     = collapse_document(hash["next"]) if hash["next"]
    end
  end
end

#next ⇒ Object 



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# File 'lib/jekyll/drops/document_drop.rb', line 38

def next
  @obj.next_doc.to_liquid
end

#previous ⇒ Object 



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# File 'lib/jekyll/drops/document_drop.rb', line 34

def previous
  @obj.previous_doc.to_liquid
end