make jekyll-strapi plugin work with strapi-v4

lib/jekyll/strapi/collection.rb

@@ -34,14 +34,14 @@ def each
         end
 
         # Add necessary properties
-        result.each do |document|
+        result.data.each do |document|
           document.type = collection_name
           document.collection = collection_name
           document.id ||= document._id
           document.url = @site.strapi_link_resolver(collection_name, document)
         end
 
-        result.each {|x| yield(x)}
+        result.data.each {|x| yield(x)}
       end
     end
   end

lib/jekyll/strapi/generator.rb

@@ -38,7 +38,7 @@ def initialize(site, base, document, collection)
       end
 
       def url_placeholders
-        requiredValues = @document.to_h.select {|k, v|
+        requiredValues = @document.attributes.to_h.select {|k, v|
           v.class == String and @collection.config['permalink'].include? k.to_s
         }
 

lib/jekyll/strapi/site.rb

@@ -30,8 +30,12 @@ def strapi_link_resolver(collection = nil, document = nil)
         :placeholders => {
           :id => document.id.to_s,
           :uid => document.uid,
-          :slug => document.slug,
-          :type => document.type
+          :slug => document.attributes.slug,
+          :type => document.type,
+          :date => document.attributes.date,
+          :title => document.attributes.title
+          # look inside jekyll _data folder
+          #:title => document.data,
         }
       )