Class: Caboose::RichTextBlockParser

Inherits:
Object
  • Object
show all
Defined in:
app/models/caboose/rich_text_block_parser.rb

Class Method Summary collapse

Class Method Details

.parse(block, html, domain) ⇒ Object 



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# File 'app/models/caboose/rich_text_block_parser.rb', line 5

def self.parse(block, html, domain)
  
  random_string = (0...10).map { ('a'..'z').to_a[rand(26)] }.join
  html = html.strip
  page = Nokogiri::HTML("<div class='#{random_string}'>#{html}</div>")
  if page.css('div').children.count == 1
    block.value = html
    block.save
    return block
  end
  
  nodes = []
  page.css("div.#{random_string}").children.each do |node|
    #Caboose.log(node.to_s)
    case node.name.downcase
      when 'h1'    then nodes << node           
      when 'h2'    then nodes << node
      when 'h3'    then nodes << node
      when 'h4'    then nodes << node
      when 'h5'    then nodes << node
      when 'h6'    then nodes << node
      when 'p'     then
        str = node.inner_html.strip
        nodes << node if str.length > 0 && str != "&#160;" && str != "&nbsp;"
      when 'ul'    then nodes << node
      when 'div'   then nodes << node
      when 'a'     then nodes << node
      when 'img'   then nodes << node
      when 'table' then nodes << node
    end                    
  end
  
  # Increment the sort order of any blocks after the current one                
  sort_order = block.sort_order + nodes.count                
  block.parent.children.where('sort_order > ?', block.sort_order).reorder(:sort_order).all.each do |b2|
    b2.sort_order = sort_order
    b2.save
    sort_order = sort_order + 1                  
  end
  
  # Now add all the new blocks
  sort_order = block.sort_order
  new_first_block_id = false
  paragraphs = []
  nodes.each do |node|
    b = Block.create(   
      :page_id       => block.page_id,              
      :parent_id     => block.parent_id,
      :sort_order    => sort_order
    )
    if sort_order == block.sort_order
      new_first_block_id = b.id
    end
    
    case node.name.downcase
      when 'h1'
        b.block_type_id = BlockType.where(:name => 'heading').first.id
        b.save            
        b.create_children            
        b.child('size').update_attribute(:value, 1)                        
        b.child('text').update_attribute(:value, node.inner_html)            
      when 'h2'
        b.block_type_id = BlockType.where(:name => 'heading').first.id
        b.save            
        b.create_children            
        b.child('size').update_attribute(:value, 2)                        
        b.child('text').update_attribute(:value, node.inner_html)
      when 'h3'
        b.block_type_id = BlockType.where(:name => 'heading').first.id
        b.save            
        b.create_children            
        b.child('size').update_attribute(:value, 3)                        
        b.child('text').update_attribute(:value, node.inner_html)
      when 'h4'
        b.block_type_id = BlockType.where(:name => 'heading').first.id
        b.save            
        b.create_children            
        b.child('size').update_attribute(:value, 4)                        
        b.child('text').update_attribute(:value, node.inner_html)
      when 'h5'
        b.block_type_id = BlockType.where(:name => 'heading').first.id
        b.save            
        b.create_children            
        b.child('size').update_attribute(:value, 5)                        
        b.child('text').update_attribute(:value, node.inner_html)
      when 'h6'
        b.block_type_id = BlockType.where(:name => 'heading').first.id
        b.save            
        b.create_children            
        b.child('size').update_attribute(:value, 6)                        
        b.child('text').update_attribute(:value, node.inner_html)
      when 'p'
        b.block_type_id = BlockType.where(:name => 'richtext').first.id
        b.value = node.to_s                        
        b.save
        paragraphs << b
      when 'ul'
        b.block_type_id = BlockType.where(:name => 'richtext').first.id
        b.value = node.to_s                        
        b.save
      when 'div'
        b.block_type_id = BlockType.where(:name => 'richtext').first.id
        b.value = node.to_s                        
        b.save
      when 'a'
        b.block_type_id = BlockType.where(:name => 'richtext').first.id
        b.value = "<p>#{node.to_s}</p>"                        
        b.save
      when 'img'
        b.block_type_id = BlockType.where(:name => 'richtext').first.id
        b.value = node.to_s                        
        b.save
      when 'table'
        b.block_type_id = BlockType.where(:name => 'richtext').first.id
        b.value = node.to_s                        
        b.save            
    end                    
    sort_order = sort_order + 1
  end
  
  paragraphs.each do |p|
    self.parse_paragraph(p, domain)
  end
  
  # Now delete the original block      
  block.destroy
  block = Block.find(new_first_block_id)
  return block

end

.parse_paragraph(block, domain) ⇒ Object 



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# File 'app/models/caboose/rich_text_block_parser.rb', line 136

def self.parse_paragraph(block, domain)
        
  page = Nokogiri::HTML(block.value)
  return if page.css('img').count == 0
  
  image_count = page.css('img').count
  sort_order = block.sort_order
  
  # Increment the sort order of any blocks after and including the current one      
  i = 0
  block.parent.children.where('sort_order >= ?', block.sort_order).reorder(:sort_order).all.each do |b2|
    b2.sort_order = sort_order + image_count + i
    b2.save
    i = i + 1                  
  end
  
  # Create blocks for each image
  i = 0
  image_block_type_id = BlockType.where("name = ? and parent_id is null", 'image').first.id
  page.css('img').each do |node|
    b = Block.create(          
      :page_id       => block.page_id,              
      :parent_id     => block.parent_id,
      :block_type_id => image_block_type_id,
      :sort_order    => sort_order + i
    )
    b.create_children
    
    # Set the alignment
    if node['align'] && node['align'].length > 0
      align = node['align']
      align[0] = align[0].capitalize
      b.child('align').update_attribute(:value, align)
    end
    
    # Download the image
    src = node['src']
    src = "http://#{domain}#{src}" if src.starts_with?('/')        
    img = b.child('image_src')
    img.image = URI.parse(src)
    img.save
    
    #b.child('image_style'   ).update_attribute(:value, )
    #b.child('link'          ).update_attribute(:value, )
    #b.child('width'         ).update_attribute(:value, )
    #b.child('height'        ).update_attribute(:value, )
    #b.child('margin_top'    ).update_attribute(:value, )
    #b.child('margin_bottom' ).update_attribute(:value, )
    #b.child('margin_right'  ).update_attribute(:value, )
    #b.child('margin_left'   ).update_attribute(:value, )
                 
    i = i + 1        
  end
  
  # Now remove any images from the paragraph
  page.search('.//img').remove
  block.value = page.to_s
  block.save
  
end