Class: Pluto::Model::Feed

Inherits:
ActiveRecord::Base
  • Object
show all
Includes:
TextUtils::HypertextHelper
Defined in:
lib/pluto/models/feed.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.latest ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 20

def self.latest
  # note: order by first non-null datetime field
  #   coalesce - supported by sqlite (yes), postgres (yes)

  # note: if not updated or published use hardcoded 1971-01-01 for now
  ## order( "coalesce(updated,published,'1971-01-01') desc" )
  order( "coalesce(feeds.items_last_updated,'1971-01-01') desc" )
end

Instance Method Details

#author_email ⇒ Object

alias(2) for email



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# File 'lib/pluto/models/feed.rb', line 44

def author_email() email;   end

#author_name ⇒ Object

alias for author



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# File 'lib/pluto/models/feed.rb', line 41

def author_name()  author;  end

#debug=(value) ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 75

def debug=(value)  @debug = value;   end

#debug? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 76

def debug?()       @debug || false;  end

#deep_update_from_struct!(data) ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 79

def deep_update_from_struct!( data )

  ######
  ## check for filters (includes/excludes) if present
  ##  for now just check for includes
  ##
  if includes.present?
    includesFilter = FeedFilter::IncludeFilters.new( includes )
  else
    includesFilter = nil
  end

  data.items.each do |item|
    if includesFilter && includesFilter.match_item?( item ) == false
      puts "** SKIPPING | #{item.title}"
      puts "  no include terms match: #{includes}"
      next   ## skip to next item
    end

    item_rec = Item.find_by_guid( item.guid )
    if item_rec.nil?
      item_rec  = Item.new
      puts "** NEW | #{item.title}"
    else
      ## todo: check if any attribs changed
      puts "UPDATE | #{item.title}"
    end

    item_rec.debug = debug? ? true : false  # pass along debug flag

    item_rec.feed_id = id        # feed_rec.id - add feed_id fk_ref
    item_rec.fetched = fetched   # feed_rec.fetched

    item_rec.update_from_struct!( item )

  end  # each item


  #  update  cached value last published for item
  ##  todo/check: force reload of items - why? why not??
  last_item_rec = items.latest.limit(1).first  # note limit(1) will return relation/arrar - use first to get first element or nil from ary
  if last_item_rec.present?
    if last_item_rec.updated?
      self.items_last_updated = last_item_rec.updated
      ## save!  ## note: will get save w/ update_from_struct!  - why? why not??
    else # try published
      self.items_last_updated = last_item_rec.published
      ## save!  ## note: will get save w/ update_from_struct!  - why? why not??
    end
  end

  update_from_struct!( data )
end

#desc ⇒ Object

alias(2) for summary



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# File 'lib/pluto/models/feed.rb', line 36

def desc()        summary;  end

#description ⇒ Object

alias for summary



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# File 'lib/pluto/models/feed.rb', line 35

def description() summary;  end

#feed ⇒ Object

alias for feed_url



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# File 'lib/pluto/models/feed.rb', line 39

def feed()        feed_url; end

#feed_url ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 54

def feed_url() read_attribute_w_fallbacks( :feed_url, :auto_feed_url ); end

#feed_url? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 50

def feed_url?()      read_attribute(:feed_url).present?;  end

#link ⇒ Object

alias for url



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# File 'lib/pluto/models/feed.rb', line 38

def link()        url;      end

#name ⇒ Object

attribute reader aliases

todo: check if we can use alias_method :name, :title   - works for non-existing/on-demand-generated method too??



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# File 'lib/pluto/models/feed.rb', line 34

def name()        title;    end

#owner ⇒ Object

alias(3) for author



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# File 'lib/pluto/models/feed.rb', line 43

def owner()        author;  end

#owner_name ⇒ Object

alias(2) for author



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# File 'lib/pluto/models/feed.rb', line 42

def owner_name()   author;  end

#published ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 68

def published
  ## todo/fix: use a new name - do NOT squeeze convenience lookup into existing
  #    db backed attribute
  read_attribute_w_fallbacks( :published, :updated )
end

#published? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 60

def published?()  read_attribute(:published).present?;  end

#subtitle ⇒ Object

alias(3) for summary



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# File 'lib/pluto/models/feed.rb', line 37

def subtitle()    summary;  end

#summary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 56

def summary?()      read_attribute(:summary).present?;  end

#title ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 53

def title()    read_attribute_w_fallbacks( :title,    :auto_title );    end

#title? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 49

def title?()         read_attribute(:title).present?;     end

#update_from_struct!(data) ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 134

def update_from_struct!( data )

##
# todo:
##  strip all tags from summary (subtitle)
##  limit to 255 chars
## e.g. summary (subtitle) such as this exist
##  This is a low-traffic announce-only list for people interested
##  in hearing news about Polymer (<a href="http://polymer-project.org">http://polymer-project.org</a>).
## The higher-traffic mailing list for all kinds of discussion is
##  <a href="https://groups.google.com/group/polymer-dev">https://groups.google.com/group/polymer-dev</a>

  feed_attribs = {
      format:       data.format,
      updated:      data.updated,
      published:    data.published,
      summary:      data.summary,
      generator:    data.generator.to_s,    ## note: use single-line/string generator stringified -- might return null (if no data)
      ### todo/fix: add/use
      # auto_title:     ???,
      # auto_url:       ???,
      # auto_feed_url:  ???,
    }

  if debug?
      ## puts "*** dump feed_attribs:"
      ## pp feed_attribs
      puts "*** dump feed_attribs w/ class types:"
      feed_attribs.each do |key,value|
        puts "  #{key}: >#{value}< : #{value.class.name}"
      end
  end

  update_attributes!( feed_attribs )
end

#updated ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 62

def updated
  ## todo/fix: use a new name - do NOT squeeze convenience lookup into existing
  #    db backed attribute
  read_attribute_w_fallbacks( :updated, :published )
end

#updated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 59

def updated?()    read_attribute(:updated).present?;    end

#url ⇒ Object 



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# File 'lib/pluto/models/feed.rb', line 52

def url()      read_attribute_w_fallbacks( :url,      :auto_url );      end

#url? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pluto/models/feed.rb', line 48

def url?()           read_attribute(:url).present?;       end