NameError (uninitialized constant Twitter::TextExtractor): - ruby-on-rails-3

Question

I am getting error while using Twitter-text gem.
I am getting -> NameError (uninitialized constant Twitter::TextExtractor) while creating entry.
here is the right code below
class EntryParser
class << self
include Twitter::Extractor
# Default CSS class for auto-linked lists
DEFAULT_LIST_CLASS = "url link-list-slug".freeze
# Default CSS class for auto-linked usernames
DEFAULT_USERNAME_CLASS = "url link-username".freeze
# Default CSS class for auto-linked hashtags
DEFAULT_HASHTAG_CLASS = "url link-hashtag".freeze
# Default CSS class for auto-linked cashtags
DEFAULT_CASHTAG_CLASS = "url link-cashtag".freeze
# Default URL base for auto-linked usernames
DEFAULT_USERNAME_URL_BASE = "/users/".freeze
# Default URL base for auto-linked lists
DEFAULT_LIST_URL_BASE = "/users".freeze
# Default URL base for auto-linked hashtags
DEFAULT_HASHTAG_URL_BASE = "/tags/".freeze
# Default URL base for auto-linked cashtags
DEFAULT_CASHTAG_URL_BASE = "#!tag?q=%24".freeze
# Default attributes for invisible span tag
DEFAULT_INVISIBLE_TAG_ATTRS = "style='position:absolute;left:-9999px;'".freeze
DEFAULT_OPTIONS = {
:list_class => DEFAULT_LIST_CLASS,
:username_class => DEFAULT_USERNAME_CLASS,
:hashtag_class => DEFAULT_HASHTAG_CLASS,
:cashtag_class => DEFAULT_CASHTAG_CLASS,
:username_url_base => DEFAULT_USERNAME_URL_BASE,
:list_url_base => DEFAULT_LIST_URL_BASE,
:hashtag_url_base => DEFAULT_HASHTAG_URL_BASE,
:cashtag_url_base => DEFAULT_CASHTAG_URL_BASE,
:invisible_tag_attrs => DEFAULT_INVISIBLE_TAG_ATTRS
}.freeze
def parse(entry)
sanitizer = Rails::Html::FullSanitizer.new
sanitized = sanitizer.sanitize(entry.body.gsub(/^(\[[\sx]*)\]/, ''))
sanitized.gsub("\n", "<br/>")
end
# Produces an HTML output string with all of the parsed links we want
def auto_link(entry)
parsed = parse(entry)
entities = extract_entities(parsed)
auto_link_entities_wthout_cmmnt(entry, parsed, entities)
end
def auto_link_comment(reaction) # should probably live in a CommentParser
# This will break if we allow comments on comments, then we need to rethink how
# we do this
if reaction.reaction_type == 'comment' && reaction.reactable.class == Entry
sanitizer = Rails::Html::FullSanitizer.new
sanitized = sanitizer.sanitize(reaction.body)
entities = extract_entities(sanitized)
auto_link_entities(reaction.reactable, reaction, sanitized, entities)
else
reaction.body
end
end
def auto_link_entities_wthout_cmmnt(entry, text, entities)
return text if entities.empty?
# TODO: This is likely inefficient, needs caching or preloading
if entry.team.personal?
org_hash = nil
personal = true
else
org_hash = entry.team.organization.hash_id
personal = false
end
Twitter::Rewriter.rewrite_entities(text.dup, entities) do |entity, _chars|
if entity[:url]
image_or_link(entity[:url])
elsif entity[:hashtag]
if personal
"##{entity[:hashtag]}"
else
"##{entity[:hashtag]}"
end
elsif entity[:screen_name]
if !personal && user = entry.team.active_users.where(go_by_name: entity[:screen_name]).first
"##{entity[:screen_name]}"
else
"##{entity[:screen_name]}"
end
end
end
end
def auto_link_entities(entry,comment , text, entities)
return text if entities.empty?
# TODO: This is likely inefficient, needs caching or preloading
if entry.team.personal?
org_hash = nil
personal = true
else
org_hash = entry.team.organization.hash_id
personal = false
end
Twitter::Rewriter.rewrite_entities(text.dup, entities) do |entity, _chars|
if entity[:url]
image_or_link(entity[:url])
elsif entity[:hashtag]
if personal
"##{entity[:hashtag]}"
else
if comment
"##{entity[:hashtag]}"
else
"##{entity[:hashtag]}"
end
end
elsif entity[:screen_name]
if !personal && user = entry.team.active_users.where(go_by_name: entity[:screen_name]).first
"##{entity[:screen_name]}"
else
"##{entity[:screen_name]}"
end
end
end
end
# This is overridden from Twitter::Extractor because we don't want cashtags
def extract_entities(text, &block)
entities = extract_urls_with_indices(text, {extract_url_without_protocol: true}) +
extract_hashtags_with_indices(text, :check_url_overlap => false) +
extract_mentions_or_lists_with_indices(text)
return [] if entities.empty?
entities = remove_overlapping_entities(entities)
entities.each(&block) if block_given?
entities
end
def image_or_link(entity_link)
entity_url = entity_link.length > 30 ? "#{entity_link[0,25]}..." : entity_link
page_path = Addressable::URI.heuristic_parse(entity_link).to_s
begin
if ['.jpg','.png', '.gif', '.jpeg'].any? { |image_ext| page_path.downcase.include?(image_ext) }
"#{entity_url}
<div class='entry-img'>
<img src='#{page_path}' style='max-width:266px; max-height:200px;'>
</div>"
else
"#{entity_url}"
end
rescue
"#{entity_url}"
end
end
end
end
I don't know what is problem here.