361 lines
9.2 KiB
Ruby
361 lines
9.2 KiB
Ruby
class HomeController < ApplicationController
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include IntervalHelper
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caches_page :index, :newest, :newest_by_user, :recent, :top, if: CACHE_PAGE
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# for rss feeds, load the user's tag filters if a token is passed
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before_action :find_user_from_rss_token, :only => [:index, :newest, :saved, :upvoted]
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before_action { @page = page }
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before_action :require_logged_in_user, :only => [:hidden, :saved, :upvoted]
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before_action :show_title_h1, only: [:top]
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def active
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@stories, @show_more = get_from_cache(active: true) {
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paginate stories.active
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}
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@title = 'Active Discussions'
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@above = 'active'
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respond_to do |format|
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format.html { render action: :index }
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format.json { render json: @stories }
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end
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end
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def hidden
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@stories, @show_more = get_from_cache(hidden: true) {
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paginate stories.hidden
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}
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@title = "Hidden Stories"
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@above = 'saved/subnav'
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render :action => "index"
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end
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def index
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@stories, @show_more = get_from_cache(hottest: true) {
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paginate stories.hottest
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}
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@rss_link ||= {
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:title => "RSS 2.0",
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:href => user_token_link("/rss"),
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}
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@comments_rss_link ||= {
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:title => "Comments - RSS 2.0",
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:href => user_token_link("/comments.rss"),
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}
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@title = ""
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@root_path = true
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user
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@title = "Private feed for #{@user.username}"
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render :action => "rss", :layout => false
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else
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content = Rails.cache.fetch("rss", :expires_in => (60 * 2)) {
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render_to_string :action => "rss", :layout => false
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}
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render :plain => content, :layout => false
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end
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}
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format.json { render :json => @stories }
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end
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end
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def newest
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@stories, @show_more = get_from_cache(newest: true) {
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paginate stories.newest
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}
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@title = "Newest Stories"
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@above = 'stories/subnav'
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@rss_link = {
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:title => "RSS 2.0 - Newest Items",
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:href => user_token_link("/newest.rss"),
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user && params[:token].present?
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@title += " - Private feed for #{@user.username}"
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end
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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def newest_by_user
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by_user = User.find_by!(username: params[:user])
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@stories, @show_more = get_from_cache(by_user: by_user) {
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if @user && @user.is_moderator?
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paginate stories.newest_including_deleted_by_user(by_user)
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else
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paginate stories.newest_by_user(by_user)
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end
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}
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@title = "Newest Stories by #{by_user.username}"
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@newest_by_user = by_user
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@above = 'newest_by_user'
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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def recent
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@stories, @show_more = get_from_cache(recent: true) {
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paginate Story.recent(@user, filtered_tag_ids)
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}
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@title = "Recent Stories"
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@above = 'stories/subnav'
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@below = 'recent'
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# our list is unstable because upvoted stories get removed, so point at /newest.rss
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@rss_link = { :title => "RSS 2.0 - Newest Items", :href => user_token_link("/newest.rss") }
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render :action => "index"
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end
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def saved
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@stories, @show_more = get_from_cache(hidden: true) {
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paginate stories.saved
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}
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@rss_link ||= {
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:title => "RSS 2.0",
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:href => user_token_link("/saved.rss"),
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}
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@title = "Saved Stories"
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@above = 'saved/subnav'
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss {
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if @user
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@title = "Private feed of saved stories for #{@user.username}"
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end
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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def category
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category_params = params[:category].split(',')
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@categories = Category.where(category: category_params)
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raise ActiveRecord::RecordNotFound unless @categories.length == category_params.length
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@stories, @show_more = get_from_cache(categories: category_params.sort.join(',')) do
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paginate stories.categories(@categories)
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end
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@title = @categories.map(&:category).join(' ')
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@above = 'category'
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@rss_link = {
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title: "RSS 2.0 - Categorized #{@title}",
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href: category_url(params[:category], format: 'rss'),
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss { render :action => "rss", :layout => false }
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format.json { render :json => @stories }
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end
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end
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def single_tag
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@tag = Tag.find_by!(tag: params[:tag])
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@stories, @show_more = get_from_cache(tag: @tag.tag) do
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paginate stories.tagged([@tag])
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end
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@title = [@tag.tag, @tag.description].compact.join(' - ')
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@above = 'single_tag'
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@related = Rails.cache.fetch("related_#{@tag.tag}", expires_in: 1.day) {
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Tag.related(@tag)
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}
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@below = 'tags/multi_tag_tip'
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@rss_link = {
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title: "RSS 2.0 - Tagged #{@tag.tag} (#{@tag.description})",
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href: "/t/#{@tag.tag}.rss",
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss { render :action => "rss", :layout => false }
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format.json { render :json => @stories }
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end
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end
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def multi_tag
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tag_params = params[:tag].split(',')
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@tags = Tag.where(tag: tag_params)
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raise ActiveRecord::RecordNotFound unless @tags.length == tag_params.length
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@stories, @show_more = get_from_cache(tags: tag_params.sort.join(',')) do
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paginate stories.tagged(@tags)
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end
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@title = @tags.map do |tag|
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[tag.tag, tag.description].compact.join(' - ')
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end.join(' ')
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@above = 'multi_tag'
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@rss_link = {
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title: "RSS 2.0 - Tagged #{tags_with_description_for_rss(@tags)}",
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href: "/t/#{params[:tag]}.rss",
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss { render :action => "rss", :layout => false }
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format.json { render :json => @stories }
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end
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end
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def for_domain
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@domain = Domain.find_by!(domain: params[:id])
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@stories, @show_more = get_from_cache(domain: @domain.domain) do
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paginate @domain.stories.base(@user).order('id desc')
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end
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@title = @domain.domain
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@above = 'for_domain'
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@rss_link = {
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title: "RSS 2.0 - For #{@domain.domain}",
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href: "/domain/#{@domain.domain}.rss",
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss { render :action => "rss", :layout => false }
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format.json { render :json => @stories }
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end
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end
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def top
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length = time_interval(params[:length])
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@stories, @show_more = get_from_cache(top: true, length: length) {
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paginate stories.top(length)
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}
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if length[:dur] > 1
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@title = "Top Stories of the Past #{length[:dur]} #{length[:intv]}"
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else
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@title = "Top Stories of the Past #{length[:intv]}"
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end
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@above = 'stories/subnav'
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@rss_link ||= {
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:title => "RSS 2.0 - " + @title,
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:href => "/top/rss",
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}
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respond_to do |format|
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format.html { render :action => "index" }
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format.rss { render :action => "rss", :layout => false }
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end
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end
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def upvoted
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@stories, @show_more = get_from_cache(upvoted: true, user: @user) {
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paginate @user.upvoted_stories.includes(:tags).order('votes.id DESC')
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}
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@title = "Upvoted Stories"
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@above = 'saved/subnav'
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@rss_link = {
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:title => "RSS 2.0 - Upvoted Stories",
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:href => user_token_link("/upvoted.rss"),
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}
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respond_to do |format|
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format.html { render action: :index }
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format.rss {
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if @user && params[:token].present?
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@title += " - Private feed for #{@user.username}"
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end
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render :action => "rss", :layout => false
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}
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format.json { render :json => @stories }
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end
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end
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private
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def filtered_tag_ids
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if @user
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@user.tag_filters.map(&:tag_id)
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else
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tags_filtered_by_cookie.map(&:id)
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end
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end
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def stories
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StoryRepository.new(@user, exclude_tags: filtered_tag_ids)
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end
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def page
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p = params[:page].to_i
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if p == 0
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p = 1
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elsif p < 0 || p > (2 ** 32)
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raise ActionController::RoutingError.new("page out of bounds")
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end
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p
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end
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def paginate(scope)
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StoriesPaginator.new(scope, page, @user).get
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end
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def get_from_cache(opts = {}, &block)
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if Rails.env.development? || @user || tags_filtered_by_cookie.any?
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yield
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else
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key = opts.merge(page: page).sort.map {|k, v| "#{k}=#{v.to_param}" }.join(" ")
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begin
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Rails.cache.fetch("stories #{key}", :expires_in => 45, &block)
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rescue Errno::ENOENT => e
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Rails.logger.error "error fetching stories #{key}: #{e}"
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yield
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end
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end
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end
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def user_token_link(url)
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@user ? "#{url}?token=#{@user.rss_token}" : url
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end
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def tags_with_description_for_rss(tags)
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tags.map {|tag| "#{tag.tag} (#{tag.description})" }.join(' ')
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end
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end
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