112 lines
2.9 KiB
Ruby
112 lines
2.9 KiB
Ruby
class HomeController < ApplicationController
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STORIES_PER_PAGE = 20
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def index
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@stories = find_stories_for_user_and_tag_and_newest(@user, nil, false)
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@rss_link ||= "<link rel=\"alternate\" type=\"application/rss+xml\" " <<
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"title=\"RSS 2.0\" href=\"/rss\" />"
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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 newest
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@stories = find_stories_for_user_and_tag_and_newest(@user, nil, true)
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@page_title = "Newest Stories"
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@rss_link = "<link rel=\"alternate\" type=\"application/rss+xml\" " <<
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"title=\"RSS 2.0 - Newest Items\" href=\"/newest.rss\" />"
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@title = "Newest Stories"
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@title_url = "/newest"
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@newest = true
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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 tagged
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@tag = Tag.find_by_tag!(params[:tag])
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@stories = find_stories_for_user_and_tag_and_newest(@user, @tag, false)
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@page_title = @tag.description
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@rss_link = "<link rel=\"alternate\" type=\"application/rss+xml\" " <<
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"title=\"RSS 2.0 - Tagged #{CGI.escape(@tag.tag)} " <<
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"(#{CGI.escape(@tag.description)})\" href=\"/t/" +
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"#{CGI.escape(@tag.tag)}.rss\" />"
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@title = @tag.description.blank?? @tag.tag : @tag.description
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@title_url = tag_url(@tag.tag)
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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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private
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def find_stories_for_user_and_tag_and_newest(user, tag = nil, newest = false)
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conds = [ "is_expired = 0 AND is_moderated = 0 " ]
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if user && !newest
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# exclude downvoted items
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conds[0] << "AND stories.id NOT IN (SELECT story_id FROM votes " <<
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"WHERE user_id = ? AND vote < 0) "
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conds.push user.id
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end
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if tag
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conds[0] << "AND taggings.tag_id = ?"
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conds.push tag.id
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elsif user
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conds[0] += " AND taggings.tag_id NOT IN (SELECT tag_id FROM " <<
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"tag_filters WHERE user_id = ?)"
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conds.push @user.id
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end
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@page = 1
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if params[:page].to_i > 0
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@page = params[:page].to_i
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end
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stories = Story.find(
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:all,
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:conditions => conds,
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:include => [ :user, { :taggings => :tag } ],
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:limit => STORIES_PER_PAGE + 1,
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:offset => ((@page - 1) * STORIES_PER_PAGE),
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:order => (newest ? "stories.created_at DESC" : "hotness")
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)
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@show_more = false
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if stories.count > STORIES_PER_PAGE
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@show_more = true
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stories.pop
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end
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# TODO: figure out a better sorting algorithm for newest, including some
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# older stories that got one or two votes
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if user
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votes = Vote.votes_by_user_for_stories_hash(user.id,
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stories.map{|s| s.id })
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stories.each do |s|
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if votes[s.id]
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s.vote = votes[s.id]
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end
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end
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end
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stories
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end
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end
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