alert the user when submitting a long-ago-submitted story

show the user a link to the previous story and let them know they
can submit it again if they want to (just by submitting the form
again)

app/assets/stylesheets/application.css

@@ -1034,6 +1034,9 @@ div.flash-notice {
	border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.25);
}

div.flash-error h2,
div.flash-notice h2,
div.flash-success h2,
div.errorExplanation h2 {
	font-size: 1.25em;
	margin: 0;

app/controllers/stories_controller.rb

@@ -16,28 +16,19 @@ def create
    @story.url = params[:story][:url]
    @story.user_id = @user.id

    if @story.save
      Vote.vote_thusly_on_story_or_comment_for_user_because(1, @story.id,
        nil, @user.id, nil)

      Countinual.count!("#{Rails.application.shortname}.stories.submitted",
        "+1")

      return redirect_to @story.comments_url

    else
      if @story.already_posted_story
        # consider it an upvote
        Vote.vote_thusly_on_story_or_comment_for_user_because(1,
          @story.already_posted_story.id, nil, @user.id, nil)
    if @story.valid? && !(@story.already_posted_story && !@story.seen_previous)
      if @story.save
        Vote.vote_thusly_on_story_or_comment_for_user_because(1, @story.id,
          nil, @user.id, nil)

        flash[:success] = "This URL has already been submitted recently."
        Countinual.count!("#{Rails.application.shortname}.stories.submitted",
          "+1")

        return redirect_to @story.already_posted_story.comments_url
        return redirect_to @story.comments_url
      end

      return render :action => "new"
    end

    return render :action => "new"
  end

  def destroy
@@ -87,11 +78,16 @@ def new
    if params[:url].present?
      @story.url = params[:url]

      # if this story was already submitted, don't bother the user filling out
      # tags and stuff, just redirect them right away
      if s = Story.find_recent_similar_by_url(@story.url)
        flash[:success] = "This URL has already been submitted recently."
        return redirect_to s.comments_url
      if s = Story.find_similar_by_url(@story.url)
        if s.is_recent?
          # user won't be able to submit this story as new, so just redirect
          # them to the previous story
          flash[:success] = "This URL has already been submitted recently."
          return redirect_to s.comments_url
        else
          # user will see a warning like with preview screen
          @story.already_posted_story = s
        end
      end

      if params[:title].present?
@@ -112,6 +108,8 @@ def preview

    @story.valid?

    @story.seen_previous = true

    return render :action => "new", :layout => false
  end

app/models/story.rb

@@ -12,10 +12,15 @@ class Story < ActiveRecord::Base
  # after this many minutes old, a story cannot be edited
  MAX_EDIT_MINS = 30

  attr_accessor :vote, :already_posted_story, :fetched_content, :previewing
  # days a story is considered recent
  RECENT_DAYS = 30

  attr_accessor :vote, :already_posted_story, :fetched_content, :previewing,
    :seen_previous
  attr_accessor :editor_user_id, :moderation_reason

  attr_accessible :title, :description, :tags_a, :moderation_reason
  attr_accessible :title, :description, :tags_a, :moderation_reason,
    :seen_previous

  before_validation :assign_short_id,
    :on => :create
@@ -27,9 +32,12 @@ class Story < ActiveRecord::Base
      # URI.parse is not very lenient, so we can't use it

      if self.url.match(/\Ahttps?:\/\/([^\.]+\.)+[a-z]+(\/|\z)/)
        if self.new_record? && (s = Story.find_recent_similar_by_url(self.url))
          errors.add(:url, "has already been submitted recently")
        if self.new_record? && (s = Story.find_similar_by_url(self.url))
          self.already_posted_story = s
          if s.is_recent?
            errors.add(:url, "has already been submitted within the past " <<
              "#{RECENT_DAYS} days")
          end
        end
      else
        errors.add(:url, "is not valid")
@@ -41,7 +49,7 @@ class Story < ActiveRecord::Base
    check_tags
  end

  def self.find_recent_similar_by_url(url)
  def self.find_similar_by_url(url)
    urls = [ url.to_s ]
    urls2 = [ url.to_s ]

@@ -66,14 +74,13 @@ def self.find_recent_similar_by_url(url)
    end
    urls = urls2.clone

    conds = [ "created_at >= ? AND (", (Time.now - 30.days) ]
    conds = [ "" ]
    urls.uniq.each_with_index do |u,x|
      conds[0] << (x == 0 ? "" : " OR ") << "url = ?"
      conds.push u
    end
    conds[0] << ")"

    if s = Story.where(*conds).first
    if s = Story.where(*conds).order("id DESC").first
      return s
    end

@@ -376,6 +383,10 @@ def is_gone?
    is_expired?
  end

  def is_recent?
    self.created_at >= RECENT_DAYS.days.ago
  end

  def recalculate_hotness!
    update_column :hotness, calculated_hotness
  end

app/views/stories/_form.html.erb

@@ -1,5 +1,20 @@
<%= error_messages_for f.object %>

<% if !f.object.errors.any? && f.object.already_posted_story %>
  <div class="flash-notice">
  <h2>Note: This story was already submitted <%=
    time_ago_in_words(f.object.already_posted_story.created_at) %> ago, but may
    be submitted again.</h2>
  <p>
  Please view the <a href="<%= f.object.already_posted_story.comments_url %>"
  target="_blank">previous discussion</a> for this story first.  If the content
  has changed or warrants new discussion, you may submit it again.
  </p>
  </div>

  <%= f.hidden_field :seen_previous %>
<% end %>

<div class="box">
  <div class="boxline">
  <% if f.object.url_is_editable_by_user?(@user) %>