94 lines
3.7 KiB
Ruby
94 lines
3.7 KiB
Ruby
#
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# Copyright (C) 2011 Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class WikiPageRevisionsController < ApplicationController
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before_filter :require_context, :except => :latest_version_number
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before_filter :get_wiki_page, :except => :latest_version_number
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add_crumb(proc { t '#crumbs.wiki_pages', "Pages"}, :except => [:latest_version_number]) { |c| c.send :named_context_url, c.instance_variable_get("@context"), :context_wiki_pages_url }
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before_filter { |c| c.active_tab = "pages" }
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def index
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if @context.feature_enabled?(:draft_state)
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redirect_to polymorphic_url([@context, :named_page_revisions], :wiki_page_id => @page)
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return
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end
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if authorized_action(@page, @current_user, :update_content)
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respond_to do |format|
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format.html {
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add_crumb(@page.title, named_context_url(@context, :context_wiki_page_url, @page))
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add_crumb(t("#crumbs.revisions", "Revisions"))
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log_asset_access(@page, "wiki", @wiki)
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}
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format.json { render :json => @page.version_history.map{ |v| v.as_json(methods: :version_number) }}
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end
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end
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end
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def latest_version_number
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# Technically this method leaks information. We're avoiding doing
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# a permission check to keep this lookup fast, since its only purpose is
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# to make sure somebody hasn't edited the page from underneath somebody
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# else. It does divulge the page id, and current version number, though.
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# If we're not ok with that, we can add a permission check.
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@version = params[:wiki_page_id].to_i.to_s == params[:wiki_page_id] &&
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Version.where(:versionable_type => 'WikiPage', :versionable_id => params[:wiki_page_id]).order('number DESC').first
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if !@version
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get_context
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get_wiki_page
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@version = @page.versions[0] rescue nil
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end
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@version_number = @version.number rescue 0
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@id = @version.versionable_id rescue nil
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render :json => {:wiki_page => {:id => @id, :version_number => @version_number} }
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end
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def show
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if @context.feature_enabled?(:draft_state)
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redirect_to polymorphic_url([@context, :named_page_revisions], :wiki_page_id => @page)
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return
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end
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if authorized_action(@page, @current_user, :update_content)
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if params[:id] == "latest"
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@revision = @page.versions[0]
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else
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@revision = @page.versions.find(params[:id])
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end
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respond_to do |format|
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format.html {
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add_crumb(@page.title, named_context_url(@context, :context_wiki_page_url, @page))
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log_asset_access(@page, "wiki", @wiki)
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}
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@model = @revision.model rescue nil
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format.json { render :json => @model.as_json(:methods => :version_number) }
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end
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end
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end
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def update
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if authorized_action(@page, @current_user, :update)
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@revision = @page.versions.find(params[:id])
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except_fields = [:id] + WikiPage.new.attributes.keys - WikiPage.accessible_attributes.to_a
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@page.revert_to_version @revision, :except => except_fields
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flash[:notice] = t('notices.page_rolled_back', 'Page was successfully rolled-back to previous version.')
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redirect_to polymorphic_url([@context, @page])
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end
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end
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end
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