Class: PaperTrailManager::ChangesController

Inherits:
Object
  • Object
show all
Defined in:
app/controllers/paper_trail_manager/changes_controller.rb

Constant Summary collapse

PER_PAGE =

Default number of changes to list on a pagenated index page.

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Instance Method Summary collapse

Instance Method Details

#index ⇒ Object

List changes



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# File 'app/controllers/paper_trail_manager/changes_controller.rb', line 16

def index
  unless change_index_allowed?
    flash[:error] = 'You do not have permission to list changes.'
    return(redirect_to root_url)
  end

  @versions = PaperTrail::Version.order('created_at DESC, id DESC')
  @versions = @versions.where(item_type: params[:type]) if params[:type]
  @versions = @versions.where(item_id: params[:id]) if params[:id]

  # Ensure pagination parameters have sensible values
  @page = params[:page].to_i
  @page = nil if @page.zero?

  @per_page = params[:per_page].to_i
  @per_page = nil if @per_page.zero?

  @versions = if defined?(WillPaginate)
                @versions.paginate(page: @page, per_page: @per_page)
              else
                @versions.page(@page).per(@per_page)
              end

  respond_to do |format|
    format.html # index.html.erb
    format.atom # index.atom.builder
    format.json { render json: @versions }
  end
end

#show ⇒ Object

Show a change



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# File 'app/controllers/paper_trail_manager/changes_controller.rb', line 47

def show
  begin
    @version = PaperTrail::Version.find(params[:id])
  rescue ActiveRecord::RecordNotFound
    flash[:error] = 'No such version.'
    return(redirect_to action: :index)
  end

  unless change_show_allowed?(@version)
    flash[:error] = 'You do not have permission to show that change.'
    return(redirect_to action: :index)
  end

  respond_to do |format|
    format.html # show.html.erb
    format.json { render json: @version }
  end
end

#update ⇒ Object

Rollback a change



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# File 'app/controllers/paper_trail_manager/changes_controller.rb', line 67

def update
  begin
    @version = PaperTrail::Version.find(params[:id])
  rescue ActiveRecord::RecordNotFound
    flash[:error] = 'No such version.'
    return(redirect_to(changes_path))
  end

  unless change_revert_allowed?(@version)
    flash[:error] = 'You do not have permission to revert this change.'
    return(redirect_to changes_path)
  end

  if @version.event == 'create'
    @record = @version.item_type.constantize.find(@version.item_id)
    @result = @record.destroy
  else
    @record = @version.reify
    @result = @record.save
  end

  if @result
    if @version.event == 'create'
      flash[:notice] = 'Rolled back newly-created record by destroying it.'
      redirect_to changes_path
    else
      flash[:notice] = 'Rolled back changes to this record.'
      redirect_to change_item_url(@version)
    end
  else
    flash[:error] = "Couldn't rollback. Sorry."
    redirect_to changes_path
  end
end