augustl (owner)

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gist: 172694 Download_button fork
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lib/admin_controller_crud_actions.rb #
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# Include this module into the controllers you want to easy-mode CRUD
module AdminControllerCrudActions
  COLUMN_MAP = {
    :string => :text_field,
    :text => :text_area,
    :integer => :text_field,
    :datetime => :datetime_select
  }
  
  def index
    @collection = all
    @model_class = current_model
    
    render_inline_with_layout %{
      <p><%= link_to "New", :action => "new" %></p>
      
      <table>
        <thead>
          <tr>
            <% @model_class.content_columns.each do |column| %>
              <th><%= column.name.humanize %></th>
            <% end %>
            <th></th>
          </tr>
        </thead>
        <tbody>
          <% @collection.each do |instance| %>
            <tr>
              <% @model_class.content_columns.each do |column| %>
                <td><%= instance[column.name] %></td>
              <% end %>
              <td>
                <%= link_to "Edit", :action => "edit", :id => instance %>
                <%= button_to "Destroy", {:action => "show", :id => instance}, :method => :delete, :confirm => "Are you sure?" %>
              </td>
            </tr>
          <% end %>
        </tbody>
      </table>
    }
  end
  
  def new
    @instance = current_model.new
    render_inline_with_layout(form_view)
  end
  
  def create
    @instance = current_model.new(current_params)
    
    if @instance.save
      flash[:success] = "Saved successfully"
      redirect_to :action => "index"
    else
      render :action => "new"
    end
  end
  
  def edit
    @instance = current_model.find(params[:id])
    render_inline_with_layout(form_view)
  end
  
  def update
    @instance = current_model.find(params[:id])
    
    if @instance.update_attributes(current_params)
      flash[:success] = "Saved successfully"
      redirect_to :action => "index"
    else
      render :action => "edit"
    end
  end
  
  def destroy
    @instance = current_model.find(params[:id])
    @instance.destroy
    flash[:success] = "Deleted successfully"
    redirect_to :action => "index"
  end
  
  private
  
  def form_view
    %{
      <% form_for([:admin, @instance], :html => {:multipart => true}) do |f| %>
        <% f.object.class.content_columns.reject {|c| c.name =~ /updated_at|created_at/ }.each do |column| %>
          <%= f.label column.name %>
          
          <% if column.name =~ /file_name$/ %><%# paperclip %>
            <%= f.file_field column.name[/(.*?)_file_name/, 1] %>
          <% else %>
            <%= f.send((AdminControllerCrudActions::COLUMN_MAP[column.type] || column.type), column.name) %>
          <% end %>
        <% end %>
        
        <p><%= f.submit %> or <%= link_to "cancel", :action => "index" %>.</p>
      <% end %>
    }
  end
  
  def all
    current_model.find(:all)
  end
  
  # Post
  def current_model
    controller_name.singularize.camelize.constantize
  end
  
  # params[:post]
  def current_params
    params[controller_name.singularize]
  end
  
  def render_inline_with_layout(view)
    render :inline => view, :layout => true
  end
end