Re: [Rails] Re: ROR newb with MVC question

[Garrett Lancaster]

To test if the method is actually getting called place raise 'Inside 
uploadFile' at the top of the method.

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        Tsega <mailto:tsegasela...@gmail.com>
February 1, 2011 3:50 PM


One thing I forgot here is that you need to add the create action in 
your controller that would be used to house the code for uploading the 
file:

def create
  post = Import.proc_csv( params[:upload])
  flash[:notice] = "File imported successfully"
  redirect_to :action => :index
  rescue
      flash[:error] = "Error importing file"
      redirect_to :action => 'index'
end
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        Tsega <mailto:tsegasela...@gmail.com>
February 1, 2011 3:36 PM


OK, I must first inform you, I'm no rails guru (not yet anyways) but 
here is what I think should be your directory structure:

app/
     controllers/
                uploads_controller.rb  # This will contain the 
UploadController class
     views/
            uploads/
                  index.html.erb   # This will be the view to list the 
uploaded files (info)
                  new.html.erb     # This will be the form used to 
upload files
      models/
           upload.rb  # This is your model to represent an upload

Now that we have that in place, now the controller index method would 
automatically render the index.html.erb so there is no need for you to 
render the template directly. If you would like to see the list of 
uploaded document then may be you might need to the following your 
index controller method;

    def index
      @uploads = Upload.all # this gets all upload information and
    makes it available for the view
    end


and then you render then in your view, i.e. the index.html.erb file do 
the following to list them all

    <ul>
    <%= @uploads.each do |upload| %>
    <li><%= upload.title %></li> <!-- I'm just using title here but
    you should change it to something that you have in your model -->
    <% end %>
    </ul>


So gives you list of upload info on the index.html.erb page. Now the 
next thing would be to actually create upload info; that where the new 
action (a controller method), and new.html.erb come in. A word of 
caution here; I have never done a form that uploads files so I can not 
give you much detail here, but there is a good gem called *paperclip* 
so you might want to check that out for details but here is what I 
would given the information you provided above.

In your controller you need to add the following action:


    def new
      @upload = Upload.new # This is a new upload model that you can
    use to create your upload form
    end



then in you new.html.erb you add the following:

    <% form_for(@upload) do |f| %>
    <p><label for="upload_file">Select File</label> :
    <%= file_field 'upload', 'datafile' %></p>
    <%= submit_tag "Upload" %>
    <% end %>


I kinda feel this is a bit incomplete but I'm sure someone can build 
on this or just find another way to help you with your problem. I hope 
this helped in making things clearer. If you are in need of a good 
place to start with RoR go here, railstutorial.org. I can say it is 
the best and most complete book I've ever read on programming. It's 
that good!

Regards,
Tsega






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