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We are trying to use set_primary_key to cause an existing rails db to use a different primary key. This works find for accessing existing data, but gives an error when we try to add a new record, as it seems to still be accessing the record by the default id field at that point. Are there other changes we need to make to get an alternate primary key working? Thanks, Ken

I have a query that is intended to find all "transfers" based on a condition the uses a second table. In the controller, it looks like this: def find_protocols @transfers = Transfer.find(:all, :from => "transfers, protocols", :conditions => "transfers.protocol_id = protocols.id AND protocols.name = \"#{params[:protocol]}\"") respond_to do

Hi, I want to update an existing row in table "items" where items.id == 10 I tried this: item = Item.new item.f1 = ... item.f2 = ... ... item.id = 10 item.save I got an error Duplicate entry ... for key 10 : INSERT INTO items ... How do I make item.save to use UPDATE instead of INSERT? -- Posted via http://www.ruby-forum.com/.

On my website people will be able to upload images of themselves. I was wondering how people are presently handling uploading, resizing and optimizing images in Rails? Do you use a specific piece of software to do it? What would you guys recommend? Any code from RailsDay? :-) Also, do you guys store the images in the DB or just as files? What do you suggest? What are the pros and

I am building a site where a user will ftp a bunch of media files to a server(s). I have a process that runs against all those files and creates a yml and sql file that can be used to import them into my ruby on rails application running somewhere completely different. If I use the sql file, it bypasses all my great validation code in the model (no good) I would like to import the yml file. I

Hello, I''m trying to write a utility to run an external process and capture it''s stderr. It seems that IO.popen only lets me read the stdout. Any tips for how to read stderr? Mike snippet of code... def process_file(filename) @filename = filename puts "Processing: " + @filename cmdline = "ffmpeg -i " + @filename ffmpeg =

This is a reminder. Please distribute this email. Data on both agile and plan-driven projects are welcome. To Whom It May Concern, My name is Donald Buresh, and I am a Ph.D. student at Northcentral University located in Prescott Valley, Arizona. The reason that I am writing to you is because I would like you to participate in an internet survey for my dissertation. The topic of my