url, hash, flatten, etc.

rubyonrails-talk
1

Hi,

I have a form which generates statistics:

form.rhtml --> /my_big_app/stats/generate --> view_results.rhtml

My method 'generate' generates an array of statistics @results = [hash_1,hash_2,etc.] and I want to display graphics with gruff in my view_results.rhtml page:

@results.each do |result| generate_graphic(result) end

My helper generate_graphic simply renders <img src='/my_big/app/graph_controller/generate_image/'> (I can't use image_tag since it automatically adds now a .png).

So how can I easily pass my hashes to my graph_controller? I want to have a params[:stats] = my_hash for the generate_image method but I need to flatten the hash which is ugly with a whole bunch of data.

Do you have any idea?

2

Pierre-Alexandre Meyer wrote:

Hi,

I have a form which generates statistics:

form.rhtml --> /my_big_app/stats/generate --> view_results.rhtml

My method 'generate' generates an array of statistics @results = [hash_1,hash_2,etc.] and I want to display graphics with gruff in my view_results.rhtml page:

@results.each do |result| generate_graphic(result) end

My helper generate_graphic simply renders <img src='/my_big/app/graph_controller/generate_image/'> (I can't use image_tag since it automatically adds now a .png).

So how can I easily pass my hashes to my graph_controller? I want to have a params[:stats] = my_hash for the generate_image method but I need to flatten the hash which is ugly with a whole bunch of data.

Do you have any idea?

Store it directly in the session object or store it somewhere else and point to it with the session id?

3

Actually, it's what I'm currently doing but I'm not persuaded it's the proper.superlative (propest? sounds weird) way to do this, since it's a lot of information which is periodically updated.