ruby - Editing file in Rails (using text area) -

i want edit file stored on hdd rails in way: 1. open file , load content 'text_area' (or other field can edit it) 2. edit content in 'text_area' 3. save changes file

i have code here:

1) [controller]

 def show     @myfile = file.read("/home/pi/www/web-svn/repositories/repo2/hooks/post-commit.tmpl")  end 

2) [view]

<%= text_area_tag(:message, @myfile, :size => "100x60") %> 

3) ???

here problem, how pass edited text controller again , save changes. if have better idea whole procedure can pass usefull code.

in controller's edit() method, determine filename url , read file contents specified file instance variable (@myfile). render view, passed browser, edited user, , edited text passed server post data. rails puts post data params hash , calls controller's update() method. in update() filename determined url, modified contents retrieved params hash , written file. lather, rinse, repeat.

added:

this off top of head , untested, treat pseudo-code, should going in right direction. i'm sure design can improved.

your form_tag should below. specifies controller, action, , method request server. :file appears because restful route should specify resource updated (see below).

form_tag({:controller => :hooks, :action => :update, :file => @myfilename}, {:method => :put}) [...] end 

so, how pass filename browser can come update request? in 1 restful design, urls /hooks/:action/:file. value of :file specify file resource, , if set routes use form, params[:file] available in controller. have controller do

def edit     @myfilename = params[:file]     @myfile     = file.read(@myfilename) end 

and form_tag above should work. i'll leave encoding of filename , setting routes you.