Accessing params in actionview

rubyonrails-talk
1

Hi

I need something like :

   <% obj = params[:obj].find(params[:obj_id]) %>

Well, you need to look at the documentation for ActiveSupport::Inflector.constantize and Object#send

  http://www.railsbrain.com/api/rails-2.1.2/doc/index.html?a=M000945&name=constantize   ri Object#send

  params[:obj].constantize.find(params[:obj_id]).send(params[:obj_method])

But you should know that this is potentially disastrous, say if params has {:obj => "ImportantModel", :obj_id => "1", :obj_method => "destroy"}. (Repeat with all other values for :obj_id :wink:

Note also that you don't check for any exceptions (such as ActiveRecord::RecordNotFound or NoMethodError)

-Rob

   <textarea id="mce_edit" style="height:430px; width:100%;">      <%= obj.params[:obj_method] %>    </textarea>

in a partial. params[:obj] and params[:obj_method] are strings like TrstSysPage, title. params[:obj_id] is number and is only working for the rest I got

undefined method `params' for #<Enumerable::Enumerator:0xb4b38b48>

Extracted source (around line #17):

14: <body style="background-color : #AFAFAF; padding: 10px 10px 0 10px;"> 15: <% obj = params[:obj].find(params[:obj_id]) %> 16: <textarea id="mce_edit" style="height:430px; width:100%;"> 17: <%= obj.params[:obj_method] %> 18: </textarea> 19: <p style="padding: 15px 0 0 10px">

I'm stuck :slight_smile: -- Posted via http://www.ruby-forum.com/.

Rob Biedenharn http://agileconsultingllc.com Rob@AgileConsultingLLC.com

2

Rob Biedenharn wrote:

params[:obj].constantize.find(params[:obj_id]).send(params[:obj_method])

But you should know that this is potentially disastrous, say if params has {:obj => "ImportantModel", :obj_id => "1", :obj_method => "destroy"}. (Repeat with all other values for :obj_id :wink:

Note also that you don't check for any exceptions (such as ActiveRecord::RecordNotFound or NoMethodError)

Thanks! I use this just for edit some html data with mceEdit. All params comes from regularly checked edit form, but I needed a new screen/window for those text fields :slight_smile:

Thanks again I'll try tomorrow . Here is :slight_smile: already tomorrow

3

You are the best!!! It's working !

I haven't patience till morning

Long live rails community :slight_smile: