parameter values

rubyonrails-talk
1

Hi all, i'm a bigginer in rails, i used before a j2ee there was a method       request.getParameterValues(param_name) that return array of parameters values than have the same name

is there like that method in rails

Thanks M.SH

2

What exactly do you mean 'the same name' ?

In Rails we have

request.path_parameters - the Hash of parameters generating a url actually, like :controller, :action, :host, :subdomain, :id or any other due to your routing settings. ex.: http://yoursite.com/articles/1 (:host => 'yoursite.com', :controller => 'articles', :action => 'show', :id => '1')

request.query_parameters - the Hash of additional parameters, it can be whatever. ex. :http://yoursite.com/articles&q="love" (:q => 'love')

combined accessor 'params' - the Hash of all parameters.

Since it Hash, there is no duplicate keys. Each key is uniq, but the values individual.

3 
 request\.getParameterValues\(param\_name\)

that return array of parameters values than have the same name

What exactly do you mean 'the same name' ?

Exactly what he said -- the same name.

This: Example Domain

:: is a perfectly valid URL and easily processed in a Java web app.

combined accessor 'params' - the Hash of all parameters.

Since it Hash, there is no duplicate keys. Each key is uniq, but the values individual.

Yeah, I've never understood that choice.

4

Exactly what he said -- the same name.

This: Example Domain

Unacceptable :slight_smile:

Rails' approach: each key is unique.

If you want to get them grouped, just wrap them to array, and your params accessor will be like: {:foo => ['bar','bad','xyz']}

Yeah, I've never understood that choice.

Philosophy.

5

thank u for your reply, i mean by name like

<form ..   <input type="text" name="street">   <input type="text" name="street">   .   . </from>

i don't know the no. of elements <input>

6

Counter-philosophy --

  Be liberal in what you accept, and conservative in what you send.      (Postel's Law)

Silently discarding data from a client is not, to my mind, a good thing.

To the OP: the answer is "no" :slight_smile:

7

use <input type="text" name="street"> <input type="text" name="street"> and I think you will get them as an array in params[:street]

Colin

8

thanks for all but Colin is the right answer for me i have try it Colin ++ :slight_smile: