Passing parameter from a dropdown

Rails
1

Hello,

I have a dropdown in the UI. There are many oprions.
How do I send the parameter from the dropdown - the selected value to
the
controller?

I have tried :-

  1. <%= select_tag ‘name’, options_for_select(@list, :selected) %>
  2. <%= select(“audit”, “value”,options_for_select([[“User Registration”,
    “USER_REGISTRATION”], [“Download”, “USER_REPORT”]], :selected =>
    params[:value]) %>

I am not getting any parameters passed to the controller.

2

On Thu, Dec 20, 2012 at 12:53 PM, Avi [email protected] wrote:

“USER_REGISTRATION”], [“Download”, “USER_REPORT”]], :selected =>
params[:value]) %>

I am not getting any parameters passed to the controller.

make sure that the select tag above is part of the form you are
submitting
and that you
are actually submitting to the right action. A quick look on your code
raised no issues.

For more options, visit https://groups.google.com/groups/opt_out.

–

3

I am not adding any form because there is no model for this page.
Only there is controller and view.

4

On Thu, Dec 20, 2012 at 1:45 PM, Avi [email protected] wrote:

I am not adding any form because there is no model for this page.
Only there is controller and view.

you need to add a form to pass the selected values to the controller.
It
doesn’t
matter whether you’re accessing a model or not.

I have a dropdown in the UI. There are many oprions.
I am not getting any parameters passed to the controller.

.
–

–

5

On Fri, Dec 21, 2012 at 2:46 PM, Avi [email protected] wrote:

Sorry for late reply…

Can’t we pass the param through ajax or js ?

yes you can. you have to read on ajax.

Only there is controller and view.

I have tried :-
submitting and that you
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–

6

Sorry for late reply…

Can’t we pass the param through ajax or js ?

7

Somehow I did manage to pass the parameter from the dropdown to
controller.
But the problem is here - I am getting it as string.

In Controller:----

class ReportController < ApplicationController

REPORT1 = “type =?”, “Box”
REPORT2 = “action = ? and type =?”, “create”, “Square”

def report
param = params[:audit_report] // How to convert this string to an
object
or static variable ? Or what is the best way to do it ?
@report_data =
(Audited::Adapters::ActiveRecord::Audit.where(param))
// If I am passing this param, it comes as a string not as static
varaible
in this controller.
end

end

In View :----

<%= select_tag “reports_name”, options_for_select([[“User1”, “REPORT1”],
[“User2”, “REPORT2”]]), :onchange =>“audit_options(this.value)” %>

8

Sent from my iPhone

On 21/12/2012, at 8:32 PM, Avi [email protected] wrote:

<%= select_tag “reports_name”, options_for_select([[“User1”, “REPORT1”],
[“User2”, “REPORT2”]]), :onchange =>“audit_options(this.value)” %>

You should read on action controller basics. And also on debugging using
pry or debugger so you can experiment on what you want to achieve. Good
luck!