Passing parameter from a dropdown.

[Avi]

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.

     

[Jim Ruther Nill]

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.

 

     

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[Avi]

I am not adding any form because there is no model for this page. 

Only there is controller and view.

[Jim Ruther Nill]

On Thu, Dec 20, 2012 at 1:45 PM, Avi <aavinas...@gmail.com> 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.

 

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[Avi]

Sorry for late reply...

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

[Jim Ruther Nill]

On Fri, Dec 21, 2012 at 2:46 PM, Avi <aavinas...@gmail.com> wrote:

Sorry for late reply...

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

yes you can. you have to read on ajax.

 

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[Avi]

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 :----

<script type="text/javascript">

        function audit_options(selected_audit){

jQuery("#reports").load("/audit_report/report?audit_report=" + selected_audit);  

        }

</script>

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

<div id="reports">

</div>

-------------------

[Jim Ruther Nill]

Sent from my iPhone

On 21/12/2012, at 8:32 PM, Avi <aavinas...@gmail.com> wrote:

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 :----

<script type="text/javascript">

        function audit_options(selected_audit){

jQuery("#reports").load("/audit_report/report?audit_report=" + selected_audit);  

        }

</script>

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

<div id="reports">

</div>

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!

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