select tag in rails 3

Question

I am trying to create a drop down menu and assign an onchange event on it in rails3. how would I do that.

<select name="" class="wy_inputs_selects sround">
       <% @domains.each do |record| %>
  <option value="<%= record.name %>.<%= record.tld %>" ><%= record.name %>.<%= record.tld %></option>
           <%end%>
</select>

I am converting the above code into ruby like

<%= select_tag "",:class=>'wy_inputs_selects sround',options_from_collection_for_select(@domains,"name",

But I am stuck with how to get the record.tld and record.name using the above format

Francois · Accepted Answer · 2011-12-01 12:57:24Z

2

try this

<select name="" class="wy_inputs_selects sround">

<% @domains.each do |record| %>
 <% @name_tld = record.name.to_s + "." + record.tld.to_s %>
 <option value="#{@name_tld}" ><%= @name_tld %></option>
 <% end %>

</select>

you can also you the rails select helper method like so (this is used inside a form)

example 1

<%= form_for @dates,:remote => true do |f| %>
    <%= f.date_select :booking_date,:onchange => "this.form.submit();" %>
<% end %>

example 2 (with default value)

<%= form_for(@image),:remote => true do |f| %>
    <%= f.select :album_id, @albums_all.map {|m| [m.name, m.id] }, :selected => @album_id %> <!-- default value, current album -->
<% end %>

remember to include this in your views/layouts/application.html.erb file, so rails will use ajax

<%= javascript_include_tag :defaults %>
<%= csrf_meta_tag %>

edited Dec 1, 2011 at 12:57

answered Dec 1, 2011 at 8:44

Francois

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7 Comments

rubyist Over a year ago

SO can I assign the onchange event handler to select tag like {:onchange => "show_spinner('"+"#{record.domainkey}"+"');"}

Francois Over a year ago

yes you can use it like this, select_tag :variable, options_from_collection_for_select(:all, :id, :name), :onchange => 'your_onchange_handler()' (please vote if it helps :) )

rubyist Over a year ago

so wot does this :all :id and :name variables contain??I was trying to write the above code as <%= select_tag "",:class=>'wy_inputs_selects sround',options_from_collection_for_select(@domains,"name") But got stuck with these options

rubyist Over a year ago

How can I implement the above code in ruby using select_tag :variable, options_from_collection_for_select(:all, :id, :name), :onchange => 'your_onchange_handler()'.. I am just learning ruby. Please help

rubyist Over a year ago

Basically I am trying to implement <%= select_tag "",:class=>'wy_inputs_selects sround',options_from_collection_for_select(@domains.collect|records|,[records.name.records.tld,records.name.records.tld]))

|

nol · Accepted Answer · 2011-12-01 08:39:45Z

0

I would define the name in the model for record (record.rb or domain.rb, whatever the name of your model is), something like:

def detail_name
  return self.name+'.'+self.tld
end

Then call the detail_name from within the select tag.

answered Dec 1, 2011 at 8:39

nol

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1 Comment

rubyist Over a year ago

In my controller I have done as @domains = Domains.by_userid(:key => session[:wy_main_userid]).So @ domains would contain name and tld values which I need to get in select tag in view page.

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