Rails select helper - Default selected value, how?

Question

Here is a piece of code I\'m using now:

<%= f.select :project_id, @project_select %>

How to modify it to make its default value equal

Answer 1

Try this:

    <%= f.select :project_id, @project_select, :selected => f.object.project_id %>

Answer 2

Rails 3.0.9

select options_for_select([value1, value2, value3], default)

Answer 3

if params[:pid] is a string, which if it came from a form, it is, you'll probably need to use

params[:pid].to_i  

for the correct item to be selected in the select list

Answer 4

<%= f.select :project_id, options_from_collection_for_select(@project_select,) %>

Answer 5

This should work for you. It just passes {:value => params[:pid] } to the html_options variable.

<%= f.select :project_id, @project_select, {}, {:value => params[:pid] } %>

Answer 6

Its already explained, Will try to give an example

let the select list be

select_list = { eligible: 1, ineligible: 0 }

So the following code results in

<%= f.select :to_vote, select_list %>

<select name="to_vote" id="to_vote">
  <option value="1">eligible</option>
  <option value="0">ineligible</option>
</select>

So to make a option selected by default we have to use selected: value.

<%= f.select :to_vote, select_list, selected: select_list.can_vote? ? 1 : 0 %>

if can_vote? returns true it sets selected: 1 then the first value will be selected else second.

select name="driver[bca_aw_eligible]" id="driver_bca_aw_eligible">
  <option value="1">eligible</option>
  <option selected="selected" value="0">ineligible</option>
</select>

if the select options are just a array list instead of hast then the selected will be just the value to be selected for example if

select_list = [ 'eligible', 'ineligible' ]

now the selected will just take

<%= f.select :to_vote, select_list, selected: 'ineligible' %>