CODEWITHSUNDEEP
ruby-on-railsrubyhelper
Jackson
Jackson

Reputation: 6851

Collection Select Helper in Rails 3

I have a quick question in regards to the collection_select helper in Rails 3.

I would like to create a drop down field whereby a user can select a country from a list.

My code currently looks something like this: 

<%= collection_select(:country,:id,SyncedCountry.order('name ASC'),:name,:name,{},{:class => "input-xlarge"}) %>

When I submit on the page I see something like this in the params for country: 

"country"=>{"id"=>"Antilles"}

What I really want is the id of the country selected in the drop-down and not in a hash format. So the result would be more like:

"country"=> 1 (the id of a country selected)

Any ideas?

Upvotes: 0

Views: 195

Answers (2)

Uri Agassi
Uri Agassi

Reputation: 37409

From the documentation:

collection_select(object, method, collection, value_method, text_method, options = {}, html_options = {}) public ...

The :value_method and :text_methodparameters are methods to be called on each member of collection. The return values are used as the value attribute and contents of each <option> tag, respectively. They can also be any object that responds to call, such as a proc, that will be called for each member of the collection to retrieve the value/text.

So try:

<%= collection_select(:country,:id,SyncedCountry.order('name ASC'),:id,:name,{},{:class => "input-xlarge"}) %>

The example in the documentation looks like this:

Sample usage (selecting the associated Author for an instance of Post, @post):

collection_select(:post, :author_id, Author.all, :id,
  :name_with_initial, prompt: true)

If @post.author_id is already 1, this would return:

<select name="post[author_id]">
  <option value="">Please select</option>
  <option value="1" selected="selected">D. Heinemeier Hansson</option>
  <option value="2">D. Thomas</option>
  <option value="3">M. Clark</option>
</select>

(this will return "author_id"=>"1")

Now, I'm not familiar with your model, but if you are selecting the country of your user, than I think this should work:

    <%= collection_select(:user, :country_id,SyncedCountry.order('name ASC'),:id,:name,{},{:class => "input-xlarge"}) %>

Upvotes: 0

Kirti Thorat
Kirti Thorat

Reputation: 53038

Replace

<%= collection_select(:country,:id,SyncedCountry.order('name ASC'),:name,:name,{},{:class => "input-xlarge"}) %>

with

<%= collection_select(:model_object,:country,SyncedCountry.order('name ASC'),:name,:name,{},{:class => "input-xlarge"}) %>

where model_object is the object passed to form. If its a form for user and your form looks like form_for(@user) then replace :model_object with :user.

So, params would look like "user"=>{"country"=>"Antilles"}, assuming that you are setting country for a user.

Upvotes: 1

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