CODEWITHSUNDEEP
ruby-on-rails
Becca
Becca

Reputation: 145

Can't pass through variable from collection select in rails

I'm trying to use a collection select and from there go to my user_show page, but I can't seem to figure out how to send the selected variable through to be displayed.

Here is my current code:

<%= form_tag user_path(:id), :method => :post do %>
  <%= collection_select(:user, :id, User.all, :id, :name) %>
  <button type="submit">Sign In</button>
<% end %>

This is the closest I've gotten, but it is reading the :id as id. What is the correct way to do this?

Upvotes: 1

Views: 486

Answers (2)

K M Rakibul Islam
K M Rakibul Islam

Reputation: 34336

Your collection_select should be like this (with explanation of each field):

collection_select(
    :user, # field namespace
    :user_id, # field name
    # result of these two params will be: <select name="user[user_id]">

    # then you should specify some collection or array of rows.
    # In your example it is:
    User.all,

    # then you should specify methods for generating options
    :id, # this is name of method that will be called for every row, result will be set as key
    :name, # this is name of method that will be called for every row, result will be set as value

# as a result, every option will be generated by the following rule:
# 'user' is an element in the collection or array
)

So, change your collection_select to this:

<%= collection_select(:user, :user_id, User.all, :id, :name) %>

Upvotes: 2

dimakura
dimakura

Reputation: 7655

You probably need:

<%= form_tag user_path(:id), :method => :post do %>
  <%= collection_select(:user, :user_id, User.all, :id, :name) %>
  <button type="submit">Sign In</button>
<% end %>

Upvotes: 1

Related Questions