I am trying to use a nested form but keep getting this error when saving -
uninitialized constant User::Userplan
Here is my model code -
User
class User < ActiveRecord::Base
has_many :userplans
has_many :plans, :through => :userplans
accepts_nested_attributes_for :userplans
UserPlan
class UserPlan < ActiveRecord::Base
belongs_to :plan
belongs_to :user
Plan
class Plan < ActiveRecord::Base
has_many :userplans
has_many :users, :through => :userplans
Form
<%= form_for(@user) do |f| %>
<%= hidden_field_tag "user[userplans][plan_id]", 2 %>
<%= f.text_field :first_name %></p>
I know using a hidden_field_tag is wrong but im not sure of a better way
Thanks for any help!
activerecord (3.0.3) lib/active_record/associations/association_proxy.rb:260:in raise_on_type_mismatch'
activerecord (3.0.3) lib/active_record/associations/association_collection.rb:352:in
block in replace'
activerecord (3.0.3) lib/active_record/associations/association_collection.rb:352:in each'
activerecord (3.0.3) lib/active_record/associations/association_collection.rb:352:in
replace'
activerecord (3.0.3) lib/active_record/associations.rb:1524:in block in collection_accessor_methods'
activerecord (3.0.3) lib/active_record/base.rb:1559:in
block in attributes='
activerecord (3.0.3) lib/active_record/base.rb:1555:in each'
activerecord (3.0.3) lib/active_record/base.rb:1555:in
attributes='
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dispatch'
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block in call'
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railties (3.0.3) lib/rails/rack/logger.rb:13:in call'
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activesupport (3.0.3) lib/active_support/cache/strategy/local_cache.rb:72:in call'
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rack (1.2.1) lib/rack/content_length.rb:13:in call'
rack (1.2.1) lib/rack/handler/webrick.rb:52:in
service'
/Users/joshcrowder/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:111:in service'
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run'
/Users/joshcrowder/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
I think your issue is with the naming of your associations. Since your UserPlan
model is CamelCased <- like that, Rails 'tabelizes' the name of it into :user_plans
, not :userplan
. Your error, as you can see, stems from Rails not being able to find Userplan
, when it should be looking for UserPlan
.
User:
class User < ActiveRecord::Base
has_many :user_plans
has_many :plans, :through => :user_plans
accepts_nested_attributes_for :user_plans
Plan:
class Plan < ActiveRecord::Base
has_many :user_plans
has_many :users, :through => :user_plans
View:
<%= form_for(@user) do |f| %>
<%= hidden_field_tag "user[user_plans][plan_id]", 2 %>
<%= f.text_field :first_name %></p>
With regards to the hidden_field_tag
, what exactly are you trying to do? Perhaps you should open another question?
Hope this helps!
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