Rails create method failing - ruby-on-rails

Question

I'm trying to create "group posts" that are connected to a "user group" and a user. The first line of my create method is failing with this error:
Couldn't find UserGroup with 'id'=
I've been looking at blog building tutorials thinking that my "group post" is acting like a comment but instead of being attached to an article it's attached to a "user group".
I'm pretty new to Rails so it could be simply a syntax issue. Any advise would be appreciated.
Here is the group post create method:
def create
#user_group = UserGroup.find(params[:user_group_id])
#group_post = current_user.group_posts.new(group_post_params)
if #group_post.save
respond_to do |format|
format.html {redirect_to user_group_path(#user_group), notice: "Group Post created!"}
end
else
redirect_to user_group_path(#user_group), notice: "Something went wrong."
end
end
private
def group_post_params
params.require(:group_post).permit(:content, :post_type, :user_group_id)
end
Here is the user group model:
class UserGroup < ActiveRecord::Base
has_many :group_members, dependent: :destroy
has_many :members, through: :group_members, source: :user
has_many :group_posts, dependent: :destroy
validates :name, presence: true, length: {minimum: 5}
validates :searchable, presence: true, length: {minimum: 5}
def owners
members.includes(:group_members).where('group_members.owner = ?', true)
end
def regular_users
members.includes(:group_members).where('group_members.owner = ?', false)
end
end
Here is the group post model:
class GroupPost < ActiveRecord::Base
include PublicActivity::Model
belongs_to :user
belongs_to :user_group
validates :user_id, :presence => true
validates :content, :presence => true
end
And finally the routes:
Rails.application.routes.draw do
devise_for :users, controllers: {registrations: 'registrations'}
root 'pages#home'
resources :users, only: [:index, :show]
resources :friendships, only: [:create, :destroy, :accept] do
member do
put :accept
end
end
resources :posts, only: [:create, :edit, :update, :destroy]
resources :group_posts, only: [:create, :edit, :update, :destroy]
resources :activities, only: [:index] do
member do
put "upvote" =>"activities#upvote"
end
end
resources :user_groups do
resources :group_posts
resources :group_members
end
end
Here is the form partial submitting the group post:
<div class="posts-panel">
<%= form_for(#group_post) do |f| %>
<%= render 'partials/error_messages', object: f.object %>
<div class="form-group">
<%= f.text_area :content, placeholder: "Compose new post...", class: "form-control" %>
</div>
<div class="form-group">
<%= f.select :post_type, [['Request', 'request'],['Report', 'report']], {}, {class: "form-control"} %>
</div>
<div class="form-group">
<%= hidden_field_tag :user_group_id, #usergroup.id %>
<%= f.submit "Post", class: "btn btn-primary" %>
</div>
<% end %>
</div>
Complete Params:
{"utf8"=>"✓", "authenticity_token"=>"thkRQYNcl+ySSoWIE83V22DEqYdttg+TF4coFsmasXkt2mylgB2YG/vAl2KYRey/djTqL5iNSTIyWJpsSWyCQQ==", "group_post"=>{"content"=>"This is it", "post_type"=>"prayer"}, "user_group_id"=>"1", "commit"=>"Post", "controller"=>"group_posts", "action"=>"create"}

Answer 1

The user_group_id was not inside the params hash. Adding the following line to the create method solved the issue:
#group_post.user_group = #user_group