Ruby error : undefined method `any ' for 30:Fixnum (NoMethodError) - ruby-on-rails

Question

I am trying to list the product reviews in spree back end. But getting the error 'undefined method any '. I am new to ruby,please help me to solve this issue.
Thanks in Advance.
Index.html.erb:
<% if #reviews.any? %>
<table class="index">
<colgroup>
<col style="width: 25%;">
<col style="width: 10%;">
<col style="width: 10%;">
<col style="width: 20%;">
<col style="width: 15%;">
<col style="width: 17%;">
</colgroup>
<thead>
<tr>
<th><%= Spree.t('product') %></th>
<th><%= Spree::Review.human_attribute_name(:rating) %></th>
<th><%= Spree.t('feedback') %></th>
<th><%= Spree::Review.human_attribute_name(:user) %></th>
<th><%= Spree::Review.human_attribute_name(:created_at) %></th>
</tr>
</thead>
<tbody>
<%- #reviews.each do |review| -%>
<tr id="<%= dom_id review %>">
<td>
<% if review.product %>
<%= link_to review.product.name, product_path(review.product) %>
<% end %>
</td>
<td class="align-center">
<%= txt_stars(review.rating) %>
</td>
<td class="align-center">
<%= link_to "(#{review.feedback_stars}/#{review.feedback_reviews.size})", admin_review_feedback_reviews_path(review) %>
</td>
<td class="align-center">
<%= review.user_id ? link_to(review.user.try(:email), [:admin, review.user]) : Spree.t(:anonymous) %></p>
<p><%= Spree::Review.human_attribute_name(:ip_address) %>: <%= review.ip_address ? link_to(review.ip_address, "http://whois.domaintools.com/#{review.ip_address}") : '-' %></p>
</td>
<td class="align-center">
<%= l review.created_at, :format => :short %>
</td>
<td class="actions">
<%= link_to_with_icon 'check', Spree.t('approve'), approve_admin_review_url(review), :no_text => true, class: 'approve' unless review.approved %>
<%= link_to_edit review, :no_text => true, :class => 'edit' %>
<%= link_to_delete review, :no_text => true %>
</td>
</tr>
<% end %>
</tbody>
</table>
<% else %>
<div class="no-objects-found">
<%= Spree.t(:no_results) %>
</div>
<% end %>
The above shown is the index.html.erb file , where the listing and ransack search is done.
Model File : review.rb
class Spree::Review < ActiveRecord::Base
belongs_to :product, touch: true
belongs_to :user, :class_name => Spree.user_class.to_s
has_many :feedback_reviews
after_save :recalculate_product_rating, :if => :approved?
after_destroy :recalculate_product_rating
validates :name, presence: true
validates :review, presence: true
validates :rating, numericality: { only_integer: true,
greater_than_or_equal_to: 1,
less_than_or_equal_to: 5,
message: Spree.t('you_must_enter_value_for_rating') }
default_scope { order("spree_reviews.created_at DESC") }
scope :localized, ->(lc) { where('spree_reviews.locale = ?', lc) }
scope :most_recent_first, -> { order('spree_reviews.created_at DESC') }
scope :oldest_first, -> { reorder('spree_reviews.created_at ASC') }
scope :preview, -> { limit(Spree::Reviews::Config[:preview_size]).oldest_first }
scope :approved, -> { where(approved: true) }
scope :not_approved, -> { where(approved: false) }
scope :default_approval_filter, -> { Spree::Reviews::Config[:include_unapproved_reviews] ? all : approved }
def feedback_stars
return 0 if feedback_reviews.size <= 0
((feedback_reviews.sum(:rating) / feedback_reviews.size) + 0.5).floor
end
def set_search
#search=Product.search(params[:q])
end
def recalculate_product_rating
self.product.recalculate_rating if product.present?
end
end
reviews_controller.rb
class Spree::Admin::ReviewsController < Spree::Admin::ResourceController
helper Spree::ReviewsHelper
def index
#reviews = collection
end
def approve
r = Spree::Review.find(params[:id])
if r.update_attribute(:approved, true)
flash[:notice] = Spree.t("info_approve_review")
else
flash[:error] = Spree.t("error_approve_review")
end
redirect_to admin_reviews_path
end
def edit
if #review.product.nil?
flash[:error] = Spree.t("error_no_product")
redirect_to admin_reviews_path and return
end
end
private
def collection
params[:q] ||= {}
#search = Spree::Review.ransack(params[:q])
#collection = #search.result.includes([:product, :user, :feedback_reviews]).page(params[:page]).per(params[:per_page])
end
end

Answer 1

It looks like the important code is in your comment on an answer, where it is very difficult to read.
I think you have assigned the variable collection with an integer id, and assigned the result if the database lookup to #collection (which is a different variable)
So to fix it you could change the index action to
#reviews = #collection

Answer 2

any works with array on and your #reviews are not an array. Please check #reviews object. It should be array.