device.rb

class Device < ActiveRecord::Base
  validates :device_type_id, :presence => true
  validates :device_status_id, :presence => true
  validates :serial_number, :presence => true

  belongs_to :device_type
  belongs_to :device_status
  has_one :device_test, :dependent => :destroy
  has_one :device_location, :dependent => :destroy
  has_many :device_problem_statuses, :through => :device_problem
  has_many :device_problems, :order => 'created_at DESC', :dependent => :destroy
  has_many :audits, :dependent => :destroy

  accepts_nested_attributes_for :device_problems, :device_location, :device_test, :allow_destroy => true
end

device_location.rb

class DeviceLocation < ActiveRecord::Base
  belongs_to :device
  belongs_to :location
  has_one :patient
end

ERROR

NoMethodError in Devices#locations

Showing /home/russellpruitt/projects/inventory/app/views/devices/locations.html.erb where line #3 raised:

undefined method `device' for #<ActiveRecord::Relation:0xa6d4fd4>

Extracted source (around line #3):

1: <h1>Devices for: <%= @location.location_name %></h1>
2: 
3: <% @location.location_devices %>
4: <br />

Rails.root: /home/russellpruitt/projects/inventory
Application Trace | Framework Trace | Full Trace

app/models/location.rb:21:in `location_devices'
app/views/devices/locations.html.erb:3:in `_app_views_devices_locations_html_erb__908324986_90032260'

Request

Parameters:

{"id"=>"1"}

Show session dump

Show env dump
Response

Headers:

None

location.rb

class Location < ActiveRecord::Base
  validates :location_type_id, :presence => true
  validates :location_name, :presence => true
  validates :location_street1, :presence => true
  validates :location_city, :presence => true
  validates :location_state, :presence => true
  validates :location_zip, :presence => true
  validates :location_contact, :presence => true
  validates :par_level_event, :presence => true
  validates :par_level_mct, :presence => true
  validates :alert_amount, :presence => true
  
  belongs_to :location_type
  belongs_to :practice
  has_many :location_alert_contacts, :dependent => :destroy
  has_many :device_locations
  
  accepts_nested_attributes_for :device_locations, :location_type, :practice, :location_alert_contacts
  
  def location_devices
    DeviceLocation.Device.all
  end
end