How to fix the error "undefined method" in my Rails Geocoder? - ruby-on-rails

Question

My code is working in console but not in App
➜ Meet-and-Eat git:(master) ✗ rails c
Running via Spring preloader in process 15789
Loading development environment (Rails 5.2.2)
2.5.3 :001 > i = ["10 Palmerston Street", "DERBY"]
=> ["10 Palmerston Street", "DERBY"]
2.5.3 :002 > result = Geocoder.search("#{i[0]}, #{i[1]}").first.coordinates
=> [52.9063415, -1.4937474]
My code :
<% #places = [] %>
<% #placesCoordinations = [] %>
<% #information.each do |i| %>
<% #places.push([i.address1, i.town, i.postcode, information_path(i)]) %>
<% end %>
<% #places.each do |i| %>
<% result = Geocoder.search("#{i[0]}, #{i[1]}").first.coordinates %>
<% #placesCoordinations.push(result) %>
<% end %>
Error :
NoMethodError in Information#full_map_adresses.
Showing /Users/mateuszstacel/Desktop/Meet-and-Eat/app/views/information/full_map_adresses.html.erb where line #10 raised:
undefined method `coordinates' for nil:NilClass
<% #places.each do |i| %>
<% result = Geocoder.search("#{i[0]}, #{i[1]}").first.coordinates%> //this line is breaking my app
<% #placesCoordinations.push(result) %>
<% end %>
But if I use only single location or postcode or street address that work but i need to use both of them to be more precision.
<% #places = [] %>
<% #placesCoordinations = [] %>
<% #information.each do |i| %>
<% #places.push([i.address1, i.town, i.postcode, information_path(i)]) %>
<% end %>
<% #places.each do |i| %>
<% result = Geocoder.search("#{i[2]}").first.coordinates %>
<% #placesCoordinations.push(result) %>
<% end %>

Answer 1

The error message undefined methodcoordinates' for nil:NilClassindicates that theGeocoder.search("#{i[0]}, #{i[1]}")itself is successful, butGeocoder.search("#{i[0]}, #{i[1]}").firstsimply returnsnil`.
It seems like your #information array contains at least one address that cannot be resolved. There might be many reasons: Perhaps there is just a typo in the address or it is a very small village or an address in a country which is not supported by the service you are using.
Tip to debug: Change your code to show what it passes to the method and if there were any results. Something like this might help:
<% #places.each do |i| %>
Address string: <%= "#{i[0]}, #{i[1]}" %>
<% result = Geocoder.search("#{i[0]}, #{i[1]}").first %>
Result: <%= result.present? %>
<% #placesCoordinations.push(result.coordinates) if result.present? %>
<% end %>
Furthermore: I suggest moving code like this to a model, the controller or a helper. It feels like this doesn't belong in an ERB view.

Answer 2

Finally that work !
Inside of the model :
class Information < ApplicationRecord
geocoded_by :address
after_validation :geocode
def address
[address1, address2, town, postcode].compact.join(", ")
end
end
then in terminal run command :
rake geocode:all CLASS=Information SLEEP=0.25 BATCH=100