Allow nil lat and long for space

Author: rsmithlal

app/models/better_together/geography/space.rb

@@ -13,8 +13,8 @@ class Space < ApplicationRecord
       has_many :geospatial_spaces
 
       validates :elevation, numericality: true, allow_nil: true
-      validates :latitude, numericality: { greater_than_or_equal_to:  -90, less_than_or_equal_to:  90 }
-      validates :longitude, numericality: { greater_than_or_equal_to: -180, less_than_or_equal_to: 180 }
+      validates :latitude, numericality: { greater_than_or_equal_to:  -90, less_than_or_equal_to:  90 }, allow_nil: true
+      validates :longitude, numericality: { greater_than_or_equal_to: -180, less_than_or_equal_to: 180 }, allow_nil: true
 
       def self.permitted_attributes(id: false, destroy: false, exclude_extra: false)
         super + %i[longitude latitude elevation]
@@ -24,6 +24,14 @@ def geocoded?
         latitude.present? && longitude.present?
       end
 
+      def latitude= arg
+        super if arg.present?
+      end
+
+      def longitude= arg
+        super if arg.present?
+      end
+
       def to_leaflet_point
         return nil unless geocoded?