Extract methods to get map location in form components

This way changing them will be easier.

app/components/budgets/investments/form_component.html.erb

@@ -46,7 +46,7 @@
 
     <%= render "map_locations/form_fields",
                form: f,
-               map_location: investment.map_location || MapLocation.new,
+               map_location: map_location,
                label: t("budgets.investments.form.map_location"),
                help: t("budgets.investments.form.map_location_instructions") %>
 

app/components/budgets/investments/form_component.rb

@@ -19,4 +19,8 @@ class Budgets::Investments::FormComponent < ApplicationComponent
     def categories
       Tag.category.order(:name)
     end
+
+    def map_location
+      investment.map_location || MapLocation.new
+    end
 end

app/components/proposals/form_component.html.erb

@@ -54,7 +54,7 @@
 
     <%= render "map_locations/form_fields",
                form: f,
-               map_location: proposal.map_location || MapLocation.new,
+               map_location: map_location,
                label: t("proposals.form.map_location"),
                help: t("proposals.form.map_location_instructions") %>
 

app/components/proposals/form_component.rb

@@ -15,4 +15,8 @@ class Proposals::FormComponent < ApplicationComponent
     def categories
       Tag.category.order(:name)
     end
+
+    def map_location
+      proposal.map_location || MapLocation.new
+    end
 end