Allow to save multiple tag categories in chargeback controller

@edit[:cb_assign][:tags] as you can see in
code(@edit[:cb_assign][cb_assign_key]) is bringing
selected chargeback rates for tags in selected tag category which is
stored in @edit[:new][:cbtag_cat]

to keep selected chargeback rates for any count of tag categories
we need to extend @edit[:cb_assign][:tags]  to
@edit[:cb_assign][:tags] [category_id]  and this hash can
keep multiple chargeback rates across any count of
tag categories.

we need to update code when chargeback rate is
selected (  in method cb_assign_params_to_edit called
controller action cb_assign_field_changed) and then
when we want to save this selection of chargeback rates
in cb_assign_update.

app/controllers/chargeback_controller.rb

@@ -605,7 +605,8 @@ def cb_rate_set_record_vars
   def cb_assign_set_record_vars
     if @edit[:new][:cbshow_typ].ends_with?("-tags")
       @edit[:set_assignments] = []
-      @edit[:cb_assign][:tags].each do |id, _tag|
+      assigned_rates_from_all_categories = @edit[:cb_assign][:tags].values.reduce({}, :merge)
+      assigned_rates_from_all_categories.each_key do |id|
         key = "#{@edit[:new][:cbshow_typ]}__#{id}"
         if !@edit[:new][key].nil? && @edit[:new][key] != "nil"
           temp = {
@@ -734,9 +735,10 @@ def get_categories_all
   end
 
   def get_tags_all(category)
-    @edit[:cb_assign][:tags] = {}
+    @edit[:cb_assign][:tags] ||= {}
+    @edit[:cb_assign][:tags][category] ||= {}
     classification = Classification.find_by_id(category.to_s)
-    classification.entries.each { |e| @edit[:cb_assign][:tags][e.id.to_s] = e.description } if classification
+    classification.entries.each { |e| @edit[:cb_assign][:tags][category][e.id.to_s] = e.description } if classification
   end
 
   DEFAULT_CHARGEBACK_LABELS = ["com.redhat.component"].freeze
@@ -794,16 +796,16 @@ def get_cis_all
     end
   end
 
-  def cb_assign_params_to_edit(cb_assign_key)
-    return unless @edit[:cb_assign][cb_assign_key]
+  def cb_assign_params_to_edit(cb_assign_key, tag_category_id = nil)
+    current_assingments = cb_assign_key == :tags ? @edit[:cb_assign][cb_assign_key].try(:[], tag_category_id) : @edit[:cb_assign][cb_assign_key]
 
-    @edit[:cb_assign][cb_assign_key].each do |id, _ci|
+    return unless current_assingments
+    current_assingments.each_key do |id|
       key = "#{@edit[:new][:cbshow_typ]}__#{id}"
       @edit[:new][key] = params[key].to_s if params[key]
     end
   end
 
-
   # Get variables from edit form
   def cb_assign_get_form_vars
     @edit[:new][:cbshow_typ] = params[:cbshow_typ] if params[:cbshow_typ]
@@ -814,7 +816,7 @@ def cb_assign_get_form_vars
 
     if @edit[:new][:cbshow_typ].ends_with?("-tags")
       get_categories_all
-      get_tags_all(params[:cbtag_cat]) if params[:cbtag_cat]
+      get_tags_all(params[:cbtag_cat].to_i) if params[:cbtag_cat]
     elsif @edit[:new][:cbshow_typ].ends_with?("-labels")
       get_docker_labels_all_keys
       get_docker_labels_all_values(params[:cblabel_key]) unless params[:cblabel_key].blank?
@@ -823,7 +825,7 @@ def cb_assign_get_form_vars
     end
 
     cb_assign_params_to_edit(:cis)
-    cb_assign_params_to_edit(:tags)
+    cb_assign_params_to_edit(:tags, @edit[:new][:cbtag_cat].try(:to_i))
     cb_assign_params_to_edit(:docker_label_values)
   end
 

app/views/chargeback/_cb_assignments.html.haml

@@ -90,7 +90,7 @@
               %th= _('Name')
               %th= _('Rate')
           %tbody
-            - @edit[:cb_assign][:tags].invert.sort_by { |a| a.first.downcase }.each do |tag, id|
+            - @edit[:cb_assign][:tags][@edit[:new][:cbtag_cat].to_i].invert.sort_by { |a| a.first.downcase }.each do |tag, id|
               %tr
                 %td
                   = h(tag)