adding new section

app/models/merged/page.rb

@@ -34,6 +34,15 @@ module Merged
       @@all[@name] = self
     end
 
+    def new_section
+      section_data = Section.build_data
+      index = sections.length
+      section = Section.new(self , index,  section_data)
+      @sections << section
+      @content << section_data
+      section
+    end
+
     def first_template
       @content[0]["template"]
     end
@@ -41,16 +50,16 @@ module Merged
     def move_section_up(section)
       return if sections.length == 1
       return if section.index == 0
-      swap( section , sections[section.index - 1])
+      swap_sections( section , sections[section.index - 1])
     end
 
     def move_section_down(section)
       return if sections.length == 1
       return if section.index == sections.last.index
-      swap( section , sections[section.index + 1])
+      swap_sections( section , sections[section.index + 1])
     end
 
-    def swap( this_section , that_section)
+    def swap_sections( this_section , that_section)
       # swap in the actual objects, index is cached in the objects
       this_old_index = this_section.index
       this_section.set_index( that_section.index )

app/models/merged/section.rb

@@ -25,6 +25,12 @@ module Merged
       end
     end
 
+    def self.build_data
+      data = { "template" => "spacer"}
+      data["id"] = SecureRandom.hex(10)
+      data
+    end
+
     [:template , :card_template , :id , :text , :header, :image].each do |meth|
       define_method(meth) do
         @content[meth.to_s]
@@ -50,6 +56,13 @@ module Merged
       options[option] = value
     end
 
+    def template_style
+      Style.sections[ template ]
+    end
+    def allowed_fields
+      template_style.fields
+    end
+
     def cards?
       ! cards.empty?
     end
@@ -89,8 +102,8 @@ module Merged
     end
 
     def update(key , value)
-      return if key == "id" #not updating that
-      if(! @content[key].nil? )
+      raise "unsuported field #{key} for #{template}" unless allowed_fields.include?(key)
+      if(! @content[key].nil? ) # first setting ok, types not (yet?) specified
         if( @content[key].class != value.class )
           raise "Type mismatch #{key} #{key.class}!=#{value.class}"
         end