A rough first pass at template importing. Only works some of the time…

…, has no error handling, but will partially import as much as possible. [#110]

app/controllers/templates_controller.rb

@@ -136,4 +136,39 @@ def preview
       end
     end
   end
+
+  # PUT /templates/import
+  # Import a template from an XML description and convert it 
+  def import
+    xml_file = params[:xml]
+    image_file = params[:image]
+
+    data = Hash::from_xml(xml_file.read)
+
+    @template = Template.new(:name => data['template']['name'],
+                            :author => data['template']['author'])
+    @template.media.build({:key=>"original", :file => image_file})
+
+    data['template']['field'].each do |field|
+      position = @template.positions.build
+      field.each_pair do |key, value|
+        position.send("#{key}=".to_sym, value) if position.respond_to?("#{key}=".to_sym)
+      end
+      if field.has_key?('name')
+        position.field = Field.where(:name => field['name']).first
+      end
+      if !position.valid?
+        position.destroy
+      end
+    end
+    respond_to do |format|
+      if @template.save
+        format.html { redirect_to(@template, :notice => 'Template was successfully created.') }
+        format.xml  { render :xml => @template, :status => :created, :location => @template }
+      else
+        format.html { render :action => "new" }
+        format.xml  { render :xml => @template.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
 end

app/models/position.rb

@@ -3,8 +3,12 @@ class Position < ActiveRecord::Base
   belongs_to :template
 
   #Validations
-  validates_uniqueness_of :field_id, :scope => :template_id
-
+  validates :field, :presence => true, :associated => true
+  validates :right, :numericality => {:greater_than_or_equal_to => -1, :less_than_or_equal_to => 1}
+  validates :left, :numericality => {:greater_than_or_equal_to => -1, :less_than_or_equal_to => 1}
+  validates :top, :numericality => {:greater_than_or_equal_to => -1, :less_than_or_equal_to => 1}
+  validates :bottom, :numericality => {:greater_than_or_equal_to => -1, :less_than_or_equal_to => 1}
+
   # Compute the width of the position block.
   # A Concerto-1 style attribute, figuring out
   # the total width of the element.
@@ -17,15 +21,15 @@ def width
   # A Concerto-1 style accessor, mainly used
   # for importing templates.
   def width=(size)
-    self.right = left + size
+    self.right = left + size.to_f
   end
 
   # Enabling the height to be set for a position.
   # The bottom is adjusted relative to the top.
   # A Concerto-1 style accessor, mainly used
   # for importing templates.
   def height=(size)
-    self.bottom = top + size
+    self.bottom = top + size.to_f
   end
 
   # Compute the height of the position block.

app/models/template.rb

@@ -1,7 +1,7 @@
 class Template < ActiveRecord::Base
   has_many :screens
-  has_many :media, :as => :attachable
-  has_many :positions
+  has_many :media, :as => :attachable, :dependent => :destroy
+  has_many :positions, :dependent => :destroy
 
   accepts_nested_attributes_for :media
 

app/views/templates/new.html.erb

@@ -3,3 +3,16 @@
 <%= render 'form' %>
 
 <%= link_to 'Back', templates_path %>
+
+<h1>Import template</h1>
+<%= form_tag(import_templates_path, {:multipart => true}) do %>
+  <div class="field">
+    <%= label_tag :xml, 'XML' %><br />
+    <%= file_field_tag :xml %>
+  </div>
+  <div class="field">
+    <%= label_tag :image %><br />
+    <%= file_field_tag :image %>
+  </div>
+  <%= submit_tag "Import Template" %>
+<% end %>

app/views/templates/show.html.erb

@@ -12,8 +12,8 @@
   <b>Is hidden:</b>
   <%= @template.is_hidden %>
 </p>
-
-<%= link_to "Media", @template.media.original.first %>
+<%= link_to "Preview", preview_template_path(@template) %> | 
+<%= link_to "Media", @template.media.original.first %> | 
 
 <%= link_to 'Edit', edit_template_path(@template) %> |
 <%= link_to 'Back', templates_path %>

config/routes.rb

@@ -12,6 +12,9 @@
     member do
       get :preview
     end
+    collection do
+      post :import
+    end
   end
 
   resources :screens do