Refactoring

git-svn-id: https://dev.finn.de/svn/cockpit/branches/reporting_merge@1269 7926756e-e54e-46e6-9721-ed318f58905e

app/controllers/cost_reports_controller.rb

@@ -1,6 +1,6 @@
 class CostReportsController < ApplicationController
   before_filter :find_optional_project, :only => [:index]
-  before_filter :set_query, :only => [:index]
+  before_filter :query, :only => [:index]
 
   helper :reporting
   include ReportingHelper
@@ -9,11 +9,6 @@ class CostReportsController < ApplicationController
     render :layout => !request.xhr?
   end
 
-  def set_query
-    @query = query
-    @walker = walker(@query)
-  end
-  
   ##
   # Determines if the request contains filters to set
   def set_filter?
@@ -21,47 +16,46 @@ class CostReportsController < ApplicationController
   end
 
   ##
-  # Determines whether the session-saved query can to be used
-  def session_query?
-    !session[:cost_query].nil?
+  # Find a query to search on and put it in the session
+  def query_parameters    
+    filters = http_query_parameters if set_filter?
+    filters ||= session[:cost_query]
+    filters ||= default_query_parameters
+    session[:cost_query] = filters
   end
   
-  # FIXME: Remove € symbol
-  def walker(query)
-    walker = CostQuery::Walker.new(query)
-    walker
+  ##
+  # Extract active filters from the http params
+  def http_query_parameters    
+    params[:fields].inject({}) do |hash, field|
+      hash[:operators][field] = params[:operators][field]
+      hash[:values][field] = params[:values][field]
+    end
   end
   
   ##
-  # Find a query to search on and put it in the session
-  def query_params
-    filters = session[:cost_query] if session_query?
-    if set_filter?
-      filters = {}
-      filters[:operators] = Hash[*params[:operators].select do |filter, op|
-        params[:fields].include? filter.to_s
-      end.flatten]
-      filters[:values] = params[:values]
-    end
-    filters ||= {:operators => {:user_id => "=", :tweek => "="},
+  # Set a default query to cut down initial load time
+  def default_query_parameters
+    hash = {:operators => {:user_id => "=", :tweek => "="},
       :values => {:user_id => [User.current.id], :tweek => [Date.today.cweek]}}
-    session[:cost_query] = filters    
-    filters
+    if @project
+      hash[:operators].merge! :project_id => "="
+      hash[:values].merge! :project_id => [@project.id]
+    end
+    hash
   end
 
   ##
   # Build the query from the current request and save it to 
   # the session.
   def query
-    filters = query_params
-    CostQuery.new.tap do |q|
+    filters = query_parameters
+    @query = CostQuery.new.tap do |q|
       filters[:operators].each do |filter, operator|        
-        unless filters[:values][filter].nil?
         q.filter(filter.to_sym,
         :operator => operator,
         :values => filters[:values][filter])          
       end
-      end
     end.
     column(:tweek).column(:tyear).
     row(:project_id).row(:user_id)

app/models/cost_query.rb

@@ -20,6 +20,10 @@ class CostQuery < ActiveRecord::Base
     @transformer ||= CostQuery::Transformer.new self
   end
   
+  def walker
+    @walker ||= CostQuery::Walker.new self
+  end
+
   def add_chain(type, name, options)
     chain type.const_get(name.to_s.camelcase), options
     @transformer, @table = nil, nil

app/views/cost_reports/_cost_report_table.rhtml

@@ -17,7 +17,6 @@
   walker.for_cell do |result|
     "<td>#{result.real_costs} €</td>"
   end
-  
 %>
 
 <table style='text-align: center' border='1'>

app/views/cost_reports/index.rhtml

@@ -38,4 +38,4 @@
 <% end %>
 
 <h1>Die sch&ouml;ne Tabelle:</h1>
-<%= render :partial => "cost_report_table", :locals => {:query => @query, :walker => @walker} %>
+<%= render :partial => "cost_report_table", :locals => {:query => @query, :walker => @query.walker} %>