Add example of using dates in the demos

extras/rubymotion/app/controllers/responses_view_controller.rb

@@ -77,11 +77,11 @@ def numberOfSectionsInTableView(tableView)
   end
 
   def tableView(tableView, titleForFooterInSection:section)
+    str = ""
     if @post.responses.empty?
-      "There are no responses to this post.\nSay something!"
-    else
-      nil
+      str += "There are no responses to this post.\nSay something!\n\n"
     end
+    str += "Posted on #{@post.createdAt.strftime("%m/%d/%y")}"
   end
 
   def tableView(tableView, titleForHeaderInSection:section)

extras/rubymotion/app/models/post.rb

@@ -1,19 +1,22 @@
 class Post < NSRailsModel
-  attr_writer :author, :content, :responses
+  attr_writer :author, :content, :responses, :createdAt
 
   # Right now there's a bug in RubyMotion that requires you to define getter methods manually
   # Soon you'll be able just do "attr_accessor" above instead of this
   def author; @author; end  
   def content; @content; end
-  def responses; @responses; end  
+  def responses; @responses; end
+  def createdAt; @createdAt; end
 
 
   # Define the NSRailsSync macro as usual, only as a class method returning a string
-  # Remember that * is not supported in the Ruby environment, and has_many relationships have to be indicated with '-m'
+  # Remember that in the Ruby environment, * is not supported, has_many relationships have to be indicated with '-m', and dates must declared with NSDate
   def self.NSRailsSync
-    'author, content, responses:Response -m'
+    'author, content, createdAt:NSDate, responses:Response -m'
   end
 
-  # For responses, since it's an array, the ":" is required to define an association with another class.
+  # For responses, since it's an array, -m is required (has-many). The ":" is required to define an association with another class.
   # In this case, the class of objects we want to fill our responses array with is Response (must be an NSRailsModel subclass)
+
+  # For createdAt, :NSDate makes it so NSRails will automatically convert to a formatted date object (string) when sending to Rails, and return a Time object when retrieving. Handy.
 end

nsrails/demo/Controllers/ResponsesViewController.m

@@ -131,12 +131,14 @@ - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger
 }
 
 - (NSString *) tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section
-{
-	if (post.responses.count == 0)
-	{
-		return @"There are no responses to this post.\nSay something!";
-	}
-	return nil;
+{	
+	NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
+	[formatter setDateFormat:@"MM/dd/yy"];
+	NSString *timestamp = [@"Posted on " stringByAppendingString:[formatter stringFromDate:post.createdAt]];
+
+	NSString *encouragement = @"There are no responses to this post.\nSay something!\n\n";
+
+	return [NSString stringWithFormat:@"%@%@", (post.responses.count == 0) ? encouragement : @"", timestamp];
 }
 
 - (NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

nsrails/demo/Models/Post.h

@@ -12,5 +12,6 @@
 
 @property (nonatomic, strong) NSMutableArray *responses;
 @property (nonatomic, strong) NSString *author, *content;
+@property (nonatomic, strong) NSDate *createdAt;
 
 @end

nsrails/demo/Models/Post.m

@@ -9,8 +9,8 @@
 #import "Post.h"
 
 @implementation Post
-@synthesize content, author, responses;
-NSRailsSync(content, author, responses:Response)
+@synthesize content, author, createdAt, responses;
+NSRailsSync(content, author, createdAt, responses:Response)
 
 // The NSRailsSync above will tell NSRails to sync up content, author, and responses w/Rails
 // Could also be done like: