ruby - Call gravatar_for in Rails Model -


I am trying to call gravatar_for one of my models. (Yes, I realize that it is not strictly MVC, but I have a valid reason to do this which I am not going to). I am trying to include helpers for Gravatar, but I have not been able to know what they are.

By adding this to my class so far does not work: 

  Announcement of the class posted activity & lt; GravatarHelper :: PublicMethods in Newsfeed Activity    
 
 
 Assume that you want to generate an image tag There are some problems to overcome using. Note that the  gravatar_for  method takes a user object as its first argument.   
  Commenting in your  in GravatarHelper :: PublicMethods   class  all the examples  gravatar_for (user, option = {} ) .) Then you will say:  
  alice = user.new () alice.respond_to? (: Gravatar_for) = & gt; Error for true alice.gravatar_ logic: Wrong number of arguments (1 to 0) # (You need to argue - method became zero, but one was expected) alice.gravatar_for (alice) = & gt; "& Lt; img class = \" gravatar \ "alt = \" \ "width = \" 50 \ "height = \" 50 \ "src = \" http://www.gravatar.com/avatar/70375a32ad79987b9bc00cb20f7d1c95? Rating = PG & amp; Amp; Size = 50 \ "/> # (not what we absolutely want)   
 You see, you must supply the  user  object  gravatar_for  The first argument of the method, what do you have to do?  
 1. Use another gem  
 The one that provides a module on it  Self.email  instead of requiring it as a method parameter.  
 2. Apply the self rule  
. And follow it for example.  Maybe << em>  Eno Some train assistants need to be included in the posterified activity   
  & gt; gravatar_url 'github @ deanandadie.net` node method arrowroof:' H 'for the undefined method main: Object ....> Active 'support_support / core_ext / string / output_safety' => true>> ERB :: ULL => object> gt; gravatar_url 'github @ Deanandadie.net` = & gt; "http: // www. Gravatar.com/avatar/fbaf55d6c2618cafe0a759cfe85967e0?rating=PG&size=50 "

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