I have 2 forms, one using submit_tag and one using image_submit_tag. The controller recognize the params from the first form but not the second.

_form1.html.erb

<%= form_for @micropost do |f| %>
  <p>
    <fieldset>
	<legend> What's your Tip? </legend>
    <%= f.text_field :content, :size => 90 %> <br/>

    <%= f.label "Send this Tip:" %>
    <%= submit_tag "to Guys" %>
    <%= submit_tag "to Girls"%>
    </p>
    </fieldset>
<% end %>

_form2.html.erb

<div id="textfield">
	<%= form_for @micropost do |f| %>
    	<%= f.text_field :content, :size => 90 , :class => "inputtext", :placeholder => "What's worth sharing?"%> <br/>
</div>
<span>You have <span id="charsLeft"></span> chars left.</span>
<script>

$('.inputtext').limit('140','#charsLeft');

</script>
<div id="buttons">
	<%= image_submit_tag("guys_button.png", :name => "commit", :value => "A", :class => "to_guys")%>
	<%= image_submit_tag("girls_button.png", :name => "commit", :value => "B") %>
</div>
	<% end %>

micropost.rb

  def create
    @micropost = Micropost.new(params[:micropost])

    if params["commit"] == "to Guys" or params['value'] == "A"
       @micropost.update_attribute(:to_guys, true)
       flash[:notice] = "to Guys was clicked and the boolean is updated"
    else
       @micropost.update_attribute(:to_guys, false)
    end

    if @micropost.save
      redirect_to(:back)
      flash[:notice] = "Thanks! You have successfully posted this Micropost."
    else
      render :action => 'new'
      flash[:notice] = "Something went wrong. You're Micropost wasn't created"
    end
  end

view.html.erb

<p><%= micropost.content %> + 
<!- using the value below just to see if it worked-->
<%= micropost.to_guys%> </p>