Why isn't Ruby on Rails correctly generating the 'notice' HTML?

Question

The embedded ruby code in my view is...

<p id="notice"><%= notice %></p>

but when the URL reads...

http://0.0.0.0:3000/projects/3?notice=Project+was+successfully+created

the generated HTML is...

<p id="notice"></p>

I'm expecting it to read...

<p id="notice">Project was successfully created</p>

What gives?

EDIT: Here's my controller code just to ease any curiosity..

def create
    @project = Project.new(params[:project])

    respond_to do |format|
      if @project.save
        format.html { redirect_to(:action => "show", :id => @project, :notice => 'Project was successfully created.') }
        format.xml  { render :xml => @project, :status => :created, :location => @project }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @project.errors, :status => :unprocessable_entity }
      end
    end
  end

Thanks so much!

Answer 1

Try assigning the value in the controller with something like

@notice_text = params[:notice]

and then you can use something like

<p id="notice><%= @notice_text %></p>

in your view.

You may wish to read the answer to this question which deals more explicitly with passing variables through URL query strings.

Answer 2

Your code is not working because the "notice" convenience method uses the flash, whereas you want to display the params, not the flash. Try instead of doing a redirect and assigning the notice in the params, to first assign the notice to a flash variable then redirect.

if @project.save
  flash[:notice] = 'Project was successfully created'
  redirect_to project_path(@project)
end