Displaying form errors and keeping a simple URL


#1

Hi -

I’m using Authlogic for user authentication, and I’m trying to set up
the login screen (I’m having the same problem with the registration and
other forms, though, but logging in is a nice simple example).

My problem is that the login screen can be accessed through
example.com/login just as I’d like it to be, but when there’s a problem
with the form input, the url changes to example.com/user_session, which
I really don’t like. If I change the “render :new” in the controller to
“redirect_to login_path” then I’m sent to the correct url, but the
rails-generated errors don’t appear, and the information that had been
entered is wiped out, so I don’t want to do that.

I’m using a named url for the login screen:

map.login ‘/login’, :controller => ‘user_sessions’, :action => ‘new’
map.resource :user_session

My controller looks like:

def new
@user_session = UserSession.new
end

def create
@user_session = UserSession.new(params[:user_session])
if @user_session.save
flash[:notice] = “You are now logged in”
redirect_back_or_default account_path
else
render :new
end
end

And a simple view, for now:

<% form_for @user_session, :url => user_session_path do |f| %>
<%= f.error_messages %>
<%= f.label :email %>

<%= f.text_field :email %>



<%= f.label :password %> - <%= link_to “Forgot Your Password?”,
password_reset_path %>

<%= f.password_field :password %>



<%= f.check_box :remember_me %><%= f.label :remember_me %>



<%= f.submit “Login” %>
<% end %>

There must be a simple solution to this - I’m just learning rails, but
even so I feel like I’m missing something totally obvious. Can anyone
make a suggestion?


#2

Nothing? Really?

Please?


#3

Hi Chris,

On Thu, 2009-04-02 at 23:31 +0200, Chris H. wrote:

Hi -

My problem is that the login screen can be accessed through
example.com/login just as I’d like it to be, but when there’s a problem
with the form input, the url changes to example.com/user_session, which
I really don’t like. If I change the “render :new” in the controller to
“redirect_to login_path” then I’m sent to the correct url, but the
rails-generated errors don’t appear, and the information that had been
entered is wiped out, so I don’t want to do that.

I’m not sure about the latest versions of RESTful routing but it used to
be easy enough to pass the params hash along to the redirected_to
method.

redirect_to :action => ‘redirected_to_method’, :form_data =>
params[:form_data]

As a first cut I’d try:
redirect_to login_path, :form_data => params[:form_data]

Not sure about the error messages.

HTH,
Bill


#4

Thanks, Bill.

I actually stumbled across another technique, which I adapted from some
code I found in Lovd By Less (http://lovdbyless.com)

Here’s how it works for the new user form:

Routes:

map.connect ‘/join’, :controller => ‘users’, :action => ‘new’

Form tag:

<% form_for @user, :url => ‘/join’, :method => :post do |f| %>

Controller

def new
@user = User.new(params[:user])
return unless request.post?
if @user.save
flash[:notice] = “Account registered!”
redirect_back_or_default account_url
else
render :action => :new
end
end

I’ve only played with it a little bit so far, but it seems to do
everything I need, in less code than the scaffolding I was working with,
and I haven’t found a downside yet. I kind of like it.

bill walton wrote:

Hi Chris,

On Thu, 2009-04-02 at 23:31 +0200, Chris H. wrote:

Hi -

My problem is that the login screen can be accessed through
example.com/login just as I’d like it to be, but when there’s a problem
with the form input, the url changes to example.com/user_session, which
I really don’t like. If I change the “render :new” in the controller to
“redirect_to login_path” then I’m sent to the correct url, but the
rails-generated errors don’t appear, and the information that had been
entered is wiped out, so I don’t want to do that.

I’m not sure about the latest versions of RESTful routing but it used to
be easy enough to pass the params hash along to the redirected_to
method.

redirect_to :action => ‘redirected_to_method’, :form_data =>
params[:form_data]

As a first cut I’d try:
redirect_to login_path, :form_data => params[:form_data]

Not sure about the error messages.

HTH,
Bill