Rails - Jan 2006 - Beginner Questions parameter passing failing

Dear all,

 

I''m pretty much a complete programming novice, but I''ve
battled my way
through

the Pickaxe book, and the Agile Rails book, and am trying to piece together 

some pretty basic functionality at the moment.

 

I''m having an issue passing parameters from a login form and would
really

appreciate some assistance. I suspect I''ve made some basic fundamental
error,

but I can''t figure it out.

 

My "welcome" view page looks like this (my "welcome" action
doesn''t do
anything

but render the welcome view)

 

       <%= start_form_tag :action => :login %>

       <table>

            <tr>

                        <td> Enter your first name </td>

                        <td> <%= text_field :user, :firstname,
''size'' => 40
%> </td>

            

            <tr>

                        <td> </br> <%= submit_tag("Log
In") %></td>

 

        <%= end_form_tag %>

        </table>

 

 

Which simply submits a firstname to my login action which tries to match it
up

to an entry in my User model (which has firstname, lastname, email, password
fields)

 

     def login

             @user = User.find_by_firstname(params[:firstname])

     end

 

However, when I try and display the resulting @user.firstname in the login
view

I always get the following error.

 

 

   NoMethodError in Useradmin#login

 

   Showing app/views/useradmin/login.rhtml where line #4 raised:

 

   You have a nil object when you didn''t expect it!

   The error occured while evaluating nil.firstname

 

This error appears even though the name submitted in the form matches one in
the

database. The action works if I hard code the name instead of the

"params[:firstname]" text, so I think it''s an issue with the
parameters
passing.

 

Any assistance gratefully recieved.

 

Pete

 

 

 

            


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Hi Peter,

Use @user = User.find_by_firstname(params[:user][:firstname])

Your forgot the [:user] bit.

Joerg

-- 
Posted via http://www.ruby-forum.com/.

Hi Peter,

Use @user = User.find_by_firstname(params[:user][:firstname])

You forgot the [:user] bit.

Joerg

-- 
Posted via http://www.ruby-forum.com/.

Thanks for that really quick response. Much appreciated.

Pete

-- 
Posted via http://www.ruby-forum.com/.