Forum: Ruby on Rails Strange (for me) Scaffold source code generated

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ju (Guest)
on 2008-11-25 11:53
(Received via mailing list)
Hello :)

I generated model, view and controler for products database table
using scaffold

I try to change controler name from product to admin but I can't :( (I
didn't know how to specifi diferent controler name when use scaffold)

I controllers/s_controller.rb to controllers/admin_controller.rb
view/products directory to view admin directory
layout/products.html.erb to layout/admin.html.erb
and make some modifications

but i can't do it because there are some strange thinks

view\products\index.html
    <td><%= link_to 'Show', product %></td>
    <td><%= link_to 'Edit', edit_product_path(product) %></td>
    <td><%= link_to 'Destroy', product, :confirm => 'Are you
sure?', :method => :delete %></td>

what are these edit_product_path functions? And why edit link is
something like
    <td><a href="/products/1/edit">Edit</a></td>
and not
    <td><a href="/products/edit/1">Edit</a></td>

when i try to make /admin/1/edit request I get an error that I have
not action 1, it works only with /admin/edit/1

in products controler it works both ways:
/products/1/edit
and
/products/edit/1/

Can you help me, pls :)
Ju L. (Guest)
on 2008-11-25 12:11
If I have to short my question it is:

view/products/index.html.erb

<h1>Listing products</h1>

<table>
  <tr>
    <th>Title</th>
    <th>Description</th>
    <th>Image url</th>
  </tr>

<% for product in @products %>
  <tr>
    <td><%=h product.title %></td>
    <td><%=h product.description %></td>
    <td><%=h product.image_url %></td>
    <td><%= link_to 'Show', product %></td>
    <td><%= link_to 'Edit', edit_product_path(product) %></td>
    <td><%= link_to 'Destroy', product, :confirm => 'Are you sure?',
:method => :delete %></td>
  </tr>
<% end %>
</table>

<br />

<%= link_to 'New product', new_product_path %>

what is this function edit_product_path and why the result is
/1/edit and not /edit/1

And why both work?

???
Frederick C. (Guest)
on 2008-11-25 12:30
(Received via mailing list)
On 25 Nov 2008, at 10:11, Ju Lian wrote:
>
> <%= link_to 'New product', new_product_path %>
>
> what is this function edit_product_path and why the result is
> /1/edit and not /edit/1
>
Short answer: restful routing. When you declare a route for products
in routes.rb this add a bunch of named routes, so new_product_path is
the url which gives you the path where the new product form is,
edit_product_path(some_product) is the url for editing some_product
etc...

> And why both work?
>
because you still have the old controller/action/id routes in your
routes.rb file
Ju L. (Guest)
on 2008-11-25 12:47
Frederick C. wrote:
> On 25 Nov 2008, at 10:11, Ju Lian wrote:
>>
>> <%= link_to 'New product', new_product_path %>
>>
>> what is this function edit_product_path and why the result is
>> /1/edit and not /edit/1
>>
> Short answer: restful routing. When you declare a route for products
> in routes.rb this add a bunch of named routes, so new_product_path is
> the url which gives you the path where the new product form is,
> edit_product_path(some_product) is the url for editing some_product
> etc...
>
>> And why both work?
>>
> because you still have the old controller/action/id routes in your
> routes.rb file

Thank you very much :)

Now I understand that I have to learn this:
http://guides.rubyonrails.org/routing_outside_in.html
Ju L. (Guest)
on 2008-11-25 15:27
Ju Lian wrote:
> Frederick C. wrote:
>> On 25 Nov 2008, at 10:11, Ju Lian wrote:
>>>
>>> <%= link_to 'New product', new_product_path %>
>>>
>>> what is this function edit_product_path and why the result is
>>> /1/edit and not /edit/1
>>>
>> Short answer: restful routing. When you declare a route for products
>> in routes.rb this add a bunch of named routes, so new_product_path is
>> the url which gives you the path where the new product form is,
>> edit_product_path(some_product) is the url for editing some_product
>> etc...
>>
>>> And why both work?
>>>
>> because you still have the old controller/action/id routes in your
>> routes.rb file
>
> Thank you very much :)
>
> Now I understand that I have to learn this:
> http://guides.rubyonrails.org/routing_outside_in.html

I still can't change controller name from products to admin

=============
=== routes.rb
=============

ActionController::Routing::Routes.draw do |map|
  map.resources :products
  map.resources :admin

  # map.connect ':controller/:action/:id'
  # map.connect ':controller/:action/:id.:format'
end

May be controler name must be 'admins' ?

Some of helpers functions doesn't work for me :(

=================================
=== /view/products/index.hmtl.erb
=================================

    <td><%= link_to 'Show', product %></td>
    <td><%= link_to 'Edit', edit_product_path(product) %></td>
    <td><%= link_to 'Destroy', product, :confirm => 'Are you sure?',
:method => :delete %></td>

<%= link_to 'New product', new_product_path %>

become:
=================================
=== /view/admin/index.hmtl.erb
=================================

    <td><%= link_to 'Show', admin_path(:id => product.id) %></td>
    <td><%= link_to 'Edit', edit_admin_path(:id => product.id) %></td>
    <td><%= link_to 'Destroy', admin_path(:id => product.id), :confirm
=> 'Are you sure?', :method => :delete %></td>

<%= link_to 'New product', new_admin_path %>

=================================
=== /view/products/new.hmtl.erb
=================================

<h1>New product</h1>

<% form_for(@product) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.label :title %><br />
    <%= f.text_field :title %>
  </p>
  <p>
    <%= f.label :description %><br />
    <%= f.text_area :description %>
  </p>
  <p>
    <%= f.label :image_url %><br />
    <%= f.text_field :image_url %>
  </p>
  <p>
    <%= f.submit "Create" %>
  </p>
<% end %>

<%= link_to 'Back', products_path %>

=================================
=== /view/admin/new.hmtl.erb
=================================

<h1>New product</h1>

<% form_for(@product) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.label :title %><br />
    <%= f.text_field :title %>
  </p>
  <p>
    <%= f.label :description %><br />
    <%= f.text_area :description %>
  </p>
  <p>
    <%= f.label :image_url %><br />
    <%= f.text_field :image_url %>
  </p>
  <p>
    <%= f.submit "Create" %>
  </p>
<% end %>

<%= link_to 'Back', admin_path %>

1-st The form submits to product controller instead of new admin
controller
2-nd admin_path or admins_path in the last row give me an error

:) What I am doing wrong?

Is there some reason not to change controller name from products to
admin?
Ju L. (Guest)
on 2008-11-25 15:41
May be this is the right way (it works)

 =============
 === routes.rb
 =============
 map.resources :products, :as => 'admin'
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