I have tried to get through this error with no luck. In a form I have a
user enter a title and then search the database for any similar titles.
I need help with this. It''s like the information isn''t being
passed
through. Here is my information. I am using Rails 2.1 with
nifty_scaffold. First I changed my route
routes.rb
map.resources :titles, :collection => { :find_similar => :get }
new.html.erb
<% title "New Title" %>
<% form_for @title, :url => { :action => :find_similar } do |f| %>
<p>
<%= f.label :name %><br />
<%= f.text_field :name %>
</p>
<p><%= f.submit "Search" %></p>
<% end %>
<p><%= link_to "Back to List", titles_path %></p>
titles_controller.rb
def find_similar
@searchkey = params[:name]
@title = Title.find(:all,
:conditions => ["name like ?",
''%''+@searchkey+''%''])
end
Parameters:
{"commit"=>"Search",
"title"=>{"name"=>"one day"},
"authenticity_token"=>"ec64448f9d39d29dd3dbafd1a1a31415ea165bdb"}
TypeError in TitlesController#find_similar
can''t convert nil into String
app/controllers/titles_controller.rb:48:in `+''
app/controllers/titles_controller.rb:48:in `find_similar''
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Hi Quincy,
have you tried the following?
def find_similar
@searchkey = params[:title][:name]
...
end
On Jul 12, 8:24 pm, Quincy Central_tex <rails-mailing-l...@andreas-
s.net> wrote:> I have tried to get through this error with no luck. In a form I have a
> user enter a title and then search the database for any similar titles.
> I need help with this. It''s like the information isn''t
being passed
> through. Here is my information. I am using Rails 2.1 with
> nifty_scaffold. First I changed my route
>
> routes.rb
> map.resources :titles, :collection => { :find_similar => :get }
>
> new.html.erb
> <% title "New Title" %>
>
> <% form_for @title, :url => { :action => :find_similar } do |f|
%>
> <p>
> <%= f.label :name %><br />
> <%= f.text_field :name %>
> </p>
> <p><%= f.submit "Search" %></p>
> <% end %>
>
> <p><%= link_to "Back to List", titles_path
%></p>
>
> titles_controller.rb
> def find_similar
> @searchkey = params[:name]
> @title = Title.find(:all,
> :conditions => ["name like ?",
> ''%''+@searchkey+''%''])
> end
>
> Parameters:
>
> {"commit"=>"Search",
> "title"=>{"name"=>"one day"},
>
"authenticity_token"=>"ec64448f9d39d29dd3dbafd1a1a31415ea165bdb"}
>
> TypeError in TitlesController#find_similar
> can''t convert nil into String
> app/controllers/titles_controller.rb:48:in `+''
> app/controllers/titles_controller.rb:48:in `find_similar''
> --
> Posted viahttp://www.ruby-forum.com/.
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gsterndale wrote:> Hi Quincy, > > have you tried the following? > > def find_similar > @searchkey = params[:title][:name] > ... > end > > > On Jul 12, 8:24 pm, Quincy Central_tex <rails-mailing-l...@andreas-That did it! Thanks gsterndale! Please explain whats happening here. I haven''t seen this in any documentation. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
If you look at the HTML generated by your new.html.erb template you''ll
see how form_for names your input fields. For example:
<% form_for @title, :url => { :action => :find_similar } do |f| %>
<%= f.text_field :name %>
<% end %>
would generate something like:
<form action="/titles/find_similar" class="..."
id="..."
method="post">
<input id="title_name" name="title[name]"
type="text" />
</form>
Note the brackets [] around "name". As you know, Rails puts the
submitted form field names and values into a Hash called "params".
When a form field with brackets is submitted, Rails interprets the
value of the parameter "title" as a Hash with a key called
"name". The
value of that field is assigned to that key. The result is a nested
Hash, exactly what you pasted in your first post.
{
"commit"=>"Search",
"title"=>{
"name"=>"one day"
},
"authenticity_token"=>"ec64448f9d39d29dd3dbafd1a1a31415ea165bdb"
}
http://api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#M001737
On Jul 12, 11:51 pm, Quincy Ctx
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> gsterndale wrote:
> > Hi Quincy,
>
> > have you tried the following?
>
> > def find_similar
> > @searchkey = params[:title][:name]
> > ...
> > end
>
> > On Jul 12, 8:24 pm, Quincy Central_tex <rails-mailing-l...@andreas-
>
> That did it! Thanks gsterndale! Please explain whats happening here. I
> haven''t seen this in any documentation.
> --
> Posted viahttp://www.ruby-forum.com/.
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Got it!! thanks -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---