Hello,
I am trying to create in the main Layout of the application fields of
selection of fields of the model, and other to insert its value. Next I put
a search button, with the idea to leak by the search in the view of the
model where it executes this button. I have generated the views with
ajaxscaffold.
I do not know if what I try to do it does of this form or another one.
My code is the following one:
- Main Layout application.rhtml:
<div id="msg_search"
class=''<%=@srch_class%>''>
<%= form_tag :action => ''buscar'' %>
<p align="center">
<%=_(''B?squeda en el campo:'')%>
<select name="search_field">
<%= options_for_select(@campostabla, @params[:search_field]) %>
</select>
<label for="search_value"><%=_(''igual
a:'')%></label>
<input type="text" name="search_value"
value="<%=@search_value%>"
size=''16'' id=''search_value''/>
<%= submit_tag(_(''Buscar''),
:name=>''op'')%>
<%= end_form_tag %>
</p>
</div>
- Code in the controller Empresas_Controller.rb:
def list
@campostabla = Empresa.column_names #Para el campo b?squeda
end
# Para el bot?n buscar (Search Button)
def buscar
@search_field = @params[''search_field'']
@search_value = @params[''search_value'']
Empresa.find(:all, :conditions => ["? = ?", @search_field,
@search_value])
render_action ''list''
end
- When pressing the button search (Buscar), gives the following error me:
NoMethodError in Empresas#buscar
Showing app/views/layouts/application.rhtml where line #266 raised:
You have a nil object when you didn''t expect it!
You might have expected an instance of Array.
The error occured while evaluating nil.inject
Extracted source (around line #266):
263: <p align="center">
264: <%=_(''B?squeda en el campo:'')%>
265: <select name="search_field">
266: <%= options_for_select(@campostabla, @params[:search_field]) %>
267: </select>
268: <label for="search_value"><%=_(''igual
a:'')%></label>
269: <input type="text" name="search_value"
value="<%=@search_value%>"
size=''16'' id=''search_value''/>
RAILS_ROOT: script/../config/..
Application Trace | Framework Trace | Full Trace
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/helpers/form_options_helper.rb:114:in
`options_for_select''
#{RAILS_ROOT}/app/views/layouts/application.rhtml:266:in
`_run_rhtml_layouts_application''
lib/globalize/rails/action_view.rb:15:in `render_file''
#{RAILS_ROOT}/app/controllers/empresas_controller.rb:32:in `buscar''
#{RAILS_ROOT}/app/controllers/application.rb:29:in `process''
#{RAILS_ROOT}/app/controllers/application.rb:28:in `catch''
#{RAILS_ROOT}/app/controllers/application.rb:28:in `process''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/helpers/form_options_helper.rb:114:in
`options_for_select''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:314:in
`send''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:314:in
`compile_and_render_template''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:290:in
`render_template''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:249:in
`globalize_old_render_file''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/layout.rb:249:in
`render_with_a_layout''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:738:in
`render_with_layout''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:689:in
`render_action''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
`send''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
`perform_action_without_filters''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in
`perform_action_without_benchmark''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`measure''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in
`perform_action''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
`send''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
`process_without_filters''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:in
`process_without_session_management_support''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in
`process''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:in
`dispatch''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:115:in
`handle_dispatch''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:81:in
`service''
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
/usr/lib/ruby/1.8/webrick/server.rb:172:in `start_thread''
/usr/lib/ruby/1.8/webrick/server.rb:161:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:161:in `start_thread''
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each''
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:67:in
`dispatch''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/servers/webrick.rb:59
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require__''
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in `require''
/usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/server.rb:30
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require__''
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in `require''
/usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
script/server:3
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/helpers/form_options_helper.rb:114:in
`options_for_select''
#{RAILS_ROOT}/app/views/layouts/application.rhtml:266:in
`_run_rhtml_layouts_application''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:314:in
`send''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:314:in
`compile_and_render_template''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:290:in
`render_template''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_view/base.rb:249:in
`globalize_old_render_file''
lib/globalize/rails/action_view.rb:15:in `render_file''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/layout.rb:249:in
`render_with_a_layout''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:738:in
`render_with_layout''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:689:in
`render_action''
#{RAILS_ROOT}/app/controllers/empresas_controller.rb:32:in `buscar''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
`send''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:910:in
`perform_action_without_filters''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:368:in
`perform_action_without_benchmark''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`measure''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/benchmarking.rb:69:in
`perform_action_without_rescue''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/rescue.rb:82:in
`perform_action''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
`send''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/base.rb:381:in
`process_without_filters''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/filters.rb:377:in
`process_without_session_management_support''
/usr/lib/ruby/gems/1.8/gems/actionpack-1.12.1/lib/action_controller/session_management.rb:117:in
`process''
#{RAILS_ROOT}/app/controllers/application.rb:29:in `process''
#{RAILS_ROOT}/app/controllers/application.rb:28:in `catch''
#{RAILS_ROOT}/app/controllers/application.rb:28:in `process''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/dispatcher.rb:38:in
`dispatch''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:115:in
`handle_dispatch''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:81:in
`service''
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service''
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run''
/usr/lib/ruby/1.8/webrick/server.rb:172:in `start_thread''
/usr/lib/ruby/1.8/webrick/server.rb:161:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:161:in `start_thread''
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each''
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/webrick_server.rb:67:in
`dispatch''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/servers/webrick.rb:59
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require__''
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in `require''
/usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
/usr/lib/ruby/gems/1.8/gems/rails-1.1.2/lib/commands/server.rb:30
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in
`require__''
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:21:in `require''
/usr/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
`require''
script/server:3
Request
Parameters: {"op"=>"Buscar",
"search_field"=>"companyname",
"search_value"=>"nombre empresa a buscar"}
Show session dump
---
Response
Headers: {"Status"=>"200 OK", "cookie"=>[],
"Cache-Control"=>"no-cache"}
Thanks for your aid.
Greetings,
Manuel Salguero
Seville, Spain
