SQLite3 :: SQLException在Rails中实现搜索功能

Question

I am working on a search function in Rails. I followed the following tutorial

http://railscasts.com/episodes/37-simple-search-form

I have therefore updated my tutorial.rb with the following

def self.search(search)
  if search
    find(:all, :conditions => ['name LIKE ?', "%#{search}%"])
  else
    find(:all)
  end
end

Updating my tutorials_controller.rb with the following

def index
  @tutorials = Tutorial.search(params[:search])
end

Finally my view with

<div id="search">
      <%= form_tag tutorials_path, :method => 'get' do %>
    <p>
      <%= text_field_tag :search, params[:search] %>
      <%= submit_tag "Search", :name => nil, :class => "btn btn-success" %>
     </p>
    <% end %>
 </div>

So it is all displaying. When I hit the search box I get the following error.

ActiveRecord::StatementInvalid in TutorialsController#index

SQLite3::SQLException: no such column: name: SELECT "tutorials".* FROM "tutorials"  WHERE     (name LIKE '%%')

Any help greatly appreciated. Still new to this and a little our of my depth. I can see that it is having problem getting information from the database but not sure how to cure it.

Cheers!

Answer 1

As per the error SQLite3::SQLException: no such column: name , there is no column name in the tutorials table.

If you intended to search the tutorials table based on name field then add it to the tutorials table with a migration:

rails g migration AddNameToTutorial name

run rake db:migrate

Insert some records in Tutorial table with names.

Then, go ahead and search based on name field in tutorials table with your current code.

---

Second option is, if you intended to search tutorials table based on some other existing field then just update the search method as below:

def self.search(search)
  if search
    find(:all, :conditions => ['fieldname LIKE ?', "%#{search}%"])
  else
    find(:all)
  end
end

where replace fieldname with the attribute name that you want to search on.