I assume that u r following models:
class ContentMaster < ActiveRecord::Base
has_and_belongs_to_many :tags
end
class Tags < ActiveRecord::Base
has_and_belongs_to_many :content_masters
end
change ur view as:
<% for tag in Tag.find(:all) %>
<div>
<%=check_box_tag "content_master[tag_id*s*][]", tag.id,
@content_master.tags.include?(
>
> tag) %>
> <%= tag.name %>
>
> </div>
> <% end %>
Carefully look on the above code, I have changed tag_id to tag_ids.
Then you have to change the create method as follows:
def create
@content_master = ContentMaster.new(params[:content_master])
> respond_to do |format|
> if @content_master.save
> #save images
The above code will perfectly work
On Tue, Apr 13, 2010 at 2:14 PM, Rahul Mehta <[email protected]>wrote:
> Hiiii,
>
> I have created one migration..
>
> class TagContentMasterJoin < ActiveRecord::Migration
> def self.up
> create_table 'content_masters_tags' do |t|
> t.column 'tag_id', :integer
> t.column 'content_master_id', :integer
> t.timestamps
> end
> end
>
> def self.down
> drop_table 'content_masters_tags'
> end
> end
> for joining two tables
> and in content_master view new want to save associated tag in the
> above table for that i have written this code in content_master view
> new
>
> <% for tag in Tag.find(:all) %>
> <div>
> <%=check_box_tag "content_master[tag_id][]", tag.id,
> @content_master.tags.include?(tag) %>
> <%= tag.name %>
>
> </div>
> <% end %>
>
> and in my create function of content master controller following code
> is present ..
> def create
> @content_master = ContentMaster.new
> @content_master.tags=params[:content_master][:tag_id]
> respond_to do |format|
> if @content_master.save
> #save images
> and some code here
>
>
> but this all giving me this error
> ActiveRecord::AssociationTypeMismatch in Content
> mastersController#create
>
> Tag(#46439460) expected, got String(#21132310)
>
> RAILS_ROOT: D:/TestingGeek/trunk/Site
> Application Trace | Framework Trace | Full Trace
>
> C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> associations/association_proxy.rb:262:in `raise_on_type_mismatch'
> C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> associations/association_collection.rb:320:in `replace'
> C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> associations/association_collection.rb:320:in `each'
> C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> associations/association_collection.rb:320:in `replace'
> C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/
> associations.rb:1325:in `tags='
> D:/TestingGeek/trunk/Site/app/controllers/
> content_masters_controller.rb:64:in `create'
>
>
> and in my model code is
> has_and_belongs_to_many :content_masters
> has_and_belongs_to_many :tags
>
> i have give as respective model..
>
> please help this is urgent..
>
> thanks
>
> rahul..
>
>
>
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