Issue
I have generated two models tour and tourcategories in my application. Now I want to associate these two models using has_many and belongs_to. Where tour can relate with single tourcategory but tourcategory can have more than one tours. So definition of the tour model is following:
class Tour < ActiveRecord::Base
belongs_to :tourcategory
attr_accessible :content, :element_id, :job_id, :title, :priority, :tourcategory
end
this is the definition of tourcategory model:
class Tourcategory < ActiveRecord::Base
has_many :tours
attr_accessible :title
end
this is the definition of the tours migration file:
class CreateTours < ActiveRecord::Migration
def change
create_table :tours do |t|
t.string :element_id
t.string :title
t.text :content
t.integer :job_id
t.integer :priority
t.belongs_to :tourcategory, index:true
t.timestamps
end
end
end
this is the definition of the tours controller :
def new
@tourcategories = Tourcategory.all
@tour = Tour.new
@tour.build_tour
respond_to do |format|
format.html
format.json { render json: @tour }
end
end
Now I am getting an error
undefined method `tourcategories'
When I access the _form.html.haml view for editing and for adding new tour.
this the code where error is encountered.
.field
= label_tag "tour Categories"
%br/
= select_tag "tourcategory", options_from_collection_for_select(Tourcategory.all, 'id', 'title', @tour.tourcategories.map{ |j| j.id })
= f.submit
Solution
You actually need to use HABTM (Has And Belongs To Many) - please check out Rails documentation for more details
Answered By - SpeedyWizard Answer Checked By - Dawn Plyler (PHPFixing Volunteer)
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