I have a form_for like so:
<%= form_for(@post) do |f| %>
I would like to submit a parameter that is not an attribute of the model
<%= f.text_field :label%>
I have a Label model (labels has_many :posts and posts has_many :labels) and in the create action of the posts_controller I want to create a new Label object based off the label text_field. With the above text_field I get:
undefined method `label'for #<Object>
How can I go about achieving this?
Thanks in advance!
If your attribute doesn't exist into database table, and still you want to use it, then you have specify that attribute into model by following way
attr_accessor :name, :email, :content
You can try fields_for method for the creation of associated objects.
<%= form_for(@post) do |f| %>
<%= fields_for @post.labels do |label| %>
<%= label.text_field :name %>
<%= label.text_area :description %>
<% end %>
<% end %>
To display default number of labels you need to build the associated objects in the controller.
In your posts controller add
def new
@post = Post.new
#To build 2 labels use
2.times do
@post.labels.build
end
end
To accept the nested attributes add below code in your Post model.
class Post < ActiveRecord::Base
accepts_nested_attributes_for :labels
end
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