I've been having some difficulty in understanding the source of a problem.
Below is a listing of the model classes. Essentially the goal is to have the ability to add sentences to the end of the story, or to add stories to an existing sentence_block. Right now, I'm only attempting to allow users to add sentences, and automatically create a new sentence_block for the new sentence.
class Story < ActiveRecord::Base
has_many :sentence_blocks, :dependent => :destroy
has_many :sentences, :through => :sentence_blocks
accepts_nested_attributes_for :sentence_blocks
end
class SentenceBlock < ActiveRecord::Base
belongs_to :story
has_many :sentences, :dependent => :destroy
end
class Sentence < ActiveRecord::Base
belongs_to :sentence_block
def story
@sentence_block = SentenceBlock.find(self.sentence_block_id)
Story.find(@sentence_block.story_id)
end
end
The problem is occurring when using the show method of the Story. The Story method is as follows, and the associated show method for a sentence is also included.
Sentence.show
def show
@sentence = Sentence.find(params[:id])
respond_to do |format|
format.html {redirect_to(@sentence.story)}
format.xml { render :xml => @sentence }
end
end
Story.show
def show
@story = Story.find(params[:id])
@sentence_block = @story.sentence_blocks.build
@new_sentence = @sentence_block.sentences.build(params[:sentence])
respond_to do |format|
if @new_sentence.content != nil and @new_sentence.sentence_block_id != nil and @sentence_block.save and @new_sentence.save
flash[:notice] = 'Sentence was successfully added.'
format.html # new.html.erb
format.xml { render :xml => @story }
else
@sentence_block.destroy
format.html
format.xml { render :xml => @story }
end
end
end
I'm getting a "couldn't find Sentence_block without and id" error. So I'm assuming that for some reason the sentence_block isn't getting saved to the database. Can anyone help me with my understanding of the behavior and why I'm getting the error? I'm trying to ensure that every time the view depicts show for a story, an unnecessary sentence_block and sentence isn't created, unless someone submits the form, I'm not really sure how to accomplish this. Any help would be appreciated.
