I've to make a simple forum for my app.
The idea was to have:
Forum -has many < Forum_subjects -has many< posts
Now I've made a form in which the user enters the subject and the
first post, it was easy to add the subject to the forum :
params[:forum_subject][:forum_if] = 1 unless params[:forum_subject]
[:forum_id]
forum = Forum.find_by_id(params[:forum_subject][:forum_id])
@forum_subject = ForumSubject.new(params[:forum_subject])
if @forum_subject.save
forum.forum_subjects << @forum_subject
redirect_to :controller=>:forum, :action=>:list
end
end
I dont really know how to add a new post to this at the same time
I could assume to do that this way:
- create new forum subject
- get the last insert_id of the forum_subject
- add new post to the subject
The thing is I cant find the way to get the last insert_id (for
finding the subject)
I guess there is another way of doing this, but I lack skill in
rails...
Forum:
has_many :subjects
has_many :posts, :through => :subjects
Subject:
belongs_to :forum
has_many :posts
Posts
belongs_to :subject
Don’t call them forum_subjects as that is violating the DRY (Don’t Repeat Yourself) principle.
params[:forum_subject][:forum_id] = 1 unless params[:forum_subject][:forum_id]
Any reason for this? What if the first forum gets deleted?
forum = Forum.find_by_id(params[:forum_subject][:forum_id])
Instead of using find_by_id just use find, that is unless you want to
return nil rather than an ActiveRecord::RecordNotFound exception (which
should never occur unless the user does something wrong)
Adam, if you’re still looking for some help I’ll be glad to help you out, add me as radarlistener@gmail.com on MSN if you have it, or on googletalk. Alternatively you can shoot me an email.
I guess what I'm doing right now is pretty simple but after a days
work it can be hard to figure it out.
I did a pretty simple form for topic and the post, like in a usual
forum the user can create a topic and add the first post.
Here's the short version of the form.
You shouldn’t need to pass in user_id and forum_id as hidden fields, as user_id should be stored as a session variable (session[:user]) and forum_id should come from the URL.
If you’re doing just Topic.new I think it’ll just redirect to /topics, but if you do it either of the ways I specified it should go to /forums/2/topics
I'll give the full code (after the modifications) cause I just don't
know what to do anymore I'm getting redirected to /topics with the
message `Couldn't find Forum without an ID`
the controller:
class TopicsController < ApplicationController
before_filter :user_logged_in?
layout :switch_layout
def index
@topics = @forum.topics
end
def new
@forum = Forum.find params[:forum_id]
@topic =
Topic.new :forum_id=>params[:forum_id], :user_id=>session[:user_id]
@post = Post.new
end
flash[:notice] = 'Created new topic' if @topic.save!
redirect_to forums_path
rescue ActiveRecord::RecordInvalid
render :action => :new
end
def edit
@topic = Topic.find params[:id]
end
def update
@topic = Topic.find params[:id]
if @topic.update_attributes params[:topic]
flash[:notice] = "Changed #{@topic.name}"
redirect_to forum_path(@topic.forum_id)
end
rescue ActiveRecord::RecordInvalid
render :action => :edit
end
def destroy
topic =Topic.find params[:id]
if topic.destroy
flash[:notice] = "topic: #{topic.name} was deleted"
end
redirect_to forum_path(topic.forum_id)
end
def show
@posts = Topic.find(params[:id]).posts
end
end
Putting the forum aside I was trying to make a faq, type thing for my
project also using rest
so i went to the config/routes.rb typed
map.resources :subject, :has_many=>:faqs
map.resources :faqs
And when i'm trying to add a new faq to existing subject via
subjects/2/faqs/new
And when i'm sending the form it's redirected to /faqs with the same
error message
