Rails - Oct 2006 - Creating subcategories with acts_as_tree

I''ve been working on my first real RoR project and seemingly everything
is going well except I''m at a loss right now trying to figure out how
to
create subcategories.

This is what I have so far:

Database:
Category Table
id
name
parent_id

News Table
id
title
content
category_id

Models:
CATEGORY
acts_as_tree
has_many :news

NEWS
belongs_to category


In my Application Helper I''ve set up the following:

def display_categories(categories)
  ret = "<ul>"
    for category in categories
     if category.parent_id == 0
	ret += "<li>"
	ret += link_to category.name
	ret += find_all_subcategories(category)
	ret += "</li>"
     end
    end
     ret += "</ul>"
end

def find_all_subcategories(category)
 if category.children.size > 0
   ret = ''<ul>''
   category.children.each { |subcat|
     if subcat.children.size > 0
       ret += ''<li>''
       ret += link_to h(subcat.name), :action => ''edit'',
:id => subcat
       ret += find_all_subcategories(subcat)
       ret += ''</li>''
     else
       ret += ''<li>''
       ret += link_to h(subcat.name), :action => ''edit'',
:id => subcat
       ret += ''</li>''
     end
     }
   ret += ''</ul>''
 end
end




In my controller I have set up create for news:
def create
    @news = News.new(params[:news])
    if @news.save
      flash[:notice] = ''News was successfully created.''
      redirect_to :action => ''list''
    else
      render :action => ''new''
    end
  end

But I''m not sure what to add to this and what to put in my layout to be
able to select what category/subcategory when creating a news item, and 
how to create subcategories with-in the parent.  If I manually go into 
the database and change the id numbers it will display properly, I''m 
just confused as how to create.

Thanks for any help... Very much appreciated.

-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---

I''ve been working on my first real RoR project and seemingly everything
is going well except I''m at a loss right now trying to figure out how
to
create subcategories.

This is what I have so far:

Database:
Category Table
id
name
parent_id

News Table
id
title
content
category_id

Models:
CATEGORY
acts_as_tree
has_many :news

NEWS
belongs_to category


In my Application Helper I''ve set up the following:

def display_categories(categories)
  ret = "<ul>"
    for category in categories
     if category.parent_id == 0
	ret += "<li>"
	ret += link_to category.name
	ret += find_all_subcategories(category)
	ret += "</li>"
     end
    end
     ret += "</ul>"
end

def find_all_subcategories(category)
 if category.children.size > 0
   ret = ''<ul>''
   category.children.each { |subcat|
     if subcat.children.size > 0
       ret += ''<li>''
       ret += link_to h(subcat.name), :action => ''edit'',
:id => subcat
       ret += find_all_subcategories(subcat)
       ret += ''</li>''
     else
       ret += ''<li>''
       ret += link_to h(subcat.name), :action => ''edit'',
:id => subcat
       ret += ''</li>''
     end
     }
   ret += ''</ul>''
 end
end




In my controller I have set up create for news:
def create
    @news = News.new(params[:news])
    if @news.save
      flash[:notice] = ''News was successfully created.''
      redirect_to :action => ''list''
    else
      render :action => ''new''
    end
  end

But I''m not sure what to add to this and what to put in my layout to be
able to select what category/subcategory when creating a news item, and 
how to create subcategories with-in the parent.  If I manually go into 
the database and change the id numbers it will display properly ( I can 
add <%= display_categories(@categories) %> in my layout ), I''m
just
confused as how to create under the correct parent.

Thanks for any help... Very much appreciated.

-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---

Sorry, I must have accidently posted this twice.


-- 
Posted via http://www.ruby-forum.com/.

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---

um ... i don''t fully get what your problem is.

instead of listing the categories in a HTML List, put that list in a
select dropdown box, set the name to "category_id", and the value of
the options to the categories id values.

then when you submit the form and "create"  gets called,
params[:news][:category_id] will contain the selected news category.
save the news, and you''re done.


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---