New actions on command

Rails
1

Hello!

I’m developing a classical Blog like app, and I’m having some kind of
issues about posts’ tags, because I’ve correctly installed
acts_as_taggable and acts_as_taggable_on_steroids gems but none of them
work, for a controller’s mismatch error (due to a Post’s tags:string
attribute I guess), but still, this is not important.

What I want to do is a Blogspot’s like schema, so basically there is the
http://website/search/label/***TAG_NAME*** url, which contains all the
posts done with this specific tag.
Well then, I’ve split the tags and each tag redirect to the correct url,
which contains all the posts made with the related tag, BUT I just
manually created the routes and templates.

The problem is : how could I tell to the controller to create an action,
or a method with the same name of those tags inside the Search
controller? I was thinking to a Proc, but I have no clue about how to
structure it. Could you help me?

And also, when I create a new Post, if I write in tags’ text_field
something like “wood,fire”, Rails will save the string as a single tag,
but what I evidently want is to .split(‘,’) this string.
Yet, I’m not able to find the place in between f.submit and the
PostsController, where the tags would be sent to the Controller already
split up.
Cos, if I put the split after the :

if @post.save
@post.tags.split(‘,’)

…in the console I get:

Post.last
=> [ #etc etc. tags : “wood,fire”]

and it isn’t split. Otherwise, if I put the .split(‘,’) method somewhere
into the _form I get errors.

So, basically I’m looking for the “place” in the middle between the
submit action and the Controller’s final check. Any idea??? :slight_smile:

2

On Wed, Aug 31, 2011 at 6:28 AM, Leo M. [email protected] wrote:

posts done with this specific tag.
something like “wood,fire”, Rails will save the string as a single tag,

Post.last
=> [ #etc etc. tags : “wood,fire”]

and it isn’t split. Otherwise, if I put the .split(‘,’) method somewhere
into the _form I get errors.

So, basically I’m looking for the “place” in the middle between the
submit action and the Controller’s final check. Any idea??? :slight_smile:

Look at acts_as_taggable_on.

http://groups.google.com/group/rubyonrails-talk?hl=en.

–

3

But it doesn’t work on my app.

I don’t know why, I downloaded it and installed with bundle install, but
still when I add to a certain model the string :
acts_as_taggable

I systematically obtain an error, so I was trying to avoid this by
creating by myself the method.

4

On Wed, Aug 31, 2011 at 6:24 PM, Leo M. [email protected] wrote:

But it doesn’t work on my app.

I don’t know why, I downloaded it and installed with bundle install, but
still when I add to a certain model the string :
acts_as_taggable

I systematically obtain an error, so I was trying to avoid this by
creating by myself the method.

there’s actually 3 gems for tagging, you mentioned the first two and I
said
the other one.
I suggest you uninstall the gems you mentioned and use
acts_as_taggable_on

If you have troubles making it work, post the errors and we’ll see what
we
can do to help
debug. Sometimes, it’s nice to try to do some things manually but in
this
case, doing so
will just cost you time and effort.

http://groups.google.com/group/rubyonrails-talk?hl=en.

–

5

I ultimately written the app from the beginning, this time including
‘acts_as_taggable_on’ from the beginning, and it works!
I’m definitely sure that it depended to a name mismatch, since the Post
model had already an attribute called :tags .
Even by removing this attribute with a “rails g migration
remove_tags_from_posts tags:string” the PostsController was puzzled by
the name mismatch, and yes, I also removed the attribute from schema.rb
; there is evidently some other file that should be modified as well,
but which file is it I couldn’t say.

Right now I will try to code the tag-based indexing, and I’ll let you
know!

Cheers and thank for your help!
L

6

you were splitting after you saved the model - you want to do that
before -
or better use a before save call back on the model to split before the
model
is stored
On Aug 30, 2011 3:28 PM, “Leo M.” [email protected] wrote:

posts done with this specific tag.
something like “wood,fire”, Rails will save the string as a single tag,

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

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7

All right, I just need the last step to go.

I’ve done everything correctly, so the index show a briefing of the
post, and all the tags, which are correctly linked to a proper url,
specifically :
let’s put I click on the tag “aqua” , the specified url shall be

http://0.0.0.0:3000/posts/tag/aqua

that’s just fantastic!
I’ve added a

def tag
@post = Post.tagged_with(params[:name])
respond_to do |format|
format.html # show.html.erb
format.xml { render :xml => @post }
end
end

in PostsController.
Everything works fine, but when I put the same view/show.html.erb code
to view/tag.html.erb , it tells me that:

the url is correct > http://0.0.0.0:3000/posts/tag/aqua

and the error is:

undefined method `title’ for #ActiveRecord::Relation:0x1041fd4c0

This happens because it tries to fetch all the posts with ID => “aqua” ,
which don’t exist.
I’m puzzled because I specified in the controller that :
@post = Post.tagged_with(params[:name])

but Rails insists in fetching the id as parameter.

Any idea?
Thanks guys!

8

On Thu, Sep 1, 2011 at 6:42 PM, Leo M. [email protected] wrote:

I’ve added a
Everything works fine, but when I put the same view/show.html.erb code
I’m puzzled because I specified in the controller that :
@post = Post.tagged_with(params[:name])

Post.tagged_with(params[:name]) returns an ActiveRecord::Relation object
not
a Post object.
You need to iterate through all the posts tagged with params[:name] so
do
the following

in the controller method, use

@posts = Post.tagged_with(params[:name]) #note that it’s plural

and in tag.html.erb, instead of using @post, use @posts but iterate
through
each post

<% @posts.each do |post| %>
<%= post.title %>
<% end %>

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9

I tried to do as you suggested but it doesn’t show anything. I’ve tried
also to figure out if it wasn’t a nil object but it’s not even this.
For instance, on tag.html.erb :

<% @posts.each do |post| %>
<%= post.title.class%>
<%= post.tags%>
<%end%>

it gives as result a blank page, it not even shows which class are those
elements. But still, it doesn’t either give errors.

What I did then was to change the ‘tag’ action in PostsController in :

@posts = Post.tagged_with(params[:id])

But then I’m wondering if the mistake isn’t in the post’s index.html.erb
, because this is what I did :

<% @posts.each do |post| %>

<%= post.title %> <%= post.body %> <% post.tag_list %> <% b = a.to_a %> <% b.each do |tag|%> <%= link_to tag, {:controller => :posts, :action => :tag, :id => tag.id }%> <% end%>

and I did this because otherwise the tag_list would appear as a single
string merged together, even if I use a split method. This works, or at
least it makes the tags appear singularly, but still, when I go to the
url
http://0.0.0.0:3000/posts/tag/#TAG_ID#
I get and empty page, even though the ROUTES.RB has this string
uncommented:
match ‘:controller(/:action(/:id(.:format)))’

…no idea :-\

10

  1. Nope. There’s the main index:
    0.0.0.0:3000/posts #which is placed in =>
    /views/posts/index.html.erb

    and there’s the tag action:
    0.0.0.0:3000/posts/tag/TAG_NAME #which is placed in
    /views/posts/tag.html.erb

  2. Nope. But I didn’t get the right post neither before. Changing from
    (params[:name]) to (params[:id]) didn’t change big things. Even though
    the url 0.0.0.0:3000/posts/tag/TAG_NAME or also
    0.0.0.0:3000/posts/tag/TAG_ID are recognized and loaded, they don’t
    display the relatives posts.

  3. In routes.rb there’s this line that should be sufficient as
    instruction, but maybe I’m missing something :
    resources :posts
    match ‘:controller(/:action(/:id(.:format)))’

Thanks for your help!

11

On Fri, Sep 2, 2011 at 3:21 AM, Leo M. [email protected] wrote:

elements. But still, it doesn’t either give errors.

<%= post.title %> least it makes the tags appear singularly, but still, when I go to the url http://0.0.0.0:3000/posts/tag/#TAG_ID# I get and empty page, even though the ROUTES.RB has this string uncommented: match ':controller(/:action(/:id(.:format)))'

Sorry but I’m a little confused now on what’s happening in your app.
Please
answer the following questions:

  1. is your view for the index and tag actions the same?
  2. since you are now using params[:id] instead of params[:name], are
    you
    getting the right posts?
  3. please post the corresponding routes line that matches
    /posts/tag/tag_name

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12

On Fri, Sep 2, 2011 at 6:15 PM, Leo M. [email protected] wrote:

  1. Nope. There’s the main index:
    0.0.0.0:3000/posts #which is placed in =>
    /views/posts/index.html.erb

and there’s the tag action:
0.0.0.0:3000/posts/tag/TAG_NAME #which is placed in
/views/posts/tag.html.erb

what i’m asking is if they have the same code.

  1. Nope. But I didn’t get the right post neither before. Changing from
    (params[:name]) to (params[:id]) didn’t change big things. Even though
    the url 0.0.0.0:3000/posts/tag/TAG_NAME or also
    0.0.0.0:3000/posts/tag/TAG_ID are recognized and loaded, they don’t
    display the relatives posts.

can you put a debugger inside the tag action and paste the output of
params.inspect

  1. In routes.rb there’s this line that should be sufficient as
    instruction, but maybe I’m missing something :
    resources :posts
    match ‘:controller(/:action(/:id(.:format)))’

so the route that matches the url is the last one, so params[:id] should
have the tag name
in the tag action. are you sure you have posts in your database that
are
properly tagged?

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13

On Fri, Sep 2, 2011 at 8:08 PM, Leo M. [email protected] wrote:

def tag
<%= debug post.tags %>

a = Post.first
=> #<Post id: 1, title: “the sea is beautiful”, body: “because it’s
beautiful”, created_at: “2011-08-31 14:21:14”, updated_at: “2011-08-31
14:21:14”>
a.tag_list
=> [“water”, “landscape”]
a.tags
=> [#<ActsAsTaggableOn::Tag id: 1, name: “water”>,
#<ActsAsTaggableOn::Tag id: 2, name: “landscape”>]

so doing Post.tagged_with(‘water’) should return the first Post record.
and going to /posts/tag/water gives a blank page? If the answer to this
is
yes,
give me a copy of your code, I’ll try to run it locally.

http://groups.google.com/group/rubyonrails-talk?hl=en.

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14
  1. No, in index.html.erb there’s just the standard template.
    in tag.html.erb I’ve tried to do several ways, none gives an error
    but none shows the tagged posts either.
    Right now I tried a simpler solution : a plain
    <[email protected] do |post| %>
    <%= post.tags.class %>
    <%= post.class %>
    <%end%>

where @posts is
def tag
@posts = Post.tagged_with(params[:id])
end

under the PostsController.rb .

but the shown view is just empty, not even NilClass.

  1. for this tag.html.erb view:
    <% debug @posts.each do |post| %>
    <%= debug post.title%>

    <%= debug post.tags %>
    <%end%>

I obtain :
#Enumerable::Enumerator:0x104144240

which is referred to <% debug @posts.each do |post| %>

if I add or delete debug on the others params, nothing changes.

  1. Absolutely sure, from the console :

a = Post.first
=> #<Post id: 1, title: “the sea is beautiful”, body: “because it’s
beautiful”, created_at: “2011-08-31 14:21:14”, updated_at: “2011-08-31
14:21:14”>

a.tag_list
=> [“water”, “landscape”]

a.tags
=> [#<ActsAsTaggableOn::Tag id: 1, name: “water”>,
#<ActsAsTaggableOn::Tag id: 2, name: “landscape”>]