I am having some problems manipulating associations. For example, I have
an opinion model that belongs to both a user model and a blog model.
When listing a users blogs I want to also list that users opinion of the
blog. So in my view/blogs/list, I have some code like this:
<% @op = blog.opinions(:user_id => current_user.id)%>
<center> <%= h(@op.rating)%> </center>
rating is the field name in my opinions table. This however returns me
the following error message:
undefined method `rating'' for Opinion:Class
Since I do have a rating field in my opinions table, I''m not exactly
sure what is wrong with this. Thanks,
Charlie
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huard.elise-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
2007-Aug-11 21:47 UTC
Re: Help With associations
did you put attr_accessor :rating at the start of your opinion class ? This makes the rating getter and setter available for other classes HTH, Elise On Aug 11, 11:00 pm, Charlie White <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org> wrote:> I am having some problems manipulating associations. For example, I have > an opinion model that belongs to both a user model and a blog model. > When listing a users blogs I want to also list that users opinion of the > blog. So in my view/blogs/list, I have some code like this: > > <% @op = blog.opinions(:user_id => current_user.id)%> > <center> <%= h(@op.rating)%> </center> > > rating is the field name in my opinions table. This however returns me > the following error message: > > undefined method `rating'' for Opinion:Class > > Since I do have a rating field in my opinions table, I''m not exactly > sure what is wrong with this. Thanks, > Charlie > -- > Posted viahttp://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?hl=en -~----------~----~----~----~------~----~------~--~---
Hmm, I just put that at the beginning of my opinion model and it still didn''t work. Also, I had never heard about attr_accessor before, ill have to look into it. huard.elise-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org wrote:> did you put > attr_accessor :rating > at the start of your opinion class ? This makes the rating getter and > setter available for other classes > HTH, > > Elise > > On Aug 11, 11:00 pm, Charlie White <rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>-- 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?hl=en -~----------~----~----~----~------~----~------~--~---
bryansray-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
2007-Aug-12 14:58 UTC
Re: Help With associations
For starters ... the @op variable does not need to have the "@" symbol
inside the view. That makes it an "instance" ...
2nd ... you''re not getting back an "Opinion" object where you
do
"blog.opinions( ... )" you''re getting back an "array of
opinion"
objects.
You need to do something similar to this ...
<% opinions = blog.opinions( :user_id => current_user.id ) %>
<% for opinion in opinions %>
<center>
<%= h( opinion.rating ) %>
</center>
<% end %>
Hope that helps, man.
Good luck.
On Aug 11, 4:00 pm, Charlie White
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:> I am having some problems manipulating associations. For example, I have
> an opinion model that belongs to both a user model and a blog model.
> When listing a users blogs I want to also list that users opinion of the
> blog. So in my view/blogs/list, I have some code like this:
>
> <% @op = blog.opinions(:user_id => current_user.id)%>
> <center> <%= h(@op.rating)%> </center>
>
> rating is the field name in my opinions table. This however returns me
> the following error message:
>
> undefined method `rating'' for Opinion:Class
>
> Since I do have a rating field in my opinions table, I''m not
exactly
> sure what is wrong with this. Thanks,
> Charlie
> --
> Posted viahttp://www.ruby-forum.com/.
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Thanks, Could someone provide me with a simple explanation on when to use instance variables vs. when not to? -- 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?hl=en -~----------~----~----~----~------~----~------~--~---
Charlie White wrote:> Thanks, > Could someone provide me with a simple explanation on when to use > instance variables vs. when not to? >HI Charlie, I had written this in response to a question here. It doesn''t specifically address instance variables but gives the general feeling about what they do. http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/2ae42439587d32b9/4e71bbb39243f06e?l#4e71bbb39243f06e Hopefully this will give you some idea. If it doesn''t, I hope that someone can give you a better explanation :) Cheers, Mohit. 8/13/2007 | 9:18 AM. --~--~---------~--~----~------------~-------~--~----~ 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?hl=en -~----------~----~----~----~------~----~------~--~---