Databases
StackOverflow2013
Postsdbo
POIn Rails 3 is it possible or proper to call @variable from another model in a view?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POIn Rails 3 is it possible or proper to call @variable from another model in a view?
    primarykey
    data
    text
    <p>Here I met a problem... I am building a homepage of a website and trying to integrate infos about users, messages, location_infos bla bla bla into the same page (using jquery and ajax)...</p> <p>In PHP or JSP, I think such page is quite easy to make(divide all these functions into different services and build a homepage to load them), but in Rails 3, I found that actually I could only render @user to the view if the model is 'User' and only @user_group if the model is 'User_group'...</p> <p>Well, I use 'has_many, belongs_to,has_one' to organize some of these models. (so that I could use variables like user.user_groups.each) But actually there are always something quite different that I think it is not proper to claim these two models had a connection, for example between locations and users...So in this circumstance, how could I refer variables from other models in a certain view page? Or is this quite harmful which I really have to avoid so that I may not seriously break the RESTFul style of pages? </p> <p>Well here is my codes:</p> <pre><code>Class UsersController&lt; ApplicationController def home if session[:current_user_id]==nil redirect_to :action=&gt; "login" else @user =User.find(session[:current_user_id]) respond_to do |format| format.html format.json {render json: @user} end end end end </code></pre> <p>so in the users/home.html.erb</p> <h2> I could use codes like <code>@user.XXX</code> to generate the content</h2> <p>But if I rewrite the method as below:</p> <pre><code> def home if session[:current_user_id]==nil redirect_to :action=&gt; "login" else #here \\\ @user_2=User.find(session[:current_user_id]) respond_to do |format| format.html format.json {render json: @user} end end end </code></pre> <p>I found it impossible to call @user_2 in the users/home.html.erb</p> <p>And if I add more into the UsersController as:</p> <p>@user_group=User_group.find(session[:current_user_id])</p> <p>I found I cannot just render the <code>@user_group</code> like <code>format.html {render @user_group}</code> And I also cannot get the <code>@user_group</code> in the users/home.html.erb </p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USYitong Zhou
    1. USYitong Zhou
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COYour question is a bit hard to understand. Could you show your view and controller code?
      singulars
      1. POIn Rails 3 is it possible or proper to call @variable from another model in a view?
      1. USBenoit Garret
    2. COI'm also a little confused - you could try putting your variables in the application controller in a before_filter? That way they will be applied to all controllers and every action. However there's probably a better way to solve your problem if you post your code.
      singulars
      1. POIn Rails 3 is it possible or proper to call @variable from another model in a view?
      1. USJamsi
    3. COyeah, you could probably try out the Jamsi version, it'd work
      singulars
      1. POIn Rails 3 is it possible or proper to call @variable from another model in a view?
      1. USSaid Kaldybaev
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload