Rails - passing values into loops

Question

Specifically, on an index page, you might have

@users.each do |user|
 render 'layouts/shortprofile'
end

where short profile contains data from the user and other related models.

The partial is trying to read from the index method in the user model, but there is no variable defined in that method for an individual user. It feels like the |user| block var should read into the partial, but it doesn't seem to.

For example, in the partial I might want to have something like -

user.blogs[1..3].each do |blog|
  blog.title
  blog.created_at
  .....

... but I don't know how to get the user value into the partial.

I want to keep it as a partial cos it's displayed in several contexts and I want to be DRY.

gef · Accepted Answer · 2014-08-27 16:50:55Z

3

Pass it to your partial using the local variable, and make sure you explicitly specify partial:

e.g/

@users.each do |user|
 render partial: 'layouts/shortprofile', locals: { user: user }
end

More info here: http://guides.rubyonrails.org/layouts_and_rendering.html#passing-local-variables

edited Aug 27, 2014 at 16:50

answered Aug 27, 2014 at 15:34

gef

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2 Comments

dan Over a year ago

Hi gef - thanks for this - I've tried it but have screwed it up somehow - I've updated the question in response, and am reading the docs. cheers, Dan

gef Over a year ago

Hey @RADan you need to include partial: when passing additional options. I've just updated the answer to show :)

digijim · Accepted Answer · 2014-08-27 16:43:24Z

0

You could change your partial to "_user.html.erb" and move it to the "views/users" folder with your index view, and replace the @users.each block with this:

<%= render @users %>

...which should successfully pass each user object to the user variable in the partial.

answered Aug 27, 2014 at 16:43

digijim

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