test if record exists in joined table

rubyonrails-talk
1

in my layout i wanna test if the user has a profile so when he clicks profile my app know whether to present him with a show + link to edit the exisiting profile, or just a form for new profile ~ thanks

2

in my layout i wanna test if the user has a profile so when he clicks profile my app know whether to present him with a show + link to edit the exisiting profile, or just a form for new profile ~ thanks

How do you access the user's profile? If it is @user.profile (or something similar) then @user.profile.nil? should do it.

Colin

3

yikes, i dunno how @user got instantiated, i forgot to say i’m in a view, i dunno if i’m allowed to do this in a view or not: <% if Profile.find_by_user_id(current_user.id) %>

4

yikes, i dunno how @user got instantiated, i forgot to say i'm in a view, i dunno if i'm allowed to do this in a view or not: <% if Profile.find_by_user_id(current_user.id) %>

You can do anything you like in a view, but what is wrong with <% if current_user.profile.nil? %>

How many times do I have to ask you not to top post?

Colin

5

Sorry Colin, It’s the goolge default When you click reply the cursor flashes on a blank line with quoting below, that’s why i always forget but I’ll try to remember from now on Do I have to test for nil like that I’d rather use find or find_by more absolutely ~ thanks (merry christmas)

6

It is not a matter of how you test for nil, it is a matter of how you access the profile. You suggest using Profile.find_by_user_id(current_user.id) but you can just do current_user.profile. It is the same thing but much easier to understand. You can test for nil any way you like.

Colin

7

Thanks colin, happy holidays again ha ha Ok so then i’m using if current_user.profile? but the snippet is causing the error application.html.erb:59: syntax error, unexpected keyword_ensure, expecting end-of-input, even though application.html.erb is only 57 lines

<% user_signed_in? %> <% if current_user.profile? %> <%= “profile found” %> <% else %> <%= “profile not found” %> <% end %>

<%= current_user.email %>
  • <%= link_to('Profile', user_profile_path ) %>
  • Account
  • Messages
  • <%= link_to('Sign out', destroy_user_session_path, method: :delete) %>
<% else %>
<%= link_to('User sign in', new_user_session_path) %>
<% end %>
8

There is no matching 'if' for this 'end'.

Colin

9

what does this mean without the if <% user_signed_in? %>

10

what does this mean without the if <% user_signed_in? %>

It is just a statement that evaluates to true or false and does nothing with the result.

Colin

11

thanks