Forum: Ruby on Rails How to display error in view for an instance

Hello,

How can we display the errors in a view if that view contains one
instance of type member and an array also of instances from the same
model. In my app I have a form which accepts a member data for
registration for a family on the top and at the end of the screen in the
same form I accept the data for the rest of the family members which
also belong to the same model. After the validation I get the errors for
'@member' but not the '@familt_members'.
@member is created as

@member=Member.new

and @member_list is created as :

@member_list=[]
5.times{
@member_list<<Member.new
    }

After the validations how do I access the errors related to each
instance in the array?

thanks.

On Jul 3, 2012, at 1:59 AM, renu mehta wrote:

>
> instance in the array?
What do you see if you iterate over the members of the array, like this 
(in a view, just for debugging purposes)?

  <%- @member_list.each do |member| %>
  <%= member.inspect %>
  <%- end %>

I am guessing that each member will carry its own hash of errors, and 
you should see them when you do this. Then it's just a matter of 
iterating them in your view to build the error list per member.

Walter

Walter Davis wrote in post #1067201:
> On Jul 3, 2012, at 1:59 AM, renu mehta wrote:
>
>>
>> instance in the array?
> What do you see if you iterate over the members of the array, like this
> (in a view, just for debugging purposes)?
>
>   <%- @member_list.each do |member| %>
>   <%= member.inspect %>
>   <%- end %>
>
> I am guessing that each member will carry its own hash of errors, and
> you should see them when you do this. Then it's just a matter of
> iterating them in your view to build the error list per member.
>
> Walter

This is what I get:

#<Member family_member_id: nil, member_first_name: "", member_last_name: 
"", security_question_answer: nil, created_at: nil, updated_at: nil, 
member_gender: nil, member_dob: nil, security_question_id: nil, 
native_language: "", family_id: nil, is_child: false, is_family_head: 
false, member_middle_name: "", member_email: nil, relation_name: "", 
marital_status: nil>

But nothing about errors. And following code in the loop does not show 
anything.

<% member.errors.full_messages.each do |msg| %>

      <span style="color:red;"><%= msg %></span>
    <% end %>

On Jul 3, 2012, at 1:05 PM, renu mehta wrote:

>>  <%- end %>
> "", security_question_answer: nil, created_at: nil, updated_at: nil,
>      <span style="color:red;"><%= msg %></span>
>    <% end %>
>

At this point in the cycle, have you already tried to save these 
members? Or are they being saved through an association? I don't think 
the errors are populated on any AR object until you actually try to 
save, because those validations only run within the save cycle.

Walter