Ruby on Rails

On 22 November 2015 at 12:49, fugee ohu <fugee279@gmail.com> wrote:
> although the object's not null, the syntax you gave me "category.first.name"
> doesn't work "undefined method `name' for 0:Fixnum"

What did you see when you tried my suggestion?

Colin

>
> On Sunday, November 22, 2015 at 3:44:22 AM UTC-5, Arvind Vyas wrote:
>>
>> As I told you in earlier check what object you are getting and fetch the
>> name accordingly.
>>
>> For example if I got category object is like [#<Category id: 1, name:
>> "2012-08-31 20:34:15">]
>> so in simplest way I can write category.first.name but in this case you
>> have to check cateroy object should not nil.
>>
>> Also you can check this example it has also same issue as you are looking
>> form
>> http://stackoverflow.com/questions/12124941/undefined-method-name-for-array-in-activeadmin-row
>>
>> Thanks and Regards,
>>
>> Arvind Vyas
>> Ruby On Rails Developer
>> Mob ; 8511289155
>>
>> On Sun, Nov 22, 2015 at 12:54 PM, fugee ohu <fuge...@gmail.com> wrote:
>>>
>>> so how do i dereference the array in the view to display the name
>>>
>>> On Sunday, November 22, 2015 at 1:22:17 AM UTC-5, Arvind Vyas wrote:
>>>>
>>>> category object is coming as an array so first check that
>>>>
>>>> Thanks and Regards,
>>>>
>>>> Arvind Vyas
>>>> Ruby On Rails Developer
>>>> Mob ; 8511289155
>>>>
>>>> On Sun, Nov 22, 2015 at 2:54 AM, fugee ohu <fuge...@gmail.com> wrote:
>>>>>
>>>>> <h2>Categories</h2>
>>>>> <%= @categories.group_by(&:parent_id).each do |category| %>
>>>>> <%= category.name %><br>
>>>>> <% end %>
>>>>>
>>>>> This code results in ActionController returning
>>>>>
>>>>> undefined method `name' for #<Array:0xb48bf628>
>>>>>
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>>>>
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