RailsAdmin Gem - Customize multi-select dropdown with conditional values only

Question

We have implemented gem 'rails_admin', '~> 1.4.3' in our application. The issue we are facing here is in customizing the output values in the multi-select dropdown in rails admin.

For example: Student has many Teachers. So while creating a Student record we will have a multi-select dropdown of Teachers. Here we only want those Teachers who are in active state, not all the teachers.

To achieve the same, we have implemented something like below in the student_admin.rb file.

create do
  field :name do
    required true
  end

  field :teachers do
    visible do
      Teacher.where(state: 'active')
    end
  end
end

The above code neither gives any error nor filters the only active teachers.

Can someone help to get the expected result here. Any suggestion will be highly appreciated.

Guillermo Siliceo Trueba · Answer 1 · 2022-10-20T15:19:41.257

1

There you go:

edit do
  field :name do
    required true
  end

  field :teachers do
    associated_collection_scope do
      proc { |scope| scope.where(state: 'active') }
    end
  end
end

edited Oct 20 '22 at 15:19

answered Oct 19 '22 at 15:01

Guillermo Siliceo Trueba

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Thanks for response - I have added above code block but still it doesn't filter out teachers as per the `where` condition. – huzefa biyawarwala Oct 20 '22 at 08:45
Can you try to change the name of the block from create to edit? – Guillermo Siliceo Trueba Oct 20 '22 at 15:19
Did it - still same - nothing changes - all active and inactive teachers are displayed in dropdown. – huzefa biyawarwala Oct 21 '22 at 09:42
Do you have more than one config for this model? Can you update your answer with the entire block of code? – Guillermo Siliceo Trueba Oct 25 '22 at 21:15

RailsAdmin Gem - Customize multi-select dropdown with conditional values only

1 Answers1