How to Properly Configure Rails 4.1 Enums in ActiveAdmin

Question

I've got a Rails 4.1 app in which I use an enum to represent the privacy level of an object.

In my schema:

t.integer "privacy_level", default: 0

In my model:

enum privacy_level: { privacy_private: 0, privacy_trusted: 1, privacy_public: 2 }

In my ActiveAdmin register file:

index do
  column :privacy_level
  default_actions
end

form do |f|
  f.inputs "Edit My Model" do
    f.input :privacy_level
  end
  f.actions
end

On the ActiveAdmin index page, it works great. The privacy level of each object shows up as "privacy_private", "privacy_trusted", and "privacy_public".

However, when I try to edit an object, the input type is a number box with up and down arrows which allow me to put any integer in, regardless of whether or not the integer is a valid privacy level (even negative values).

What I would like to see is a dropdown (select) input with the three enumerated string values I defined in my model.

score 60 · Accepted Answer · edited Feb 16 '19 at 14:44

60

Building off of Jack's answer, here's what worked for me. Say your ActiveRecord model is Tweets:

f.input :privacy_level, as: :select, collection: Tweet.privacy_levels.keys

Key things to note here:

your ActiveRecord has a useful dictionary (available at enum_name.pluralize) of enum keys to values.
using strings (and ignoring the underlying integer representation) makes it easier to write to the enum value.

edited Feb 16 '19 at 14:44

Deepak Mahakale

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answered May 22 '14 at 06:42

AlexeyMK

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This is the right answer. I didn't notice the plural (levels) at first. – Sebastian Jul 11 '14 at 17:12
12

:include_blank => false would help in addition – Amol Pujari Aug 02 '14 at 08:49
1

And remember to permit the param in your admin definition :) – Jeewes Sep 28 '14 at 15:10
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It does not work for me, it throws "'1' is not a valid (attribute name)" – mspanc Feb 04 '15 at 16:10

score 40 · Answer 2 · edited Feb 16 '19 at 14:45

40

In order to use enums in ActiveAdmin's filters use:

filter :level, as: :select, collection: Model.levels

assuming an enum attribute named level

This will make sure to actually put the integer value in the query and not the key name.

edited Feb 16 '19 at 14:45

Deepak Mahakale

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answered Aug 22 '14 at 00:23

ChrHansen

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jimagic · Answer 3 · 2014-05-01T19:54:21.477

7

do this:

f.input :privacy_level, :as => :select, :collection =>  privacy_level.keys.to_a

edited May 01 '14 at 19:54

answered May 01 '14 at 19:47

jimagic

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Yeah, that makes sense. I can set privacy level in the console with my_model.privacy_level = "privacy_public". It would make sense that I can use a select box with strings to set the privacy level. Thanks! – Pop-A-Stash May 01 '14 at 20:42
2

you welcome, glad to help, i have upvoted your question so u can get the point, please do same for me, thanks – jimagic May 01 '14 at 20:45

How to Properly Configure Rails 4.1 Enums in ActiveAdmin

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