#284 Active Admin

Sep 19, 2011 | 12 minutes | Administration, Plugins

Active Admin allows you to quickly build an admin interface with just a few commands. Not only does it look great, but it is very customizable as shown in this episode.

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Luan Santos about 13 years ago

Can I integrate with anything other than devise?

Does it works with other ORMs? (didn't have the time to test it yet)

Ryan Bates about 13 years ago

You can change the current_user_method in the config/initializers/active_admin.rb file to use something else. I'm not sure what other dependencies Active Admin has on Devise though.

Benjamin Yu about 13 years ago

any thoughts on choosing between activeadmin and railsadmin?

Ryan Bates about 13 years ago

Rails Admin looks great as well, but I didn't feel it was ready to be covered. A gem hasn't been recently released. I will probably cover it in a future episode after it reaches a stable point.

bonyiii about 13 years ago

What your opinion about active scaffold? How good is it compared to activeadmin?

Doug Puchalski about 13 years ago

I used ActiveScaffold on a large project in Rails 2.3. I was able to customize everything I needed but it wasn't easy for complex cases. I believe the main fork is not being upgraded to Rails 3.

I've been using ActiveAdmin and agree that it's beautiful and initially feels like a great choice to get started. However, I found myself spending a lot of time fighting the gem to build an app around it. I think it's best suited to use as a customizable scaffold system and that's it. One problem I had was that it uses a DSL-generated layout, so you can't integrate it easily into an existing app. It's really designed around management of resources, not as a general-purpose application framework. All in all, very powerful but it makes things that are easy in Rails a bit harder sometimes.

I'm investigating a switch to Rails Admin myself. It seems to be a bit less automatic and more the "Rails Way", but it may be too early to say.

Dom about 13 years ago

I agree with Doug Puchalski, I've been using Active Admin for some time now, and also found myself fighting with it constantly to get it to do things I wanted. I have several blog posts dedicated to some workarounds I found.

Active Admin looks beautiful and works great if you don't want to push it too far. I recently dropped Active Admin in favor of a manual hand-coded version for several reasons. I found the release cycle very slow. I also didn't like the dependence on Formtastic and Devise.

Kudos to the guys who put it together though, it really is a nice gem. It just doesn't fit a project that needs a lot of customizing.

Cameron Woodmansee about 13 years ago

How does activeadmin handle many-to-many relationships?

Gethryn Ghavalas about 13 years ago

Did you ever get anywhere with this question? I'm struggling with the same thing.

Sjors Branderhorst about 13 years ago

Struggling too. Did you get anywhere sofar?

Matt Bridges about 13 years ago

ActiveAdmin is absolutely amazing! Thank you for doing a screencast on this.

On a side note, are you aware of the issues that ActiveAdmin has with Rails 3.1 on Heroku? I've been playing around with it for some time and haven't found a reasonable answer.

Ammar about 13 years ago

I second this! I've spent hours trying to get it to deploy but keep generating errors! Something to do with SASS i think.

Did you come up with a solution?

Bernd Suenkel about 13 years ago

Works for me on heroku, application.rb

Bundler.require *Rails.groups(:assets)

Matt Bridges about 13 years ago

I am running into the error discussed in this area of the devcenter.

http://devcenter.heroku.com/articles/rails31_heroku_cedar#troubleshooting

I am not sure exactly how to resolve or debug at this time, but I will report back if I find anything.

Matt Bridges about 13 years ago

[update]

ActiveAdmin does work with this command, just not the rake assets:precompile. Just make sure you migrate Heroku's database, too.

Jaime Iniesta about 13 years ago

Moving the sass-rails gem out of the :assets group as @autodidakto says below lets me run the db migrations, but I'm still having the rake assets:precompile issues on heroku cedar.

There is an open issue for that

Matt Bridges about 13 years ago

Not yet, but I will be trying @bnerd's solution first.

autodidakto about 13 years ago

move
gem 'sass-rails', " ~> 3.1.0"

out of the :assets group.

assets load last, active admin needs sass to load sooner.

Giang Nguyen about 13 years ago

instead of moving sass-rails outside the :assets group, we just need to put 'activeadmin' after that group, does it work?

Paul Morganthall about 13 years ago

There's quite a bit of discussion of sass in the GitHub issues.

I'm not yet running 3.1, but I got around a similar sass problem in 3.0 by generating the assets locally, then putting this in an initializer:
Sass::Plugin.options[:never_update] = true

Max Gonzih about 13 years ago

For running active_admin on Heroku add that line to your config/environments/production.rb.

          ruby
        
config.assets.precompile += ['active_admin.js', 'active_admin.css']

And after that run rake assets:precompile, add public/assets to git, push to heroku and enjoy.

Also check that option in production.rb (should be false for heroku).

          ruby
        
config.assets.compile = false

John van Arkelen about 13 years ago

Thanks for another great video!

I have an issue though: I have a country which has_many regions. The region table in active admin shows the listbox with countries nicely, but it shows hash values like "Country:00x000345" instead of the actual countries. What am I doing wrong here? Thanks!

Filip Skokan about 13 years ago

You might wanna check the documentation for this but in general you need to implement one of the following methods to_s, name, label, to_label to your model. ActiveAdmin will go through these to find a suitable text label for your model

Jason Salas almost 11 years ago

Didn't ask it myself, but helped me. thanks!

uchenna about 13 years ago

I they no way to customize the fields in the creation of products page(new page)

Zolzaya Erdenebaatar about 13 years ago

Nice. Thank you. I'm just wondering how to use active admin with MongoID?

makkaroni about 13 years ago

Thank you very much for this cast, Ryan!
I am using rails 3.0.10.
It seems, ActiveAdmin overwrites my active-admin.css file every time I reload a page.

I am trying to organize the section panel on the dasboard beneath each other. Therefore I tried to wrap them into custom divs.
Is there a better way to achieve this?

Paul Morganthall about 13 years ago

Put your custom css in a separate file and tell ActiveAdmin to load it: https://github.com/gregbell/active_admin/issues/261

David Tuite about 13 years ago

I'm so confused now! I'm starting a new project at the moment and I want to use Sorcery from the last video and Active Admin from this one but Active Admin depends on Devise! Booo!

What to do.....

Bob Firestone about 13 years ago

I did exactly this. My public user models are made with sorcery. I then used activeadmin and devise to build the back office for me to use.

If you are ok with separate user and admin_user models this isn't a problem.

Zach Morek almost 13 years ago

Did you have any issues with the two gems conflicting or was it pretty straight forward?

szorlu about 13 years ago

Thanks Ryan,
Input for datetime is blank, is it possible to show current datetime onload?

Fritz about 13 years ago

Hey Ryan!

As usually your screencast are great learning tools, the rails community is so generous with their time and expertise.

I have been playing around with active_admin and really like it.... Kudos to GregBell!!

On the gotcha with stylesheet issue, I found that moving the active_admin.css.scss to the /vendor/assets/stylesheet also solved AA overriding my css.

Thanks again for all you do!

HenrySource about 13 years ago

I want to rename the resources by use i18n. How should i do?

mindhalt almost 12 years ago

Translations for Active Record Models

This method will help you, if i understood you correctly.

Marc MacLeod about 13 years ago

Another really great screencast, thanks!

I would LOVE to see Mongoid support. We're using mongoid in a few companies I work for and active admin would be a great addition. I see there was talk in github issues of including additional ORM support back in June - I wonder what's happened with that?

Fer Glez about 13 years ago

Hi, there! Excellent Railscasts as always!

I've been considering some ORMs for Rails during long time (experimented with Hobo, ActiveScaffold, even switched to Python to give it a try with Django). ActiveAdmin's backend looks nice, but must recognise I'm currently using Typus (https://github.com/typus/typus) and I can say it's fully customizable (ready to use for most of cases). It really deserves to have a deep look.

Thanks and congrats for these awesome lessons (following every week!)!!

Dennis Major about 13 years ago

Bare bones Devise vis a vis Sorcery:

Bare Bones Devise

Ken Hart about 13 years ago

I really like the gem but it is extremely slow for me. Is anyone else experiencing this?

Hyoseong Choi about 13 years ago

me, too.

Ken Hart about 13 years ago

https://github.com/gregbell/active_admin/issues/278
https://github.com/gregbell/active_admin/issues/170

Artellectual about 13 years ago

yeah having issues with this too. i've been trying rails_admin its pretty nice too.

i think both of them are very early/unstable. but feel that rails_admin is abit more solid.

Ignacio Mella about 13 years ago

Nice screencast as always! I've been using ActiveAdmin for a while and it's a great admin interface. The only downside is that it doesn't get along to well with CanCan, it would be great to have different roles that can access the admin interface of an app and limit their actions with CanCan.

Martin Jarvis about 13 years ago

ActiveAdmin is great when you need a set of screens to let you manage your data directly. It saves having to build and test extra screens that you never plan to roll out to general users. If you spend too much time customising ActiveAdmin then perhaps you should be building a custom screen for that function.

Akash Kamboj about 13 years ago

Hi Ryan, Thanks so much for another great screencast. I totally learnt Rails following your screencasts. I noticed that ActiveAdmin using devise, what's the best way to authorize admin panel to the users who have roles of Administrator. I was using CanCan. Do active admin have anything for Authorization or do we have to integrate it through CanCan?

Andrew Curley about 13 years ago

Does anyone have some guidance as to how to integrate Active Admin with Sunspot? I think it would be great if the filters on the right hand side of each index would search Solr rather than the underlying SQL.

Brandon Farmer about 13 years ago

Is it possible to do nested resources with activeadmin?

Pourrier François almost 13 years ago

on level nested only...

akkacj about 13 years ago

I have lambda scope in myModel. How can I add lambda param to scope section in ActiveAdmin.register myModel?

Stephen Hunter over 10 years ago

I wish someone had an answer for this

Stephen Hunter over 10 years ago

Not well documented at all, but I found an answer so I'll answer here because Google brought me here:

ActiveAdmin.register Post do

scope :posted_by_tom_cruise do
Post.posted_by("Tom Cruise")
end
...

joelbasson about 13 years ago

I get an error when I try view the admin page for my model. Any idea what could cause this?
undefined method `generate_association_input_name' for #ActiveAdmin::FilterFormBuilder:0x0000010411a440

Edgars Beigarts about 13 years ago

Use formtastic 1.2.x - https://github.com/gregbell/active_admin/issues/499

Sergey Averyanov about 13 years ago

When I follow create or edit link I get the following error: "undefined method `_input' for #ActiveAdmin::FormBuilder:0x105b9a040" in gems/activeadmin-0.3.2/app/views/active_admin/resource/edit.html.arb

Using formtastic 1.2.4 seems to make no affect -- the error still occurs
Any ideas?

Sergey Averyanov about 13 years ago

It seems that the error occurs while rendering input for field with custom pgsql type (something like CREATE TYPE foo_type AS ENUM ... )

Sergey Averyanov about 13 years ago

Yes, adding f.input :foo, :as => :string to form for such a field resolved the issue

Leonel Santos about 13 years ago

Two questions: 1) how to display debug current_user. I went inside the gem and tried to insert it on the views but it doesn't display anything. 2) how to preset a value in the controller. I already tried in the regular controller and in the active admin controller override and it doesn't work: something like @website.user_id = current_user.id

phillyslick about 13 years ago

I'd like to issue a warning:

This is nice for a very simple CRUD admin. Once you get to customizing it to fit your admin, it gets fairly involved fast.

The documentation comes up short, which shows in the amount of issues raised on github.

Ask yourself if you'd rather spend the time designing your own GUI rather than fussing with Activeadmin.

Joe Sak about 13 years ago

Ryan, your gotcha applies to the application.js manifest as well

And another gotcha: if you have 'will_paginate' in your Gemfile, it must be set to '3.0.pre2'

Thanks for another informative 'cast!

Troy Anderson about 13 years ago

Hey guys - anyone else try to get it to admin your User or AdminUser models?

It seems to just edit the fields directly, and shows the encrypted password - where RailsAdmin would understand Devise and give you a regular password field that would work for password changes.

I want to use this to admin Users too :)

ideas?

bkno almost 13 years ago

Did you find a solution Troy?

I like Active Admin a lot so far but haven't been able to find any info on editing passwords.

Vibhor Mahajan over 11 years ago

ActiveAdmin.register User do
form do |f|
f.inputs :email, :password, :password_confirmation
f.buttons :commit
end
end

It worked after I added this in the active admin's resource file -
/app/admin/users.rb

Kyle Macey about 13 years ago

What's the best way to handle ActiveAdmin's resources in Rails 3.0.5 under a scope?

ie:

example.com/my_app/admin

I got the routes for the pages themselves, but Images and CSS don't come through. Suggestions?

Paul Morganthall about 13 years ago

A nice enhancement in version 0.3.2, you can turn your site title into a link. For instance to get out of admin mode and back to your regular site:

config.site_title_link = :root

Safew Labs about 13 years ago

I've been trying to add ckeditor to the form. I have tried using the formtastic dsl but the toolbar dosen't appear.I am using rails3-ckeditor.

Benjamin about 13 years ago

Thanks Ryan for this. I had tried the gem before you release this tut and i love it straight off. I have a little problem, maybe you have the answer. How do i add a different role? like user. I have tried following the device way. rails generate devise:views users but it doesn't seem to work. Any ideas?

Michael Harper about 13 years ago

Works great. One thing I had to do in order for "Sign Out" to work properly with Devise was to make the following change in initializers/active_admin.rb:

          ruby
        
config.logout_link_method = :delete

Sachin Singh about 13 years ago

when i sign in admin panel i get this error.I don't know why?

ArgumentError in Admin::DashboardController#index

wrong number of arguments (2 for 1)

activeadmin (0.3.2) lib/active_admin/arbre/context.rb:15:in respond_to?' rack (1.3.4) lib/rack/etag.rb:56:injoin'
rack (1.3.4) lib/rack/etag.rb:56:in digest_body' rack (1.3.4) lib/rack/etag.rb:26:incall'
rack (1.3.4) lib/rack/conditionalget.rb:25:in call' actionpack (3.1.1) lib/action_dispatch/middleware/head.rb:14:incall'

canapif about 13 years ago

Any idea on how to implement massive destroy function?

like checkboxes in front of each entry an a massive destroy button?

Nice Railscast anyway.
thx

Sean Linsley over 12 years ago

That totally exists now. They're called Batch Actions :]

lugardosite about 13 years ago

Very!, Very! Nice =)

rodrigo-umanni about 13 years ago

it's like they said, i've been working with this gem and one advice, if you have to customize too much your admin don't use this gem, it depends on formtastic and metasearch, which gives a lot of work to understand how works and make simple things in rails very complicated.
use just for simple projects.

timmasterson about 13 years ago

So I see lots of people asking about roles and limiting what a specific user can see. Has anyone found a way to do this with active admin? At this point I'm not sure it's easily done.

timmasterson about 13 years ago

Roles:

https://github.com/gregbell/active_admin/wiki/How-to-work-with-cancan

Evgeniy Shurmin about 13 years ago

Can I integrate ActiveAdmin in views/layout/application.html.erb

<html><head> <title> .... </title> </head><body> ... <div class="active_admin"> active_admin yield </div> ... </body> </html>

Nicolas Garnil almost 13 years ago

Does ActiveAdmin supports sorting through a belongs_to column?

Sean Linsley over 12 years ago

Kind of. It will sort by the ids of the parent model, instead of something more useful (like alphabetical sorting).

Aleks almost 13 years ago

Does someone of you use this gem and has custom validations in a model?

I have something like this, but ActiveAdmin ignores it.

          ruby
        
validate :validate_me

def validate_me
  self.errors[:base] << "My error message" if my_validation(self.id) == true
end

Sean Linsley over 12 years ago

Perhaps because you're not using the add function? The below format works fine for me.

          ruby
        
validate :name_must_be_cool

def name_must_be_cool
  errors.add(:name, 'Try again!') unless is_cool?(name)
end

rajeev48 over 12 years ago

How I can Replace ActiveAdmin Default (login)Page Into my own Customize Login Page.Plz help?

Eric Holmes over 12 years ago

The simplest method is to copy the app/views/active_admin/devise/sessions/new.html.erb file (you can find it here https://github.com/gregbell/active_admin/blob/master/app/views/active_admin/devise/sessions/new.html.erb) to your application directory, then just make any changes that you might need.

Internally, active admin uses devise, so you can go as far as just doing away with active admin's devise config, by replacing the following code in your routes.rb file.

          ruby
        
  # devise_for :admin_users, ActiveAdmin::Devise.config
  devise_for :admin_users

And updating config/initializers/active_admin as you see fit.

Omais over 12 years ago

Hi
i'm using ActiveAdmin in my application. Reached to the dashboard page but when i have run "rails g active_admin:resource product" command, after that server is not running. I'm using Rails 3.2, Ruby 1.9.2. Can somebody help me... Thanks

/home/ali/MySite/app/admin/products.rb:1:in ': uninitialized constant Product (NameError) from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin/application.rb:161:inblock in load!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin/application.rb:161:in each' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin/application.rb:161:inload!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin/application.rb:187:in routes' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin.rb:78:inroutes' from /home/ali/MySite/config/routes.rb:2:in block in ' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:282:ininstance_exec' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:282:in eval_block' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:260:indraw' from /home/ali/MySite/config/routes.rb:1:in ' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:40:inblock in load_paths' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:40:in each' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:40:inload_paths' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application/routes_reloader.rb:16:in reload!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application.rb:108:inreload_routes!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin/reloader.rb:34:in reload!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activeadmin-0.4.3/lib/active_admin/reloader.rb:61:inblock in attach!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:429:in _run1902147173993390372prepare4025180163458367323callbacks' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:405:in__run_callback' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:385:in _run_prepare_callbacks' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:81:inrun_callbacks' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.2.3/lib/action_dispatch/middleware/reloader.rb:74:in prepare!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/actionpack-3.2.3/lib/action_dispatch/middleware/reloader.rb:48:inprepare!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application/finisher.rb:47:in block in module:Finisher' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:30:ininstance_exec' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:30:in run' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:55:inblock in run_initializers' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:54:in each' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/initializable.rb:54:inrun_initializers' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/application.rb:136:in initialize!' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/railtie/configurable.rb:30:inmethod_missing' from /home/ali/MySite/config/environment.rb:5:in ' from /home/ali/MySite/config.ru:4:inblock in ' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:51:in instance_eval' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:51:ininitialize' from /home/ali/MySite/config.ru:1:in new' from /home/ali/MySite/config.ru:1:in' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:40:in eval' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/builder.rb:40:inparse_file' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/server.rb:200:in app' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands/server.rb:46:inapp' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/server.rb:301:in wrapped_app' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/rack-1.4.1/lib/rack/server.rb:252:instart' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands/server.rb:70:in start' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:55:inblock in ' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:50:in tap' from /home/ali/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.3/lib/rails/commands.rb:50:in' from script/rails:6:in require' from script/rails:6:in'

matoeilD over 12 years ago

same for me , can anyone help?

Sean Linsley over 12 years ago

The command rails g active_admin:resource product doesn't actually create a model; it just creates the app/admin/products.rb file so Active Admin renders a GUI for this resource when you start your server. You've got to run rails g model product first.

rhnorment over 12 years ago

Ryan -- I'm a big fan of this site, as you know from our email exchanges. So, I offer some friendly feedback from a moderate level Rails developer.

This cast was a nightmare to undo. I hod neither an idea about the dependency on Devise, nor the initializers the install method creates.

As you already know, you have a huge middle (moderate level) dev community you could reach. I'id personally pay almost anything to have things casted at my level.

The Bell Curve of Rails development reaches people like me -- and you should tap the market that is most willing to pay.

I know you are hesitant to recommend best-practices as to not divide the Rails community. I certainly respect that.

But the fact remains that every industry has its best practices, and I wish your and your cohorts could standardize on some so that your casts evolve from those best practices In my view, these casts are the means to an end, and we all want to reach the end.

Nonetheless, keep keep up the excellent work independent of my daft request.

Kind Regards, Hunt

Joni Farizal over 12 years ago

Ryan, or anybody who can help :)

i'm planning to use active admin for my website. For some forms, i want to initialize its field assigned with its user information.

For example I have 3 tables, admin_users, agents, packets, admin_users has_one agents, and agents has_many. In Packet new form, i want to assign agent_id field with current agent.

I've been trying to assign before_create in packet model but none is work. So how can I assign value before showing create page?

Sean Linsley over 12 years ago

Assigning before_create (etc) callbacks in your model work just fine with ActiveAdmin. What exactly is your problem?

kisin about 12 years ago

i have an existing app with sqlite database and i want to create a new app only for active admin.
can i use the database from the first app?
if yes, can you show me how to do it?

Igor F. about 12 years ago

I have recently created plugin for AA, which helps to easy and dynamicly change sidebar position to left or right. I put sources here https://github.com/Fivell/active_admin_sidebar

reejosamuel almost 12 years ago

Hey does anyone know how to show the selection toggle next to each row for batch actions when using the custom table columns.

This is there by default but disappears as soon as we customize. I'm not able to find it in the documentation.

reejosamuel almost 12 years ago

Found it selectable_column inside the index do block

Rosen Tihomirov almost 12 years ago

Hey Ryan,

thank you for the great screencast.

It would be nice if you make another screencast on active_admin on some advanced topics like file uploads and integration with globalize3.

Cheers

Zach Nolan over 11 years ago

Hey Everyone,

I'm new to ruby on rails so forgive me. How does active admin know where your products are and how does it pull them in? I see after you setup active admin the products were already in there.

Thanks!

jbstate over 11 years ago

After doing everything that is said in this tutorial, and after running the rake db:migrate command, I get an error that says:
NoMethodError in Active_admin/devise/sessions#new
Showing
/var/lib/gems/1.9.1/gems/activeadmin0.5.1/app/views/active_admin**/devise/sessions/new.html.erb where line #7 raised:

undefined method `username' for #AdminUser:0xa2ccb6c

I am new to rails, and not sure how to solve this. Any help is appreciated.
Thanks

viralgandhi over 11 years ago

please provide solution as early as possible

ArgumentError in Active_admin/devise/sessions#new
Showing C:/Ruby193/lib/ruby/gems/1.9.1/gems/activeadmin-0.6.0/app/views/layouts/active_admin_logged_out.html.erb where line #9 raised:

different prefix: "C:/" and "G:/rails_workspace/newWorkspace/myActAdmin/app/assets/stylesheets"
(in G:/rails_workspace/newWorkspace/myActAdmin/app/assets/stylesheets/active_admin.css.scss)

kanishkkumar35 over 11 years ago

How do we write a simple ruby code that should run on index page despite of its scopes, it should just run,i know its too lame to ask, but dint find anywhere :( do help ..actually i wnat to save a value in session variable , but the session value is set when scope returns some records else it doesnt

Benjamin Fleischer over 11 years ago

ActiveAdmin helped us get up and running quickly, but once we had use cases outside of very simple CRUD, it became nightmarish.

You can't inherit pages e.g. for an STI parent class
There's no obvious base application controller
Having everything in the app/admin/foos.rb quickly makes the file huge. Would love some separation of concerns
Its conventions are so different from rails
It's pretty hard to customize. It requires a lot of reading source code and hacking
It overwrites any existing login/logout routes you have

Do read this: http://staal.io/blog/2013/02/26/mastering-activeadmin/

I did try rails_admin first because it seemed more customizable but it didn't have all the features I wanted

will over 11 years ago

Seems line image attachments is a bit undercooked in active admin. Any examples of a good way to to it, including deleting & preview.

Currently im using paperclip & editing the form like this:

f.input :image,
:as => :file,
:hint => f.template.image_tag(f.object.image.url(:medium))

I could keep going and add some JS and a delete button, but it seems like something the framework should administer

Pierre over 11 years ago

When creating a new product in this example, released at Date comes with four fields. How do I format to get only one input field for date. I do not need the time
Please assist
Pierre

The Mini John about 11 years ago

I'm getting a Session Error. From what i read this is a problem with simple_from and Active Admin.. Is there any Solution ?

Sebastián González almost 11 years ago

If anyone is interested in a WYSIWYG editor compatible with activeadmin, check out https://github.com/stefanoverna/activeadmin-wysihtml5, is extremely good!

Vell over 10 years ago

I didn't see any documentation on how to tweak controllers. Where might I be able to find something like that? for instance, redirecting to a different route.

will over 10 years ago

@vell http://activeadmin.info/docs/8-custom-actions.html

tryceattack over 9 years ago

Does anyone know of a tutorial that is more up-to-date with Rails 4. I'm having problems figuring out how to a simple CRUD with the strong parameters.

Hassan9229 over 8 years ago

I want to save the filters params , that applied on a model. How can i get these params. Do anyone have any idea about this.