137

I want to get something like this to look nice:

>> ProductColor.all
=> [#<ProductColor id: 1, name: "White", internal_name: "White", created_at: "2009-06-10 04:02:44", updated_at: "2009-06-10 04:02:44">, #<ProductColor id: 2, name: "Ivory", internal_name: "Ivory", created_at: "2009-06-10 04:02:44", updated_at: "2009-06-10 04:02:44">, #<ProductColor id: 3, name: "Blue", internal_name: "Light Blue", created_at: "2009-06-10 04:02:44", updated_at: "2009-06-10 04:02:44">, #<ProductColor id: 4, name: "Green", internal_name: "Green", created_at: "2009-06-10 04:02:44", updated_at: "2009-06-10 04:02:44">]

This doesn't work:

>> ProductColor.all.inspect
=> "[#<ProductColor id: 1, name: \"White\", internal_name: \"White\", created_at: \"2009-06-10 04:02:44\", updated_at: \"2009-06-10 04:02:44\">, #<ProductColor id: 2, name: \"Ivory\", internal_name: \"Ivory\", created_at: \"2009-06-10 04:02:44\", updated_at: \"2009-06-10 04:02:44\">, #<ProductColor id: 3, name: \"Blue\", internal_name: \"Light Blue\", created_at: \"2009-06-10 04:02:44\", updated_at: \"2009-06-10 04:02:44\">, #<ProductColor id: 4, name: \"Green\", internal_name: \"Green\", created_at: \"2009-06-10 04:02:44\", updated_at: \"2009-06-10 04:02:44\">]"

And neither does this:

>> ProductColor.all.to_yaml
=> "--- \n- !ruby/object:ProductColor \n  attributes: \n    name: White\n    created_at: 2009-06-10 04:02:44\n    updated_at: 2009-06-10 04:02:44\n    id: \"1\"\n    internal_name: White\n  attributes_cache: {}\n\n- !ruby/object:ProductColor \n  attributes: \n    name: Ivory\n    created_at: 2009-06-10 04:02:44\n    updated_at: 2009-06-10 04:02:44\n    id: \"2\"\n    internal_name: Ivory\n  attributes_cache: {}\n\n- !ruby/object:ProductColor \n  attributes: \n    name: Blue\n    created_at: 2009-06-10 04:02:44\n    updated_at: 2009-06-10 04:02:44\n    id: \"3\"\n    internal_name: Light Blue\n  attributes_cache: {}\n\n- !ruby/object:ProductColor \n  attributes: \n    name: Green\n    created_at: 2009-06-10 04:02:44\n    updated_at: 2009-06-10 04:02:44\n    id: \"4\"\n    internal_name: Green\n  attributes_cache: {}\n\n"

Thoughts?

4

12 回答 12

260

The y method is a handy way to get some pretty YAML output.

y ProductColor.all

Assuming you are in script/console

As jordanpg commented, this answer is outdated. For Rails 3.2+ you need to execute the following code before you can get the y method to work:

YAML::ENGINE.yamler = 'syck'

From ruby-docs

In older Ruby versions, ie. <= 1.9, Syck is still provided, however it was completely removed with the release of Ruby 2.0.0.

For rails 4/ruby 2 you could use just

puts object.to_yaml
于 2009-08-04T02:09:37.093 回答
102

You should try hirb. It's a gem made to to pretty format objects in the ruby console. Your script/console session would look like this:

>> require 'hirb'
=> true
>> Hirb.enable
=> true
>> ProductColor.first
+----+-------+---------------+---------------------+---------------------+
| id | name  | internal_name | created_at          | updated_at          |
+----+-------+---------------+---------------------+---------------------+
| 1  | White | White         | 2009-06-10 04:02:44 | 2009-06-10 04:02:44 |
+----+-------+---------------+---------------------+---------------------+
1 row in set
=> true

You can learn more about hirb at its homepage.

于 2009-08-04T06:57:51.693 回答
33

Awesome print is nice too if you want an object indented. Something like:

$ rails console
rails> require "awesome_print"
rails> ap Account.all(:limit => 2)
[
    [0] #<Account:0x1033220b8> {
                     :id => 1,
                :user_id => 5,
            :assigned_to => 7,
                   :name => "Hayes-DuBuque",
                 :access => "Public",
                :website => "http://www.hayesdubuque.com",
        :toll_free_phone => "1-800-932-6571",
                  :phone => "(111)549-5002",
                    :fax => "(349)415-2266",
             :deleted_at => nil,
             :created_at => Sat, 06 Mar 2010 09:46:10 UTC +00:00,
             :updated_at => Sat, 06 Mar 2010 16:33:10 UTC +00:00,
                  :email => "info@hayesdubuque.com",
        :background_info => nil
    },
    [1] #<Account:0x103321ff0> {
                     :id => 2,
                :user_id => 4,
            :assigned_to => 4,
                   :name => "Ziemann-Streich",
                 :access => "Public",
                :website => "http://www.ziemannstreich.com",
        :toll_free_phone => "1-800-871-0619",
                  :phone => "(042)056-1534",
                    :fax => "(106)017-8792",
             :deleted_at => nil,
             :created_at => Tue, 09 Feb 2010 13:32:10 UTC +00:00,
             :updated_at => Tue, 09 Feb 2010 20:05:01 UTC +00:00,
                  :email => "info@ziemannstreich.com",
        :background_info => nil
    }
]

To integrate it by default with your irb/rails/pry console, add to your ~/.irbrc or ~/.pryrc file:

require "awesome_print"
AwesomePrint.irb! # just in .irbrc
AwesomePrint.pry! # just in .pryrc
于 2013-02-28T20:43:01.093 回答
12 
>> puts ProductColor.all.to_yaml

Simply works fine!

Source: https://stackoverflow.com/a/4830096

于 2013-07-31T15:11:33.467 回答
10

May also be noted that you can use:

j ProductColor.all.inspect

to output in Json format rather than Yaml

于 2012-07-24T10:51:58.627 回答
9

I think this solution is the most accurate one. You should try this:

puts JSON.pretty_generate Entry.all.map(&:attributes)

This will give you a super nice output compare to YAML format:

[
  {
    "id": 44,
    "team_id": null,
    "member_id": 1000000,
    "match_id": 1,
    "created_at": "2019-04-09 15:53:14 +0900",
    "updated_at": "2019-04-09 15:53:14 +0900"
  },
  {
    "id": 45,
    "team_id": null,
    "member_id": 1000001,
    "match_id": 1,
    "created_at": "2019-04-09 15:53:36 +0900",
    "updated_at": "2019-04-09 15:53:36 +0900"
  },
  {
    "id": 46,
    "team_id": null,
    "member_id": 1000003,
    "match_id": 1,
    "created_at": "2019-04-09 15:56:40 +0900",
    "updated_at": "2019-04-09 15:56:40 +0900"
  },
  {
    "id": 47,
    "team_id": null,
    "member_id": 1000004,
    "match_id": 1,
    "created_at": "2019-04-09 15:56:48 +0900",
    "updated_at": "2019-04-09 15:56:48 +0900"
  }
]
于 2019-04-09T07:27:23.100 回答
8

Hi you can also try this in your script/console if 

>> y ProductColor.all

not working for you.

Try this:

>> require 'yaml'

>> YAML::ENGINE.yamler = 'syck'

then 

>> y ProductColor.all
于 2013-05-06T07:41:01.637 回答
7

I had some troubles making it work so I'll add my two cents to awesome_print add this to your Gemfile, preferably in :development

gem 'awesome_print', require: 'ap'

then in

rails console

you can do

> ap Model.all That's it. However you can also add 

require "awesome_print"
AwesomePrint.irb!

to your ~/.irbrc, this way awesome_print will be required anytime you open the console and you can simply do

Model.all without the need of typing ap

于 2015-03-27T17:57:10.967 回答
6

You may also try the following for a group of objects

Object.all.map(&:attributes).to_yaml

This will give you much nicer output, like

---
id: 1
type: College
name: University of Texas
---
id: 2
type: College
name: University of California

Calling to_yaml on attributes rather than the object itself saves you from viewing the full contents of the object in the output

Or puts Object.last.attributes.to_yaml for a single object

Shorthand is also available: y Object.last.attributes

于 2015-04-27T19:56:06.530 回答
5

Use irbtools gem.

It will automatically format the the console output plus you'll get tons of great features.

于 2013-04-22T10:55:25.990 回答
4

You might want to define ProductColor's inspect method to return something that you find nice. For example:

def inspect
  "<#{id} - #{name} (#{internal_name})>"
end

After which the result of ProductColor.all will display as something like [<1 - White (White)>, ...]. Of course you should adjust the inspect method to your needs, so that it displays all the information you need in a style that you like.

Edit: also if the issue was the lack of line breaks in the output, you might try

require 'pp'
pp ProductColor.all

which should insert linebreaks where appropriate

于 2009-08-03T20:57:36.170 回答
3

To add to Alter Lago's suggestion for using AwesomePrint, If you can't/shouldn't/don't want to add the awesome_print gem to your project's Gemfile, do this:

gem install awesome_print

Edit ~/.irb.rc and add this:

$LOAD_PATH << '/Users/your-user/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/gems/1.9.1/gems/awesome_print-1.1.0/lib'

require 'awesome_print'

(Making sure the path and version are correct, of course)

于 2013-04-09T19:36:55.560 回答