/scribe

Pretty print tables of Elixir structs and maps.

Primary LanguageElixirMIT LicenseMIT

CI Hex.pm Hex.pm

Scribe

Pretty-print tables of Elixir structs and maps. Inspired by hirb.

Installation

  1. Add scribe to your list of dependencies in mix.exs:
def deps do
  [
    {:scribe, "~> 0.10"}
  ]
end

Usage

Print a list of maps or structs as a table. Header columns are taken from the keys of the first element.

iex(1)> data = [%{key: "value", another_key: 123},
...(1)> [%{key: "test", another_key: :key}]
iex(2)> Scribe.print(data)
+----------------+-------------+
| :another_key   | :key        |
+----------------+-------------+
| 123            | "value"     |
| :key           | "test"      |
+----------------+-------------+

Useful for printing large collections, such as results of database queries

# %User{id: nil, email: nil}

iex(1)> User |> limit(5) |> Repo.all |> Scribe.print
+-------------+----------------------------+------+
| :__struct__ | :email                     | :id  |
+-------------+----------------------------+------+
| User        | "myles_fisher@beahan.com"  | 5171 |
| User        | "dawson_bartell@lynch.org" | 4528 |
| User        | "hassan1972@langworth.com" | 1480 |
| User        | "kiera.schulist@koch.com"  | 2084 |
| User        | "cynthia1970@mann.name"    | 6599 |
+-------------+----------------------------+------+

Use Scribe Automatically

Scribe can override Inspect to automatically return maps in table format. Add the following to your config/dev.exs:

config :scribe,
  compile_auto_inspect: true,
  auto_inspect: true

Temporarily disable in the shell if needed:

iex(1)> Scribe.auto_inspect(false)
:ok

Note: Auto-inspect will not work in production Distillery releases. Leave it out of your prod.exs

Pagination

Scribe uses pane to paginate large tables. Use with Scribe.console/2.

# %User{id: nil, email: nil, first_name: nil, last_name: nil}
iex(1)> User |> limit(5) |> Repo.all |> Scribe.console

+-------------+------------------------+-------------+-------+------------+
| :__struct__ | :email                 | :first_name | :id   | :last_name |
+-------------+------------------------+-------------+-------+------------+
| User        | "celestine_satterfield | "Gene"      | 9061  | "Krajcik"  |
| User        | "lynn1978@bednar.org"  | "Maeve"     | 9865  | "Gerlach"  |
| User        | "melisa1975@hilll.biz" | "Theodora"  | 2262  | "Wunsch"   |
| User        | "furman.grady@ryan.org | "Oswaldo"   | 4977  | "Simonis"  |
| User        | "caesar_hirthe@reynold | "Arjun"     | 3907  | "Prohaska" |
+-------------+------------------------+-------------+-------+------------+


[1 of 1] (j)next (k)prev (q)quit

Printing Custom Tables

Scribe.print/2 takes a list of of columns on the :data options key to customize output. You can use either the atom key or customize the header with {"Custom Title", :key}.

# %User{id: nil, email: nil, first_name: nil, last_name: nil}

User
|> limit(5)
|> Repo.all
|> Scribe.print(data: [{"ID", :id}, :first_name, :last_name])

+------+--------------+-------------+
| "ID" | :first_name  | :last_name  |
+------+--------------+-------------+
| 9061 | "Gene"       | "Krajcik"   |
| 9865 | "Maeve"      | "Gerlach"   |
| 2262 | "Theodora"   | "Wunsch"    |
| 4977 | "Oswaldo"    | "Simonis"   |
| 3907 | "Arjun"      | "Prohaska"  |
+------+--------------+-------------+

Function Columns

You can specify functions that take the given row's struct or map as its only argument.

# %User{id: nil, email: nil, first_name: nil, last_name: nil}
results =
  User
  |> limit(5)
  |> Repo.all
  |> Scribe.print(data: [{"ID", :id}, {"Full Name", fn(x) -> "#{x.last_name}, #{x.first_name}" end}])

+--------------------------+----------------------------------------------+
| "ID"                     | "Full Name"                                  |
+--------------------------+----------------------------------------------+
| 9061                     | "Krajcik, Gene"                              |
| 9865                     | "Gerlach, Maeve"                             |
| 2262                     | "Wunsch, Theodora"                           |
| 4977                     | "Simonis, Oswaldo"                           |
| 3907                     | "Prohaska, Arjun"                            |
+--------------------------+----------------------------------------------+

:ok

Styling Options

Width

Pass a width option to define table width.

iex> Scribe.print(data, width: 80)

+-------------------+-----------------------------------------------------+
| :id               | :key                                                |
+-------------------+-----------------------------------------------------+
| 910               | "B1786AC67B4DEB19"                                  |
| 313               | "30CB8A2DE4750070"                                  |
| 25                | "D0859205FC7E7298"                                  |
| 647               | "8F0060AD0BD6AB04"                                  |
| 253               | "65509A684D619182"                                  |
+-------------------+-----------------------------------------------------+

Disable Colors

iex> Scribe.print(data, colorize: false)

Styles

Scribe supports four styling formats natively, with support for custom adapters.

Default

iex> Scribe.print(data, style: Scribe.Style.Default)

+-------+-----------------------------------+------------------------+
| :id   | :inserted_at                      | :key                   |
+-------+-----------------------------------+------------------------+
| 457   | "2017-03-27 14:42:34.095202Z"     | "CEB0E055ECDF6028"     |
| 326   | "2017-03-27 14:42:34.097519Z"     | "CF67027F7235B88D"     |
| 756   | "2017-03-27 14:42:34.097553Z"     | "DE016DFF477BEDDB"     |
| 484   | "2017-03-27 14:42:34.097572Z"     | "9194A82EF4BB0123"     |
| 780   | "2017-03-27 14:42:34.097591Z"     | "BF92748B4AAAF14A"     |
+-------+-----------------------------------+------------------------+

Psql

iex> Scribe.print(data, style: Scribe.Style.Psql)

 :id   | :inserted_at                      | :key
-------+-----------------------------------+------------------------
 700   | "2017-03-27 14:41:33.411442Z"     | "A2FA80D0F6DF9388"
 890   | "2017-03-27 14:41:33.412955Z"     | "F95094328A91D950"
 684   | "2017-03-27 14:41:33.412991Z"     | "1EAC6B28045ED644"
 531   | "2017-03-27 14:41:33.413015Z"     | "DC2377B696355642"
 648   | "2017-03-27 14:41:33.413037Z"     | "EA9311B4683A52B3"

Github Markdown

iex> Scribe.print(data, style: Scribe.Style.GithubMarkdown)

| :id   | :inserted_at                      | :key                   |
|-------|-----------------------------------|------------------------|
| 457   | "2017-03-27 14:42:34.095202Z"     | "CEB0E055ECDF6028"     |
| 326   | "2017-03-27 14:42:34.097519Z"     | "CF67027F7235B88D"     |
| 756   | "2017-03-27 14:42:34.097553Z"     | "DE016DFF477BEDDB"     |
| 484   | "2017-03-27 14:42:34.097572Z"     | "9194A82EF4BB0123"     |
| 780   | "2017-03-27 14:42:34.097591Z"     | "BF92748B4AAAF14A"     |

Pseudo

iex> Scribe.print(data, style: Scribe.Style.Pseudo)

┌───────┬───────────────────────────────────┬────────────────────────┐
│ :id   │ :inserted_at                      │ :key                   │
├───────┼───────────────────────────────────┼────────────────────────┤
│ 457   │ "2017-03-27 14:42:34.095202Z"     │ "CEB0E055ECDF6028"     │
│ 326   │ "2017-03-27 14:42:34.097519Z"     │ "CF67027F7235B88D"     │
│ 756   │ "2017-03-27 14:42:34.097553Z"     │ "DE016DFF477BEDDB"     │
│ 484   │ "2017-03-27 14:42:34.097572Z"     │ "9194A82EF4BB0123"     │
│ 780   │ "2017-03-27 14:42:34.097591Z"     │ "BF92748B4AAAF14A"     │
└───────┴───────────────────────────────────┴────────────────────────┘

NoBorder

iex> Scribe.print(data, style: Scribe.Style.NoBorder)

 :id    :inserted_at                       :key
 457    "2017-03-27 14:42:34.095202Z"      "CEB0E055ECDF6028"
 326    "2017-03-27 14:42:34.097519Z"      "CF67027F7235B88D"
 756    "2017-03-27 14:42:34.097553Z"      "DE016DFF477BEDDB"
 484    "2017-03-27 14:42:34.097572Z"      "9194A82EF4BB0123"
 780    "2017-03-27 14:42:34.097591Z"      "BF92748B4AAAF14A"

Set a default one in your Mix config if you like:

config :scribe, style: Scribe.Style.Psql