ActiveExport

ActiveExport generate CSV/XML/YAML String or CSV/XML/YAML file.

You can write the logic of generating csv or xml, yaml to a YAML file.

Another Support:

• csv label adapt i18n.
• when the value of csv data is null or blank or true or false, change another label
  ex) nil to '', blank to 'empty', true to 'Yes', false to 'No'
  

Installation

Add this line to your application's Gemfile:

gem 'active_export'

And then execute:

$ bundle

Or install it yourself as:

$ gem install active_export

Generate the config initializer file and default.yml

$ rails g active_export:install

Example

ActiveExport::Csv.export(Book.scoped, source_name, namespace)
# => csv string
# "Title","AuthorName","Price(in tax)","Published"
# "Ruby","Bob","28","2012-08-01"
# "Rails","Alice","18","2012-07-01"

Price(in tax) 28 is (book.price * 1.095).ceil.to_i result.

YAML file:

namespace:
  label_prefix: 'book'
  methods:
    - name
    - author.name
    - price: '(price * 1.095).ceil.to_i'
    - created_at.strftime('%Y-%m-%d')

Write the same way without the ActiveExport:

CSV.generate do |csv|
  csv << ['Title', 'Author', 'Price(in Tax)', 'Published Date']
    Book.all.each do |book|
      csv_data = []
      csv_data << book.name.blank? ? '' : book.name
      csv_data << book.author ? book.author.name : ''
      csv_data << (book.price * 1.095).ceil.to_i
      csv_data << book.created_at.blank? ? '' : book.created_at.strftime('%Y-%m-%d')
      csv << csv_data
    end
  end
end

Usage

# Exporting Csv String
ActiveExport::Csv.export(Book.scoped, source_name, namespace)

# Exporting Csv File
ActiveExport::Csv.export_file(Book.scoped, source_name, namespace, filename)

# Exporting Xml String
ActiveExport::Xml.export(Book.scoped, source_name, namespace)

# Exporting Xml File
ActiveExport::Xml.export_file(Book.scoped, source_name, namespace, filename)

# Exporting Yaml String
ActiveExport::Yaml.export(Book.scoped, source_name, namespace)

# Exporting Yaml File
ActiveExport::Yaml.export_file(Book.scoped, source_name, namespace, filename)

ActiveExport::Csv

Support 2 methods:

• export(data, source_name, namespace, options = {}) ... Generate Csv string
• export_file(data, source_name, namespace, filename, options = {}) ... Generate Csv file

options:

• :eval_methods ... override export method from YAML file.
• :label_keys ... override csv header label from YAML file.
• :label_prefix ... override csv header label prefix from YAML file.
• :csv_options ... Csv generate options.
• :header ... false to not export Csv header labels.

features:

• Support encoding

ActiveExport::Xml

Support 2 methods:

• ActiveExport::Xml.export(Book.scoped, source_name, namespace) ... Generate Xml string
• ActiveExport::Xml.export_file(Book.scoped, source_name, namespace, filename) ... Generate Xml file

options:

• TODO

features:

• Support encoding

ActiveExport::Yaml

Support 2 methods:

• ActiveExport::Yaml.export(Book.scoped, source_name, namespace) ... Generate Yaml string
• ActiveExport::Yaml.export_file(Book.scoped, source_name, namespace, filename) ... Generate Yaml file

options:

• TODO

features:

• exporting i18n labels

YAML file format

namespace:
  label_prefix: label_prefix
  methods:
    - method_name
    - label_name: method_name
  # If using Xml export
  xml_format:
    encoding: 'UTF-8'
    header: |
      <?xml version="1.0" encoding="UTF-8"?>
      <records>
    footer: |
      </records>
    body: |
      <record>
        <name>%%label_name%%</name>
      </record>

namespace_2:
  label_prefix: ...
  ...
````

xml_format:

TODO

I18n field priority

1. active_export.#{source_name}.#{namespace}.(label_prefix_)#{key}
2. activerecord.attributes.(label_prefix.)#{key}
3. activemodel.attributes.(label_prefix.)#{key}
4. #{key.to_s.gsub(".", "_").humanize}

ex)

key ... author.name
label_prefix ... book
source_name ... default
namespace ... book_1

1. `active_export.default.book_1.author_name`
2. `activerecord.attributes.author.name`
3. `activemode.attributes.author.name`
4. `author_name".humanize # => Author name`

ex2)

key ... "name"
label_prefix ... "book"
source_name ... "default"
namespace ... "book_1"

1. `active_export.default.book_1.book_name`
2. `activerecord.attributes.book.name`
3. `activemode.attributes.book.name`
4. `book_name`.humanize # => Book name

methods examples

book:
  - "author.name" # call [instance].author.name
  - "price > 0" # call [instance].price > 0 # => true or false
  - "price.to_f / 2.0" # call [instance].price.to_f / 2.0
  - "sprintf("%#b", price)" # call sprintf("%#b", [instance].price)

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request