liooo/dynabute

DYNAmic attriBUTEs for ActiveRecord

Dynabute

Dynamically add attributes on Relational Database backed ActiveRecord, without hash serialization and bullshits.

Try messing with a working demo.

Usage

First, enable dynabute

class User < ActiveRecord::Base
  has_dynabutes
end

then add some field definitions

User.dynabutes.create( name: 'age', value_type: 'integer' )
User.dynabutes.create( name: 'skinny', value_type: 'boolean' )
User.dynabutes.create( name: 'personalities', value_type: 'string', has_many: true )

now set value

user = User.create

user.build_dynabute_value( name: 'age', value: 35 ).save
# => <Dynabute::Values::IntegerValue:0x007faba5279540 id: 1, field_id: 1, dynabutable_id: 1, dynabutable_type: "User", value: 35>

check the value

user.dynabute_value( name: 'age' ).value
# => 35

values can also be referenced by dynabute_<field name>_value(s)

user.dynabute_age_value.value
# => 35

nested attributes of glory

personality_field_id = User.dynabutes.find_by( name: 'personalities' ).id
user.update(
  dynabute_values_attributes: [
    { name: 'age', value: 36 }, #=> tell us which field to update by `name:`
    { name: 'skinny', value: false },
    { field_id: personality_field_id, value: 'introverted' }, # or by `field_id:`
    { field_id: personality_field_id, value: 'stingy' }
  ]
)

select value_type is also available

User.dynabutes.create( name: 'gender', value_type: 'select', options_attributes: [ { label: 'male' }, { label: 'female' } ] )
User.dynabutes.create( name: 'hobbies', has_many: true, value_type: 'select',  options_attributes: [ { label: 'running' }, { label: 'swimming' }, { label: 'hiking' } ] )

list the available options for a field

User.dynabutes.find_by(name: gender).options
# => [#<Dynabute::Option:0x007ff53e2e1f90 id: 1, field_id: 4, label: "male">,
#     #<Dynabute::Option:0x007ff53e2e1568 id: 2, field_id: 4, label: "female">]

set value

male = User.dynabutes.find_by(name: 'gender').options.find_by(label: 'male')
hobbies = User.dynabutes.find_by(name: 'hobbies').options

user.update(dynabute_values_attributes: [
 { name: 'gender', value: male.id },
 { name: 'hobbies', value: hobbies[0].id },
 { name: 'hobbies', value: hobbies[1].id }
])

check out the selected options

user.dynabute_value(name: 'gender').option
# => <Dynabute::Option:0x007ff53e2e1f90 id: 1, field_id: 4, label: "male">,

user.dynabute_value(name: 'hobbies').map(&:option)
# => [#<Dynabute::Option:0x007fb26c4467d8 id: 5, field_id: 5, label: "running">,
#     #<Dynabute::Option:0x007fb26c446238 id: 6, field_id: 5, label: "swimming">]

Installation

Add this line to your application's Gemfile:

gem 'dynabute'

And then execute:

$ bundle install
$ rails generate dynabute:install
$ rake db:migrate

Contributing

yea?

License

The gem is available as open source under the terms of the MIT License.

dynabute's Issues

Delete all dynabutes when deleting model

Hi,
is there an option for dependent: :delete_all when destroying a model with dynabutes?

Integrate with active admin

Hey, I found this gem a great and pleasant piece of work that is precise as I want.
My rails application is built on active admin and I want to add dynamic attributes for some models in my active admin.

But I found no any way to integrate this gem with active admin as I'm a newbie on rails. Do you have any idea about this?

NoMethodError: undefined method `binds' for #<ActiveRecord::Relation::

Request.dynabutes << Dynabute::Field.new( name: 'gender', value_type: 'select', options_attributes: [ { label: 'male' }, { label: 'female' } ] )
when i push the Dynabute:field... to Request.dynabutes obj, it returns a Nomethod error.