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DynFork

ORM-like API MongoDB for Crystal language.

Build Status Docs Crysta GitHub release GitHub license GitHub repository

DynFork is built around Cryomongo and is more focused on web development.
For simulate relationship Many-to-One and Many-to-Many,
a simplified alternative (Types of selective fields with dynamic addition of elements) is used.
The project is focused on web development.


Status Project

Compatible with MongoDB 3.6 . Tested against: 4.4, 7.0
For more information see Cryomongo.

Documentation

Online browsable documentation is available at https://kebasyaty.github.io/dynfork/.

Requirements

View the list of requirements.

Installation

  1. Install MongoDB (if not installed):
    Fedora Debian Ubuntu Linux Mint

  2. Install additional libraries (if not installed):
    Fedora Debian Ubuntu Linux Mint

  3. Add the dependency to your shard.yml:

    dependencies:
      dynfork:
        github: kebasyaty/dynfork
        version: ~> 0.7.37
  4. Run shards install

Usage

It is recommended to look at examples here.

require "dynfork"

# Create your model.
@[DynFork::Meta(service_name: "Accounts")]
struct User < DynFork::Model
  getter username = DynFork::Fields::TextField.new
  getter email = DynFork::Fields::EmailField.new
  getter birthday = DynFork::Fields::DateField.new
end

# Initialize locale.
# https://github.com/crystal-i18n/i18n
I18n.config.loaders << I18n::Loader::YAML.new("config/locales")
I18n.config.default_locale = :en
I18n.init

# Run migration.
# https://elbywan.github.io/cryomongo/Mongo/Client.html
DynFork::Migration::Monitor.new(
  app_name: "AppName",
  unique_app_key: "Towr5kKQM5H3Lb0b",
  mongo_client: Mongo::Client.new("mongodb://localhost:27017")
).migrat

# Create a user.
user = User.new

# Add user data.
user.username.value = "username"
user.email.value = "[email protected]"
user.birthday.value = "1970-01-01"

# Save user.
# Hint: print_err - convenient for development.
user.print_err unless user.save

# Print user details.
puts "User details:"
if id = user.object_id
  pp User.find_one_to_hash({_id: id})
end

puts "Documwnt count: #{User.estimated_document_count}"

puts "Delete user."
user.delete

puts "Documwnt count: #{User.count_documents}"

Model Parameters

See the documentation here.

( only service_name is a required parameter )
Parameter Default Description
service_name no Examples: Accounts | Smartphones | Washing machines | etc ...
fixture_name no The name of the fixture in the config/fixtures directory (without extension).
Examples: SiteSettings | AppSettings | etc ...
db_query_docs_limit 1000 limiting query results.
migrat_model? true Set to false if you do not need to migrate the Model to the database.
This can be use to validate a web forms - Search form, Contact form, etc.
create_doc? true Can a Model create new documents in a collection?
Set to false if you only need one document in the collection and the Model is using a fixture.
update_doc? true Can a Model update documents in a collection?
delete_doc? true Can a Model remove documents from a collection?

Example:

  @[DynFork::Meta(
    service_name: "ServiceName",
    fixture_name: "FixtureName",
    db_query_docs_limit: 1000,
    migrat_model?: true,
    create_doc?: true,
    update_doc?: true,
    delete_doc?: true,
  )]
  struct User < DynFork::Model
    getter username = DynFork::Fields::TextField.new
    getter birthday = DynFork::Fields::DateField.new
  end

Methods for developers

Links to documentation.

Model:

  • full_model_name
  • meta
  • subclasses
  • object_id

Extra:

  • add_validation
  • indexing
  • pre_create
  • post_create
  • pre_update
  • post_update
  • pre_delete
  • post_delete

Migration:

  • migrat

QPaladins:

  • valid?
  • save
  • print_err
  • delete
  • verify_password
  • update_password

QCommons:

  • aggregate
  • collection_name
  • count_documents
  • distinct
  • estimated_document_count
  • stats
  • find_many_to_hash_list
  • find_many_to_json
  • find_one_to_hash
  • find_one_to_instance
  • find_one_to_json
  • find_one_and_delete
  • unit_manager
  • delete_many
  • delete_one
  • bulk
  • bulk_write
  • create_index
  • create_indexes
  • drop_index
  • drop_indexes
  • list_indexes

F64Field:

  • finance_plus
  • finance_minus
  • finance_divide
  • finance_multiply

For currencies, use the Money shard.

Contributing

  1. Fork it (https://github.com/kebasyaty/dynfork/fork)
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

Contributors

  • kebasyaty Gennady Kostyunin - creator and maintainer

Changelog

View the change history.

License

This project is licensed under the MIT.



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ORM-like API MongoDB for Crystal language.

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