Firestore Builder

Installation

Setup Firestore for your project

Follow the official Firebase documentation to add Firestore to your project.

This will make you add the following dependencies :

flutter pub add firebase_core
flutter pub add cloud_firestore

Dependencies

Add the firestore_builder package in dev_dependencies. You can do this by running this command:

flutter pub add dev:firestore_builder

Configuration

Generation is based on a YAML configuration file (firestore_builder_config.yaml) that describes the structure of the database you want.

A. Use the devtools extension

The simplest way to configure the generation is to use the devtools extension app :

• Launch your app in debug mode
• Open the devtool

• Select the firestore_builder tab and enable the extension

• Use the extension app to build the configuration file

• You can save the configuration file directly from the extensions app, this will create the firestore_builder_config.yaml at the root of your project

B. Or manually create the configuration file

If you master the configuration syntax, you can manually create the firestore_builder_config.yaml file at the root of your project. Here is a simple configuration file with only one collection (users)

firestore_builder:
  output: lib/firestore
  use_riverpod: true
  collections:
    - collection:
        collection_name: users
        model_name: user
        fields:
          - name: String
          - age: int

Add external dependencies

The generated code is based on external packages. Thanks @remi_rousselet for this.

• The Freezed package to make models classes immutable and equatable.

• (optionally) The Riverpod package. My personal favorite state management package

You need to add these dependencies :

Freezed

flutter pub add freezed_annotation
flutter pub add dev:build_runner
flutter pub add dev:freezed
flutter pub add json_annotation
flutter pub add dev:json_serializable

Riverpod (Optional)

flutter pub add flutter_riverpod

Generate the Freezed classes

Do not forget to run the build_runner command line each time you generate new code :

dart run build_runner build --delete-conflicting-outputs

Generation result

With a simple configuration file, here is the result of the generation:

lib
-- firestore
	-- models
		-- updated_value.dart
		-- user.dart
		-- user.freezed.dart
		-- user.g.dart
	-- services
		-- firestore_query_service.dart
		-- firestore_reference_service.dart
		-- firestore_stream_service.dart
	-- states
		-- user_states.dart

• updated_value.dart is a helper class that allows to update some properties of a document
• user.dart is the model class of the user collection.
• firestore_query_service.dart is the service to make API call (get, add, delete, update, …)
• firestore_reference_service.dart is the service to easily access to the Firestore references (documents or collections)
• firestore_stream_service.dart is the service to consume Firestore data through streams
• user_states.dart is where the Riverpod providers are defined