应用程序配置

rails g mongoid:config

config.generators do |g|
  g.orm :mongoid
end

# Uses automatically detected environment name
Mongoid.load!("config/mongoid.yml")
# Specifies environment name manually
Mongoid.load!("config/mongoid.yml", :development)

development:
  # Configures available database clients. (required)
  clients:
    # Defines the default client. (required)
    default:
      # Supplies your connection URI, including the database name.
      uri: mongodb+srv://user:pass@mongo0.example.com/myDB
      # OR, you can define the parameters separately.
      # Defines the name of the default database. (required)
      database: my_db_development
      # Provides the hosts the client can connect to.
      # Must be an array of host:port pairs. (required)
      hosts:
        - localhost:27017
      options:
        # All options in this section are Ruby driver client options.
        # To learn more, visit
        # https://www.mongodb.com/zh-cn/docs/ruby-driver/current/reference/create-client/
        # Sets the write concern. (default = { w: 1 })
        write:
          w: 1
        # Sets the read preference. Valid options for mode are: :secondary,
        # :secondary_preferred, :primary, :primary_preferred, :nearest
        # (default: primary)
        read:
          mode: :secondary_preferred
          tag_sets: # If using tag sets
            - use: web
        # Sets name of the user for authentication.
        user: "user"
        # Sets password of the user for authentication.
        password: "password"
        # Sets user's database roles.
        roles:
          - "dbOwner"
        # Sets the authentication mechanism. Valid options include:
        # :scram, :scram256, :mongodb_cr, :mongodb_x509, :gssapi, :aws, :plain
        # MongoDB Server defaults to :scram
        auth_mech: :scram
        # Sets the database or source to authenticate the user against.
        # (default: the database specified above or admin)
        auth_source: admin
        # Specifies type of connection. Can be one of: :direct,
        # :replica_set, :sharded
        # Set to :direct when connecting to hidden members of a replica set.
        connect: :direct
        # Changes the time taken for the server monitors to refresh
        # their status via hello commands. (default: 10)
        heartbeat_frequency: 10
        # Sets time in seconds for selecting servers for a :nearest read
        # preference. (default: 0.015)
        local_threshold: 0.015
        # Sets timeout in seconds for selecting a server for an
        # operation. (default: 30)
        server_selection_timeout: 30
        # Sets maximum number of connections in the connection pool.
        # (default: 5)
        max_pool_size: 5
        # Sets minimum number of connections in the connection pool.
        # (default: 1)
        min_pool_size: 1
        # Sets time to wait, in seconds, in the connection pool for a
        # connection to be checked in before timing out. (default: 5)
        wait_queue_timeout: 5
        # Sets time to wait to establish a connection before timing out,
        # in seconds. (default: 10)
        connect_timeout: 10
        # Sets name of the replica set to connect to. Servers provided as
        # seeds that do not belong to this replica set are ignored.
        replica_set: myRS
        # Sets compressors to use for wire protocol compression.
        # (default is to not use compression)
        compressors: ["zstd", "snappy", "zlib"]
        # Specified whether to connect to the servers by using ssl.
        # (default: false)
        ssl: true
        # Sets certificate file used to identify the connection for SSL.
        ssl_cert: /path/to/my.cert
        # Sets private keyfile used to identify the connection against MongoDB.
        # Even if the key is stored in the same file as the certificate,
        # both need to be explicitly specified.
        ssl_key: /path/to/my.key
        # Sets passphrase for the private key.
        ssl_key_pass_phrase: password123
        # Specifies whether to do peer certification validation.
        # (default: true)
        ssl_verify: true
        # Sets file containing concatenated certificate authority
        # certificates used to validate certs passed from the other end
        # of the connection.
        ssl_ca_cert: /path/to/ca.cert
        # Specifies whether to truncate long log lines. (default: true)
        truncate_logs: true
  # Optional Mongoid-specific configuration.
  options:
    # Allows BSON::Decimal128 to be parsed and returned directly in
    # field values. Only has effect when BSON 5+ is present.
    allow_bson5_decimal128: false
    # Sets app name that is printed to the MongoDB logs upon establishing
    # a connection. Value is used as the database name if the database
    # name is not provided. (default: nil)
    app_name: nil
    # When false, callbacks for embedded documents will not be
    # called. This is the default in 9.0.
    # Setting this flag to true restores the pre-9.0 behavior, where callbacks
    # for embedded documents are called, which might lead to stack overflow errors.
    around_callbacks_for_embeds: false
    # Sets the async_query_executor for the application. By default the
    # thread pool executor is set to :immediate. Options are:
    #   - :immediate - Initializes a single +Concurrent::ImmediateExecutor+
    #   - :global_thread_pool - Initializes a single +Concurrent::ThreadPoolExecutor+
    #      that uses the +async_query_concurrency+ for the +max_threads+ value.
    async_query_executor: :immediate
    # Marks belongs_to associations as required by default, so saving a
    # model with a missing association triggers a validation error.
    belongs_to_required_by_default: true
    # Sets the global discriminator key.
    discriminator_key: "_type"
    # Raises an exception when a field is redefined.
    duplicate_fields_exception: false
    # Defines how many asynchronous queries can be executed concurrently.
    # This option should be set only if `async_query_executor` is set
    # to `:global_thread_pool`.
    global_executor_concurrency: nil
    # When this flag is true, any attempt to change the _id of a persisted
    # document will raise an exception (Errors::ImmutableAttribute).
    # This is the default in 9.0. Setting this flag to false restores the
    # pre-9.0 behavior, where changing the _id of a persisted
    # document might be ignored.
    immutable_ids: true
    # Includes the root model name in json serialization.
    include_root_in_json: false
    # # Include the _type field in serialization.
    include_type_for_serialization: false
    # Specifies whether to join nested persistence contexts for atomic
    # operations to parent contexts.
    join_contexts: false
    # When this flag is false (the default for 9.0), a document that
    # is created or loaded remembers the storage options that were active
    # when it was loaded, and will use those same options by default when
    # saving or reloading itself.
    #
    # When this flag is true, a document does not remember the storage
    # options from when it was loaded/created, and
    # subsequent updates will need to explicitly set up those options
    # each time.
    legacy_persistence_context_behavior: false
    # Specifies whether to use legacy read-only behavior. To learn more,
    # visit https://www.mongodb.com/zh-cn/docs/mongoid/current/interact-data/crud
    legacy_readonly: false
    # Sets the log level. This must be set before referencing clients
    # or Mongo.logger, because changes to this option are not be
    # propagated to any clients and loggers that already exist.
    log_level: :info
    # Stores BigDecimals as Decimal128s instead of strings in the db.
    map_big_decimal_to_decimal128: true
    # Preloads all models in development, needed when models use
    # inheritance.
    preload_models: false
    # When this flag is true, callbacks for every embedded document will be
    # called only once, even if the embedded document is embedded in multiple
    # documents in the root document's dependencies graph.
    # This is the default in 9.0. Setting this flag to false restores the
    # pre-9.0 behavior, where callbacks are called for every occurrence of an
    # embedded document.
    prevent_multiple_calls_of_embedded_callbacks: true
    # Raises an error when performing a find operation and no document
    # matches.
    raise_not_found_error: true
    # Raises an error when defining a scope with the same name as an
    # existing method.
    scope_overwrite_exception: false
    # Returns stored times as UTC.
    use_utc: false
  # Optional driver-specific configuration.
  driver_options:
    # When this flag is off, an aggregation done on a view is performed on
    # the documents included in that view, instead of all documents in the
    # collection. When this flag is on, the view filter is ignored.
    broken_view_aggregate: true
    # When this flag is set to false, the view options is correctly
    # propagated to readable methods.
    broken_view_options: true
    # When this flag is set to true, the update and replace methods
    # validate the parameters and raise an error if they are invalid.
    validate_update_replace: false

Mongoid.configure do |config|
  config.load_defaults <older version>
end

development:
  clients:
    default:
      uri: "<%= ENV['MONGODB_URI'] %>"

Time.use_zone("Asia/Kolkata") do
  # String does not include time zone, so "Asia/Kolkata" is used
  ghandi.born_at = "1869-10-02 7:10 PM"
  # Time zone in string (-0600) is used
  amelia.born_at = "1897-07-24 11:30 -0600"
end

Mongo.tls_context_hooks.push(
  Proc.new { |context|
    context.ciphers = ["AES256-SHA"]
  }
)

development:
  clients:
    default:
      ...
      options:
        # Specify compresses to use. (default is no compression)
        # Accepted values are zstd, zlib, snappy, or a combination
        compressors: ["zstd", "snappy"]