mgm

package module
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 Go to latest Published: Aug 13, 2022 License: Apache-2.0 Imports: 12 Imported by: 0

README

Mongo Go Models

I'm forked the repo for replace createdAt, updatedAt (camelCase is standard on JSON)

see MGM docs

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func CollName 

func CollName(m Model) string

CollName returns a model's collection name. The `CollectionNameGetter` will be used if the model implements this interface. Otherwise, the collection name is inferred based on the model's type using reflection.

func Ctx 

func Ctx() context.Context

Ctx function creates and returns a new context with a default timeout value.

func NewClient 

func NewClient(opts ...*options.ClientOptions) (*mongo.Client, error)

NewClient returns a new mongodb client.

func NewCtx 

func NewCtx(timeout time.Duration) context.Context

NewCtx function creates and returns a new context with the specified timeout.

func ResetDefaultConfig 

func ResetDefaultConfig()

ResetDefaultConfig resets the configuration values, client and database.

func SetDefaultConfig 

func SetDefaultConfig(conf *Config, dbName string, opts ...*options.ClientOptions) (err error)

SetDefaultConfig initializes the client and database using the specified configuration values, or default.

func Transaction 

func Transaction(f TransactionFunc) error

Transaction creates a transaction with the default client.

func TransactionWithClient 

func TransactionWithClient(ctx context.Context, client *mongo.Client, f TransactionFunc) error

TransactionWithClient creates a transaction with the given client.

func TransactionWithCtx 

func TransactionWithCtx(ctx context.Context, f TransactionFunc) error

TransactionWithCtx creates a transaction with the given context and the default client.

func UpsertTrueOption 

func UpsertTrueOption() *options.UpdateOptions

UpsertTrueOption returns new instance of UpdateOptions with the upsert property set to true.

Types

type Collection 

type Collection struct {
	*mongo.Collection
}

Collection performs operations on models and the given Mongodb collection

func Coll 

func Coll(m Model, opts ...*options.CollectionOptions) *Collection

Coll returns the collection associated with a model.

func CollectionByName 

func CollectionByName(name string, opts ...*options.CollectionOptions) *Collection

CollectionByName returns a new collection using the current configuration values.

func NewCollection 

func NewCollection(db *mongo.Database, name string, opts ...*options.CollectionOptions) *Collection

NewCollection returns a new collection with the supplied database.

func (*Collection) Create 

func (coll *Collection) Create(model Model, opts ...*options.InsertOneOptions) error

Create method inserts a new model into the database.

func (*Collection) CreateWithCtx 

func (coll *Collection) CreateWithCtx(ctx context.Context, model Model, opts ...*options.InsertOneOptions) error

CreateWithCtx method inserts a new model into the database.

func (*Collection) Delete 

func (coll *Collection) Delete(model Model) error

Delete method deletes a model (doc) from a collection. To perform additional operations when deleting a model you should use hooks rather than overriding this method.

func (*Collection) DeleteWithCtx 

func (coll *Collection) DeleteWithCtx(ctx context.Context, model Model) error

DeleteWithCtx method deletes a model (doc) from a collection using the specified context. To perform additional operations when deleting a model you should use hooks rather than overriding this method.

func (*Collection) FindByID 

func (coll *Collection) FindByID(id interface{}, model Model) error

FindByID method finds a doc and decodes it to a model, otherwise returns an error. The id field can be any value that if passed to the `PrepareID` method, it returns a valid ID (e.g string, bson.ObjectId).

func (*Collection) FindByIDWithCtx 

func (coll *Collection) FindByIDWithCtx(ctx context.Context, id interface{}, model Model) error

FindByIDWithCtx method finds a doc and decodes it to a model, otherwise returns an error. The id field can be any value that if passed to the `PrepareID` method, it returns a valid ID (e.g string, bson.ObjectId).

func (*Collection) First 

func (coll *Collection) First(filter interface{}, model Model, opts ...*options.FindOneOptions) error

First method searches and returns the first document in the search results.

func (*Collection) FirstWithCtx 

func (coll *Collection) FirstWithCtx(ctx context.Context, filter interface{}, model Model, opts ...*options.FindOneOptions) error

FirstWithCtx method searches and returns the first document in the search results.

func (*Collection) SimpleAggregate 

func (coll *Collection) SimpleAggregate(results interface{}, stages ...interface{}) error

SimpleAggregate is just same as SimpleAggregateWithCtx, but doesn't get context param.

func (*Collection) SimpleAggregateCursor 

func (coll *Collection) SimpleAggregateCursor(stages ...interface{}) (*mongo.Cursor, error)

SimpleAggregateCursor is just same as SimpleAggregateCursorWithCtx, but doesn't get context.

func (*Collection) SimpleAggregateCursorWithCtx 

func (coll *Collection) SimpleAggregateCursorWithCtx(ctx context.Context, stages ...interface{}) (*mongo.Cursor, error)

SimpleAggregateCursorWithCtx performs a simple aggregation and returns a cursor over the resulting documents. Note: you can not use this method in a transaction because it does not accept a context. To participate in transactions, please use the regular aggregation method.

func (*Collection) SimpleAggregateFirst 

func (coll *Collection) SimpleAggregateFirst(result interface{}, stages ...interface{}) (bool, error)

SimpleAggregateFirst is just same as SimpleAggregateFirstWithCtx, but doesn't get context param.

func (*Collection) SimpleAggregateFirstWithCtx 

func (coll *Collection) SimpleAggregateFirstWithCtx(ctx context.Context, result interface{}, stages ...interface{}) (bool, error)

SimpleAggregateFirstWithCtx performs a simple aggregation, decodes the first aggregate result and returns it using the provided result parameter. The value of `stages` can be Operator|bson.M Note: you can not use this method in a transaction because it does not accept a context. To participate in transactions, please use the regular aggregation method.

func (*Collection) SimpleAggregateWithCtx 

func (coll *Collection) SimpleAggregateWithCtx(ctx context.Context, results interface{}, stages ...interface{}) error

SimpleAggregateWithCtx performs a simple aggregation, decodes the aggregate result and returns the list using the provided result parameter. The value of `stages` can be Operator|bson.M Note: you can not use this method in a transaction because it does not accept a context. To participate in transactions, please use the regular aggregation method.

func (*Collection) SimpleFind 

func (coll *Collection) SimpleFind(results interface{}, filter interface{}, opts ...*options.FindOptions) error

SimpleFind finds, decodes and returns the results.

func (*Collection) SimpleFindWithCtx 

func (coll *Collection) SimpleFindWithCtx(ctx context.Context, results interface{}, filter interface{}, opts ...*options.FindOptions) error

SimpleFindWithCtx finds, decodes and returns the results using the specified context.

func (*Collection) Update 

func (coll *Collection) Update(model Model, opts ...*options.UpdateOptions) error

Update function persists the changes made to a model to the database. Calling this method also invokes the model's mgm updating, updated, saving, and saved hooks.

func (*Collection) UpdateWithCtx 

func (coll *Collection) UpdateWithCtx(ctx context.Context, model Model, opts ...*options.UpdateOptions) error

UpdateWithCtx function persists the changes made to a model to the database using the specified context. Calling this method also invokes the model's mgm updating, updated, saving, and saved hooks.

type CollectionGetter 

type CollectionGetter interface {
	// Collection method return collection
	Collection() *Collection
}

CollectionGetter interface contains a method to return a model's custom collection.

type CollectionNameGetter 

type CollectionNameGetter interface {
	// CollectionName method return model collection's name.
	CollectionName() string
}

CollectionNameGetter interface contains a method to return the collection name of a model.

type Config 

type Config struct {
	// Set to 10 second (10*time.Second) for example.
	CtxTimeout time.Duration
}

Config struct contains extra configuration properties for the mgm package.

func DefaultConfigs 

func DefaultConfigs() (*Config, *mongo.Client, *mongo.Database, error)

DefaultConfigs returns the current configuration values, client and database.

type CreatedHook 

type CreatedHook interface {
	Created() error
}

CreatedHook is called after a model has been created Deprecated: Please use CreatedHookWithCtx

type CreatedHookWithCtx 

type CreatedHookWithCtx interface {
	Created(context.Context) error
}

CreatedHookWithCtx is called after a model has been created

type CreatingHook 

type CreatingHook interface {
	Creating() error
}

CreatingHook is called before saving a new model to the database Deprecated: please use CreatingHookWithCtx

type CreatingHookWithCtx 

type CreatingHookWithCtx interface {
	Creating(context.Context) error
}

CreatingHookWithCtx is called before saving a new model to the database

type DateFields 

type DateFields struct {
	CreatedAt time.Time `json:"createdAt" bson:"createdAt"`
	UpdatedAt time.Time `json:"updatedAt" bson:"updatedAt"`
}

DateFields struct contains the `created_at` and `updated_at` fields that autofill when inserting or updating a model.

func (*DateFields) Creating 

func (f *DateFields) Creating() error

Creating hook is used here to set the `created_at` field value when inserting a new model into the database. TODO: get context as param the next version(4).

func (*DateFields) Saving 

func (f *DateFields) Saving() error

Saving hook is used here to set the `updated_at` field value when creating or updating a model. TODO: get context as param the next version(4).

type DefaultModel 

type DefaultModel struct {
	IDField    `bson:",inline"`
	DateFields `bson:",inline"`
}

DefaultModel struct contains a model's default fields.

func (*DefaultModel) Creating 

func (model *DefaultModel) Creating() error

Creating function calls the inner fields' defined hooks TODO: get context as param in the next version (4).

func (*DefaultModel) Saving 

func (model *DefaultModel) Saving() error

Saving function calls the inner fields' defined hooks TODO: get context as param the next version(4).

type DeletedHook 

type DeletedHook interface {
	Deleted(result *mongo.DeleteResult) error
}

DeletedHook is called after a model is deleted Deprecated: Please use DeletedHookWithCtx

type DeletedHookWithCtx 

type DeletedHookWithCtx interface {
	Deleted(ctx context.Context, result *mongo.DeleteResult) error
}

DeletedHookWithCtx is called after a model is deleted

type DeletingHook 

type DeletingHook interface {
	Deleting() error
}

DeletingHook is called before a model is deleted Deprecated: Please use DeletingHookWithCtx

type DeletingHookWithCtx 

type DeletingHookWithCtx interface {
	Deleting(context.Context) error
}

DeletingHookWithCtx is called before a model is deleted

type IDField 

type IDField struct {
	ID primitive.ObjectID `json:"-" bson:"_id,omitempty"`
}

IDField struct contains a model's ID field.

func (*IDField) GetID 

func (f *IDField) GetID() interface{}

GetID method returns a model's ID

func (*IDField) PrepareID 

func (f *IDField) PrepareID(id interface{}) (interface{}, error)

PrepareID method prepares the ID value to be used for filtering e.g convert hex-string ID value to bson.ObjectId

func (*IDField) SetID 

func (f *IDField) SetID(id interface{})

SetID sets the value of a model's ID field.

type Model 

type Model interface {
	// PrepareID converts the id value if needed, then
	// returns it (e.g convert string to objectId).
	PrepareID(id interface{}) (interface{}, error)

	GetID() interface{}
	SetID(id interface{})
}

Model interface contains base methods that must be implemented by each model. If you're using the `DefaultModel` struct in your model, you don't need to implement any of these methods.

type SavedHook 

type SavedHook interface {
	Saved() error
}

SavedHook is called after a model is saved to the database. Deprecated: Please use SavedHookWithCtx

type SavedHookWithCtx 

type SavedHookWithCtx interface {
	Saved(context.Context) error
}

SavedHookWithCtx is called after a model is saved to the database.

type SavingHook 

type SavingHook interface {
	Saving() error
}

SavingHook is called before a model (new or existing) is saved to the database. Deprecated: Please use SavingHookWithCtx

type SavingHookWithCtx 

type SavingHookWithCtx interface {
	Saving(context.Context) error
}

SavingHookWithCtx is called before a model (new or existing) is saved to the database.

type TransactionFunc 

type TransactionFunc func(session mongo.Session, sc mongo.SessionContext) error

TransactionFunc is a handler to manage a transaction.

type UpdatedHook 

type UpdatedHook interface {
	// Deprecated:
	Updated(result *mongo.UpdateResult) error
}

UpdatedHook is called after a model is updated Deprecated: Please use UpdatedHookWithCtx

type UpdatedHookWithCtx 

type UpdatedHookWithCtx interface {
	Updated(ctx context.Context, result *mongo.UpdateResult) error
}

UpdatedHookWithCtx is called after a model is updated

type UpdatingHook 

type UpdatingHook interface {
	Updating() error
}

UpdatingHook is called before updating a model Deprecated: Please use UpdatingHookWithCtx

type UpdatingHookWithCtx 

type UpdatingHookWithCtx interface {
	Updating(context.Context) error
}

UpdatingHookWithCtx is called before updating a model

Source Files

View all Source files

Directories

Path Synopsis
Package builder help us to write aggregates, filters, update maps simpler.
 Package builder help us to write aggregates, filters, update maps simpler.
examples
aggregate
crud
internal
util

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