gorm

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Version: v1.23.8 Latest Latest
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Published: Jul 7, 2022 License: MIT Imports: 17 Imported by: 9,787

README

GORM

The fantastic ORM library for Golang, aims to be developer friendly.

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Overview

  • Full-Featured ORM
  • Associations (Has One, Has Many, Belongs To, Many To Many, Polymorphism, Single-table inheritance)
  • Hooks (Before/After Create/Save/Update/Delete/Find)
  • Eager loading with Preload, Joins
  • Transactions, Nested Transactions, Save Point, RollbackTo to Saved Point
  • Context, Prepared Statement Mode, DryRun Mode
  • Batch Insert, FindInBatches, Find To Map
  • SQL Builder, Upsert, Locking, Optimizer/Index/Comment Hints, NamedArg, Search/Update/Create with SQL Expr
  • Composite Primary Key
  • Auto Migrations
  • Logger
  • Extendable, flexible plugin API: Database Resolver (Multiple Databases, Read/Write Splitting) / Prometheus…
  • Every feature comes with tests
  • Developer Friendly

Getting Started

Contributing

You can help to deliver a better GORM, check out things you can do

License

© Jinzhu, 2013~time.Now

Released under the MIT License

Documentation

Index

Constants

This section is empty.

Variables

View Source
var (
	// ErrRecordNotFound record not found error
	ErrRecordNotFound = logger.ErrRecordNotFound
	// ErrInvalidTransaction invalid transaction when you are trying to `Commit` or `Rollback`
	ErrInvalidTransaction = errors.New("invalid transaction")
	// ErrNotImplemented not implemented
	ErrNotImplemented = errors.New("not implemented")
	// ErrMissingWhereClause missing where clause
	ErrMissingWhereClause = errors.New("WHERE conditions required")
	// ErrUnsupportedRelation unsupported relations
	ErrUnsupportedRelation = errors.New("unsupported relations")
	// ErrPrimaryKeyRequired primary keys required
	ErrPrimaryKeyRequired = errors.New("primary key required")
	// ErrModelValueRequired model value required
	ErrModelValueRequired = errors.New("model value required")
	// ErrInvalidData unsupported data
	ErrInvalidData = errors.New("unsupported data")
	// ErrUnsupportedDriver unsupported driver
	ErrUnsupportedDriver = errors.New("unsupported driver")
	// ErrRegistered registered
	ErrRegistered = errors.New("registered")
	// ErrInvalidField invalid field
	ErrInvalidField = errors.New("invalid field")
	// ErrEmptySlice empty slice found
	ErrEmptySlice = errors.New("empty slice found")
	// ErrDryRunModeUnsupported dry run mode unsupported
	ErrDryRunModeUnsupported = errors.New("dry run mode unsupported")
	// ErrInvalidDB invalid db
	ErrInvalidDB = errors.New("invalid db")
	// ErrInvalidValue invalid value
	ErrInvalidValue = errors.New("invalid value, should be pointer to struct or slice")
	// ErrInvalidValueOfLength invalid values do not match length
	ErrInvalidValueOfLength = errors.New("invalid association values, length doesn't match")
	// ErrPreloadNotAllowed preload is not allowed when count is used
	ErrPreloadNotAllowed = errors.New("preload is not allowed when count is used")
)

Functions

func Expr

func Expr(expr string, args ...interface{}) clause.Expr

Expr returns clause.Expr, which can be used to pass SQL expression as params

func Scan

func Scan(rows Rows, db *DB, mode ScanMode)

Scan scan rows into db statement

Types

type Association

type Association struct {
	DB           *DB
	Relationship *schema.Relationship
	Error        error
}

Association Mode contains some helper methods to handle relationship things easily.

func (*Association) Append

func (association *Association) Append(values ...interface{}) error

func (*Association) Clear

func (association *Association) Clear() error

func (*Association) Count

func (association *Association) Count() (count int64)

func (*Association) Delete

func (association *Association) Delete(values ...interface{}) error

func (*Association) Find

func (association *Association) Find(out interface{}, conds ...interface{}) error

func (*Association) Replace

func (association *Association) Replace(values ...interface{}) error

type ColumnType added in v1.20.5

type ColumnType interface {
	Name() string
	DatabaseTypeName() string                 // varchar
	ColumnType() (columnType string, ok bool) // varchar(64)
	PrimaryKey() (isPrimaryKey bool, ok bool)
	AutoIncrement() (isAutoIncrement bool, ok bool)
	Length() (length int64, ok bool)
	DecimalSize() (precision int64, scale int64, ok bool)
	Nullable() (nullable bool, ok bool)
	Unique() (unique bool, ok bool)
	ScanType() reflect.Type
	Comment() (value string, ok bool)
	DefaultValue() (value string, ok bool)
}

ColumnType column type interface

type Config

type Config struct {
	// GORM perform single create, update, delete operations in transactions by default to ensure database data integrity
	// You can disable it by setting `SkipDefaultTransaction` to true
	SkipDefaultTransaction bool
	// NamingStrategy tables, columns naming strategy
	NamingStrategy schema.Namer
	// FullSaveAssociations full save associations
	FullSaveAssociations bool
	// Logger
	Logger logger.Interface
	// NowFunc the function to be used when creating a new timestamp
	NowFunc func() time.Time
	// DryRun generate sql without execute
	DryRun bool
	// PrepareStmt executes the given query in cached statement
	PrepareStmt bool
	// DisableAutomaticPing
	DisableAutomaticPing bool
	// DisableForeignKeyConstraintWhenMigrating
	DisableForeignKeyConstraintWhenMigrating bool
	// DisableNestedTransaction disable nested transaction
	DisableNestedTransaction bool
	// AllowGlobalUpdate allow global update
	AllowGlobalUpdate bool
	// QueryFields executes the SQL query with all fields of the table
	QueryFields bool
	// CreateBatchSize default create batch size
	CreateBatchSize int

	// ClauseBuilders clause builder
	ClauseBuilders map[string]clause.ClauseBuilder
	// ConnPool db conn pool
	ConnPool ConnPool
	// Dialector database dialector
	Dialector
	// Plugins registered plugins
	Plugins map[string]Plugin
	// contains filtered or unexported fields
}

Config GORM config

func (*Config) AfterInitialize added in v1.21.0

func (c *Config) AfterInitialize(db *DB) error

AfterInitialize initialize plugins after db connected

func (*Config) Apply added in v1.21.0

func (c *Config) Apply(config *Config) error

Apply update config to new config

type ConnPool

type ConnPool interface {
	PrepareContext(ctx context.Context, query string) (*sql.Stmt, error)
	ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error)
	QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error)
	QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row
}

ConnPool db conns pool interface

type ConnPoolBeginner added in v0.2.3

type ConnPoolBeginner interface {
	BeginTx(ctx context.Context, opts *sql.TxOptions) (ConnPool, error)
}

ConnPoolBeginner conn pool beginner

type DB

type DB struct {
	*Config
	Error        error
	RowsAffected int64
	Statement    *Statement
	// contains filtered or unexported fields
}

DB GORM DB definition

func Open

func Open(dialector Dialector, opts ...Option) (db *DB, err error)

Open initialize db session based on dialector

func (*DB) AddError

func (db *DB) AddError(err error) error

AddError add error to db

func (*DB) Assign

func (db *DB) Assign(attrs ...interface{}) (tx *DB)

func (*DB) Association

func (db *DB) Association(column string) *Association

func (*DB) Attrs

func (db *DB) Attrs(attrs ...interface{}) (tx *DB)

func (*DB) AutoMigrate

func (db *DB) AutoMigrate(dst ...interface{}) error

AutoMigrate run auto migration for given models

func (*DB) Begin

func (db *DB) Begin(opts ...*sql.TxOptions) *DB

Begin begins a transaction

func (*DB) Callback

func (db *DB) Callback() *callbacks

Callback returns callback manager

func (*DB) Clauses

func (db *DB) Clauses(conds ...clause.Expression) (tx *DB)

Clauses Add clauses

func (*DB) Commit

func (db *DB) Commit() *DB

Commit commit a transaction

func (*DB) Connection added in v1.22.5

func (db *DB) Connection(fc func(tx *DB) error) (err error)

Connection use a db conn to execute Multiple commands,this conn will put conn pool after it is executed.

func (*DB) Count

func (db *DB) Count(count *int64) (tx *DB)

func (*DB) Create

func (db *DB) Create(value interface{}) (tx *DB)

Create insert the value into database

func (*DB) CreateInBatches added in v1.20.7

func (db *DB) CreateInBatches(value interface{}, batchSize int) (tx *DB)

CreateInBatches insert the value in batches into database

func (*DB) DB added in v0.2.7

func (db *DB) DB() (*sql.DB, error)

DB returns `*sql.DB`

func (*DB) Debug

func (db *DB) Debug() (tx *DB)

Debug start debug mode

func (*DB) Delete

func (db *DB) Delete(value interface{}, conds ...interface{}) (tx *DB)

Delete delete value match given conditions, if the value has primary key, then will including the primary key as condition

func (*DB) Distinct added in v0.2.3

func (db *DB) Distinct(args ...interface{}) (tx *DB)

Distinct specify distinct fields that you want querying

func (*DB) Exec

func (db *DB) Exec(sql string, values ...interface{}) (tx *DB)

Exec execute raw sql

func (*DB) Find

func (db *DB) Find(dest interface{}, conds ...interface{}) (tx *DB)

Find find records that match given conditions

func (*DB) FindInBatches added in v0.2.6

func (db *DB) FindInBatches(dest interface{}, batchSize int, fc func(tx *DB, batch int) error) *DB

FindInBatches find records in batches

func (*DB) First

func (db *DB) First(dest interface{}, conds ...interface{}) (tx *DB)

First find first record that match given conditions, order by primary key

func (*DB) FirstOrCreate

func (db *DB) FirstOrCreate(dest interface{}, conds ...interface{}) (tx *DB)

FirstOrCreate gets the first matched record or create a new one with given conditions (only works with struct, map conditions)

func (*DB) FirstOrInit

func (db *DB) FirstOrInit(dest interface{}, conds ...interface{}) (tx *DB)

FirstOrInit gets the first matched record or initialize a new instance with given conditions (only works with struct or map conditions)

func (*DB) Get

func (db *DB) Get(key string) (interface{}, bool)

Get get value with key from current db instance's context

func (*DB) Group

func (db *DB) Group(name string) (tx *DB)

Group specify the group method on the find

func (*DB) Having

func (db *DB) Having(query interface{}, args ...interface{}) (tx *DB)

Having specify HAVING conditions for GROUP BY

func (*DB) InstanceGet

func (db *DB) InstanceGet(key string) (interface{}, bool)

InstanceGet get value with key from current db instance's context

func (*DB) InstanceSet

func (db *DB) InstanceSet(key string, value interface{}) *DB

InstanceSet store value with key into current db instance's context

func (*DB) Joins

func (db *DB) Joins(query string, args ...interface{}) (tx *DB)

Joins specify Joins conditions

db.Joins("Account").Find(&user)
db.Joins("JOIN emails ON emails.user_id = users.id AND emails.email = ?", "jinzhu@example.org").Find(&user)
db.Joins("Account", DB.Select("id").Where("user_id = users.id AND name = ?", "someName").Model(&Account{}))

func (*DB) Last

func (db *DB) Last(dest interface{}, conds ...interface{}) (tx *DB)

Last find last record that match given conditions, order by primary key

func (*DB) Limit

func (db *DB) Limit(limit int) (tx *DB)

Limit specify the number of records to be retrieved

func (*DB) Migrator

func (db *DB) Migrator() Migrator

Migrator returns migrator

func (*DB) Model

func (db *DB) Model(value interface{}) (tx *DB)

Model specify the model you would like to run db operations

// update all users's name to `hello`
db.Model(&User{}).Update("name", "hello")
// if user's primary key is non-blank, will use it as condition, then will only update the user's name to `hello`
db.Model(&user).Update("name", "hello")

func (*DB) Not

func (db *DB) Not(query interface{}, args ...interface{}) (tx *DB)

Not add NOT conditions

func (*DB) Offset

func (db *DB) Offset(offset int) (tx *DB)

Offset specify the number of records to skip before starting to return the records

func (*DB) Omit

func (db *DB) Omit(columns ...string) (tx *DB)

Omit specify fields that you want to ignore when creating, updating and querying

func (*DB) Or

func (db *DB) Or(query interface{}, args ...interface{}) (tx *DB)

Or add OR conditions

func (*DB) Order

func (db *DB) Order(value interface{}) (tx *DB)

Order specify order when retrieve records from database

db.Order("name DESC")
db.Order(clause.OrderByColumn{Column: clause.Column{Name: "name"}, Desc: true})

func (*DB) Pluck

func (db *DB) Pluck(column string, dest interface{}) (tx *DB)

Pluck used to query single column from a model as a map

var ages []int64
db.Model(&users).Pluck("age", &ages)

func (*DB) Preload

func (db *DB) Preload(query string, args ...interface{}) (tx *DB)

Preload preload associations with given conditions

db.Preload("Orders", "state NOT IN (?)", "cancelled").Find(&users)

func (*DB) Raw

func (db *DB) Raw(sql string, values ...interface{}) (tx *DB)

func (*DB) Rollback

func (db *DB) Rollback() *DB

Rollback rollback a transaction

func (*DB) RollbackTo added in v0.2.9

func (db *DB) RollbackTo(name string) *DB

func (*DB) Row

func (db *DB) Row() *sql.Row

func (*DB) Rows

func (db *DB) Rows() (*sql.Rows, error)

func (*DB) Save

func (db *DB) Save(value interface{}) (tx *DB)

Save update value in database, if the value doesn't have primary key, will insert it

func (*DB) SavePoint added in v0.2.9

func (db *DB) SavePoint(name string) *DB

func (*DB) Scan

func (db *DB) Scan(dest interface{}) (tx *DB)

Scan scan value to a struct

func (*DB) ScanRows

func (db *DB) ScanRows(rows *sql.Rows, dest interface{}) error

func (*DB) Scopes

func (db *DB) Scopes(funcs ...func(*DB) *DB) (tx *DB)

Scopes pass current database connection to arguments `func(DB) DB`, which could be used to add conditions dynamically

func AmountGreaterThan1000(db *gorm.DB) *gorm.DB {
    return db.Where("amount > ?", 1000)
}

func OrderStatus(status []string) func (db *gorm.DB) *gorm.DB {
    return func (db *gorm.DB) *gorm.DB {
        return db.Scopes(AmountGreaterThan1000).Where("status in (?)", status)
    }
}

db.Scopes(AmountGreaterThan1000, OrderStatus([]string{"paid", "shipped"})).Find(&orders)

func (*DB) Select

func (db *DB) Select(query interface{}, args ...interface{}) (tx *DB)

Select specify fields that you want when querying, creating, updating

func (*DB) Session

func (db *DB) Session(config *Session) *DB

Session create new db session

func (*DB) Set

func (db *DB) Set(key string, value interface{}) *DB

Set store value with key into current db instance's context

func (*DB) SetupJoinTable

func (db *DB) SetupJoinTable(model interface{}, field string, joinTable interface{}) error

SetupJoinTable setup join table schema

func (*DB) Table

func (db *DB) Table(name string, args ...interface{}) (tx *DB)

Table specify the table you would like to run db operations

func (*DB) Take

func (db *DB) Take(dest interface{}, conds ...interface{}) (tx *DB)

Take return a record that match given conditions, the order will depend on the database implementation

func (*DB) ToSQL added in v1.22.3

func (db *DB) ToSQL(queryFn func(tx *DB) *DB) string

ToSQL for generate SQL string.

db.ToSQL(func(tx *gorm.DB) *gorm.DB {
		return tx.Model(&User{}).Where(&User{Name: "foo", Age: 20})
			.Limit(10).Offset(5)
			.Order("name ASC")
			.First(&User{})
})

func (*DB) Transaction

func (db *DB) Transaction(fc func(tx *DB) error, opts ...*sql.TxOptions) (err error)

Transaction start a transaction as a block, return error will rollback, otherwise to commit.

func (*DB) Unscoped

func (db *DB) Unscoped() (tx *DB)

func (*DB) Update

func (db *DB) Update(column string, value interface{}) (tx *DB)

Update update attributes with callbacks, refer: https://gorm.io/docs/update.html#Update-Changed-Fields

func (*DB) UpdateColumn

func (db *DB) UpdateColumn(column string, value interface{}) (tx *DB)

func (*DB) UpdateColumns

func (db *DB) UpdateColumns(values interface{}) (tx *DB)

func (*DB) Updates

func (db *DB) Updates(values interface{}) (tx *DB)

Updates update attributes with callbacks, refer: https://gorm.io/docs/update.html#Update-Changed-Fields

func (*DB) Use added in v0.2.13

func (db *DB) Use(plugin Plugin) error

Use use plugin

func (*DB) Where

func (db *DB) Where(query interface{}, args ...interface{}) (tx *DB)

Where add conditions

func (*DB) WithContext

func (db *DB) WithContext(ctx context.Context) *DB

WithContext change current instance db's context to ctx

type DeletedAt

type DeletedAt sql.NullTime

func (DeletedAt) DeleteClauses

func (DeletedAt) DeleteClauses(f *schema.Field) []clause.Interface

func (DeletedAt) MarshalJSON added in v1.20.3

func (n DeletedAt) MarshalJSON() ([]byte, error)

func (DeletedAt) QueryClauses

func (DeletedAt) QueryClauses(f *schema.Field) []clause.Interface

func (*DeletedAt) Scan

func (n *DeletedAt) Scan(value interface{}) error

Scan implements the Scanner interface.

func (*DeletedAt) UnmarshalJSON added in v1.20.3

func (n *DeletedAt) UnmarshalJSON(b []byte) error

func (DeletedAt) UpdateClauses added in v1.21.11

func (DeletedAt) UpdateClauses(f *schema.Field) []clause.Interface

func (DeletedAt) Value

func (n DeletedAt) Value() (driver.Value, error)

Value implements the driver Valuer interface.

type Dialector

type Dialector interface {
	Name() string
	Initialize(*DB) error
	Migrator(db *DB) Migrator
	DataTypeOf(*schema.Field) string
	DefaultValueOf(*schema.Field) clause.Expression
	BindVarTo(writer clause.Writer, stmt *Statement, v interface{})
	QuoteTo(clause.Writer, string)
	Explain(sql string, vars ...interface{}) string
}

Dialector GORM database dialector

type GetDBConnector added in v1.21.5

type GetDBConnector interface {
	GetDBConn() (*sql.DB, error)
}

GetDBConnector SQL db connector

type Index added in v1.23.7

type Index interface {
	Table() string
	Name() string
	Columns() []string
	PrimaryKey() (isPrimaryKey bool, ok bool)
	Unique() (unique bool, ok bool)
	Option() string
}

type Migrator

type Migrator interface {
	// AutoMigrate
	AutoMigrate(dst ...interface{}) error

	// Database
	CurrentDatabase() string
	FullDataTypeOf(*schema.Field) clause.Expr

	// Tables
	CreateTable(dst ...interface{}) error
	DropTable(dst ...interface{}) error
	HasTable(dst interface{}) bool
	RenameTable(oldName, newName interface{}) error
	GetTables() (tableList []string, err error)

	// Columns
	AddColumn(dst interface{}, field string) error
	DropColumn(dst interface{}, field string) error
	AlterColumn(dst interface{}, field string) error
	MigrateColumn(dst interface{}, field *schema.Field, columnType ColumnType) error
	HasColumn(dst interface{}, field string) bool
	RenameColumn(dst interface{}, oldName, field string) error
	ColumnTypes(dst interface{}) ([]ColumnType, error)

	// Views
	CreateView(name string, option ViewOption) error
	DropView(name string) error

	// Constraints
	CreateConstraint(dst interface{}, name string) error
	DropConstraint(dst interface{}, name string) error
	HasConstraint(dst interface{}, name string) bool

	// Indexes
	CreateIndex(dst interface{}, name string) error
	DropIndex(dst interface{}, name string) error
	HasIndex(dst interface{}, name string) bool
	RenameIndex(dst interface{}, oldName, newName string) error
	GetIndexes(dst interface{}) ([]Index, error)
}

Migrator migrator interface

type Model

type Model struct {
	ID        uint `gorm:"primarykey"`
	CreatedAt time.Time
	UpdatedAt time.Time
	DeletedAt DeletedAt `gorm:"index"`
}

Model a basic GoLang struct which includes the following fields: ID, CreatedAt, UpdatedAt, DeletedAt It may be embedded into your model or you may build your own model without it

type User struct {
  gorm.Model
}

type Option added in v1.21.0

type Option interface {
	Apply(*Config) error
	AfterInitialize(*DB) error
}

Option gorm option interface

type Plugin added in v0.2.13

type Plugin interface {
	Name() string
	Initialize(*DB) error
}

Plugin GORM plugin interface

type PreparedStmtDB added in v0.2.3

type PreparedStmtDB struct {
	Stmts       map[string]Stmt
	PreparedSQL []string
	Mux         *sync.RWMutex
	ConnPool
}

func (*PreparedStmtDB) BeginTx added in v0.2.3

func (db *PreparedStmtDB) BeginTx(ctx context.Context, opt *sql.TxOptions) (ConnPool, error)

func (*PreparedStmtDB) Close added in v0.2.13

func (db *PreparedStmtDB) Close()

func (*PreparedStmtDB) ExecContext added in v0.2.3

func (db *PreparedStmtDB) ExecContext(ctx context.Context, query string, args ...interface{}) (result sql.Result, err error)

func (*PreparedStmtDB) GetDBConn added in v1.21.6

func (db *PreparedStmtDB) GetDBConn() (*sql.DB, error)

func (*PreparedStmtDB) QueryContext added in v0.2.3

func (db *PreparedStmtDB) QueryContext(ctx context.Context, query string, args ...interface{}) (rows *sql.Rows, err error)

func (*PreparedStmtDB) QueryRowContext added in v0.2.3

func (db *PreparedStmtDB) QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row

type PreparedStmtTX added in v0.2.3

type PreparedStmtTX struct {
	Tx
	PreparedStmtDB *PreparedStmtDB
}

func (*PreparedStmtTX) Commit added in v1.20.1

func (tx *PreparedStmtTX) Commit() error

func (*PreparedStmtTX) ExecContext added in v0.2.3

func (tx *PreparedStmtTX) ExecContext(ctx context.Context, query string, args ...interface{}) (result sql.Result, err error)

func (*PreparedStmtTX) QueryContext added in v0.2.3

func (tx *PreparedStmtTX) QueryContext(ctx context.Context, query string, args ...interface{}) (rows *sql.Rows, err error)

func (*PreparedStmtTX) QueryRowContext added in v0.2.3

func (tx *PreparedStmtTX) QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row

func (*PreparedStmtTX) Rollback added in v1.20.1

func (tx *PreparedStmtTX) Rollback() error

type Rows added in v1.23.4

type Rows interface {
	Columns() ([]string, error)
	ColumnTypes() ([]*sql.ColumnType, error)
	Next() bool
	Scan(dest ...interface{}) error
	Err() error
	Close() error
}

Rows rows interface

type SavePointerDialectorInterface added in v0.2.9

type SavePointerDialectorInterface interface {
	SavePoint(tx *DB, name string) error
	RollbackTo(tx *DB, name string) error
}

SavePointerDialectorInterface save pointer interface

type ScanMode added in v1.22.0

type ScanMode uint8

ScanMode scan data mode

const (
	ScanInitialized         ScanMode = 1 << 0 // 1
	ScanUpdate              ScanMode = 1 << 1 // 2
	ScanOnConflictDoNothing ScanMode = 1 << 2 // 4
)

scan modes

type Session

type Session struct {
	DryRun                   bool
	PrepareStmt              bool
	NewDB                    bool
	Initialized              bool
	SkipHooks                bool
	SkipDefaultTransaction   bool
	DisableNestedTransaction bool
	AllowGlobalUpdate        bool
	FullSaveAssociations     bool
	QueryFields              bool
	Context                  context.Context
	Logger                   logger.Interface
	NowFunc                  func() time.Time
	CreateBatchSize          int
}

Session session config when create session with Session() method

type SoftDeleteDeleteClause added in v0.2.32

type SoftDeleteDeleteClause struct {
	Field *schema.Field
}

func (SoftDeleteDeleteClause) Build added in v0.2.32

func (SoftDeleteDeleteClause) MergeClause added in v0.2.32

func (sd SoftDeleteDeleteClause) MergeClause(*clause.Clause)

func (SoftDeleteDeleteClause) ModifyStatement added in v0.2.32

func (sd SoftDeleteDeleteClause) ModifyStatement(stmt *Statement)

func (SoftDeleteDeleteClause) Name added in v0.2.32

func (sd SoftDeleteDeleteClause) Name() string

type SoftDeleteQueryClause added in v0.2.32

type SoftDeleteQueryClause struct {
	Field *schema.Field
}

func (SoftDeleteQueryClause) Build added in v0.2.32

func (SoftDeleteQueryClause) MergeClause added in v0.2.32

func (sd SoftDeleteQueryClause) MergeClause(*clause.Clause)

func (SoftDeleteQueryClause) ModifyStatement added in v0.2.32

func (sd SoftDeleteQueryClause) ModifyStatement(stmt *Statement)

func (SoftDeleteQueryClause) Name added in v0.2.32

func (sd SoftDeleteQueryClause) Name() string

type SoftDeleteUpdateClause added in v1.21.11

type SoftDeleteUpdateClause struct {
	Field *schema.Field
}

func (SoftDeleteUpdateClause) Build added in v1.21.11

func (SoftDeleteUpdateClause) MergeClause added in v1.21.11

func (sd SoftDeleteUpdateClause) MergeClause(*clause.Clause)

func (SoftDeleteUpdateClause) ModifyStatement added in v1.21.11

func (sd SoftDeleteUpdateClause) ModifyStatement(stmt *Statement)

func (SoftDeleteUpdateClause) Name added in v1.21.11

func (sd SoftDeleteUpdateClause) Name() string

type Statement

type Statement struct {
	*DB
	TableExpr            *clause.Expr
	Table                string
	Model                interface{}
	Unscoped             bool
	Dest                 interface{}
	ReflectValue         reflect.Value
	Clauses              map[string]clause.Clause
	BuildClauses         []string
	Distinct             bool
	Selects              []string // selected columns
	Omits                []string // omit columns
	Joins                []join
	Preloads             map[string][]interface{}
	Settings             sync.Map
	ConnPool             ConnPool
	Schema               *schema.Schema
	Context              context.Context
	RaiseErrorOnNotFound bool
	SkipHooks            bool
	SQL                  strings.Builder
	Vars                 []interface{}
	CurDestIndex         int
	// contains filtered or unexported fields
}

Statement statement

func (*Statement) AddClause

func (stmt *Statement) AddClause(v clause.Interface)

AddClause add clause

func (*Statement) AddClauseIfNotExists

func (stmt *Statement) AddClauseIfNotExists(v clause.Interface)

AddClauseIfNotExists add clause if not exists

func (*Statement) AddVar

func (stmt *Statement) AddVar(writer clause.Writer, vars ...interface{})

AddVar add var

func (*Statement) Build

func (stmt *Statement) Build(clauses ...string)

Build build sql with clauses names

func (*Statement) BuildCondition added in v0.2.5

func (stmt *Statement) BuildCondition(query interface{}, args ...interface{}) []clause.Expression

BuildCondition build condition

func (*Statement) Changed added in v0.2.19

func (stmt *Statement) Changed(fields ...string) bool

Changed check model changed or not when updating

func (*Statement) Parse

func (stmt *Statement) Parse(value interface{}) (err error)

func (*Statement) ParseWithSpecialTableName added in v1.22.0

func (stmt *Statement) ParseWithSpecialTableName(value interface{}, specialTableName string) (err error)

func (*Statement) Quote

func (stmt *Statement) Quote(field interface{}) string

Quote returns quoted value

func (*Statement) QuoteTo

func (stmt *Statement) QuoteTo(writer clause.Writer, field interface{})

QuoteTo write quoted value to writer

func (*Statement) SelectAndOmitColumns added in v0.2.19

func (stmt *Statement) SelectAndOmitColumns(requireCreate, requireUpdate bool) (map[string]bool, bool)

SelectAndOmitColumns get select and omit columns, select -> true, omit -> false

func (*Statement) SetColumn added in v0.2.19

func (stmt *Statement) SetColumn(name string, value interface{}, fromCallbacks ...bool)

SetColumn set column's value

stmt.SetColumn("Name", "jinzhu") // Hooks Method
stmt.SetColumn("Name", "jinzhu", true) // Callbacks Method

func (*Statement) WriteByte

func (stmt *Statement) WriteByte(c byte) error

WriteByte write byte

func (*Statement) WriteQuoted

func (stmt *Statement) WriteQuoted(value interface{})

WriteQuoted write quoted value

func (*Statement) WriteString

func (stmt *Statement) WriteString(str string) (int, error)

WriteString write string

type StatementModifier

type StatementModifier interface {
	ModifyStatement(*Statement)
}

StatementModifier statement modifier interface

type Stmt added in v1.20.11

type Stmt struct {
	*sql.Stmt
	Transaction bool
}

type Tx added in v1.23.2

type Tx interface {
	ConnPool
	TxCommitter
	StmtContext(ctx context.Context, stmt *sql.Stmt) *sql.Stmt
}

Tx sql.Tx interface

type TxBeginner

type TxBeginner interface {
	BeginTx(ctx context.Context, opts *sql.TxOptions) (*sql.Tx, error)
}

TxBeginner tx beginner

type TxCommitter added in v0.2.3

type TxCommitter interface {
	Commit() error
	Rollback() error
}

TxCommitter tx committer

type Valuer added in v0.2.38

type Valuer interface {
	GormValue(context.Context, *DB) clause.Expr
}

Valuer gorm valuer interface

type ViewOption

type ViewOption struct {
	Replace     bool
	CheckOption string
	Query       *DB
}

ViewOption view option

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