github.com/ngocphuongnb/tetua@v0.0.7-alpha/packages/entrepository/ent/topic_update.go

// Code generated by entc, DO NOT EDIT.

package ent

import (
	"context"
	"errors"
	"fmt"
	"time"

	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/dialect/sql/sqlgraph"
	"entgo.io/ent/schema/field"
	"github.com/ngocphuongnb/tetua/packages/entrepository/ent/post"
	"github.com/ngocphuongnb/tetua/packages/entrepository/ent/predicate"
	"github.com/ngocphuongnb/tetua/packages/entrepository/ent/topic"
)

// TopicUpdate is the builder for updating Topic entities.
type TopicUpdate struct {
	config
	hooks    []Hook
	mutation *TopicMutation
}

// Where appends a list predicates to the TopicUpdate builder.
func (tu *TopicUpdate) Where(ps ...predicate.Topic) *TopicUpdate {
	tu.mutation.Where(ps...)
	return tu
}

// SetUpdatedAt sets the "updated_at" field.
func (tu *TopicUpdate) SetUpdatedAt(t time.Time) *TopicUpdate {
	tu.mutation.SetUpdatedAt(t)
	return tu
}

// SetDeletedAt sets the "deleted_at" field.
func (tu *TopicUpdate) SetDeletedAt(t time.Time) *TopicUpdate {
	tu.mutation.SetDeletedAt(t)
	return tu
}

// SetNillableDeletedAt sets the "deleted_at" field if the given value is not nil.
func (tu *TopicUpdate) SetNillableDeletedAt(t *time.Time) *TopicUpdate {
	if t != nil {
		tu.SetDeletedAt(*t)
	}
	return tu
}

// ClearDeletedAt clears the value of the "deleted_at" field.
func (tu *TopicUpdate) ClearDeletedAt() *TopicUpdate {
	tu.mutation.ClearDeletedAt()
	return tu
}

// SetName sets the "name" field.
func (tu *TopicUpdate) SetName(s string) *TopicUpdate {
	tu.mutation.SetName(s)
	return tu
}

// SetSlug sets the "slug" field.
func (tu *TopicUpdate) SetSlug(s string) *TopicUpdate {
	tu.mutation.SetSlug(s)
	return tu
}

// SetDescription sets the "description" field.
func (tu *TopicUpdate) SetDescription(s string) *TopicUpdate {
	tu.mutation.SetDescription(s)
	return tu
}

// SetNillableDescription sets the "description" field if the given value is not nil.
func (tu *TopicUpdate) SetNillableDescription(s *string) *TopicUpdate {
	if s != nil {
		tu.SetDescription(*s)
	}
	return tu
}

// ClearDescription clears the value of the "description" field.
func (tu *TopicUpdate) ClearDescription() *TopicUpdate {
	tu.mutation.ClearDescription()
	return tu
}

// SetContent sets the "content" field.
func (tu *TopicUpdate) SetContent(s string) *TopicUpdate {
	tu.mutation.SetContent(s)
	return tu
}

// SetContentHTML sets the "content_html" field.
func (tu *TopicUpdate) SetContentHTML(s string) *TopicUpdate {
	tu.mutation.SetContentHTML(s)
	return tu
}

// SetParentID sets the "parent_id" field.
func (tu *TopicUpdate) SetParentID(i int) *TopicUpdate {
	tu.mutation.SetParentID(i)
	return tu
}

// SetNillableParentID sets the "parent_id" field if the given value is not nil.
func (tu *TopicUpdate) SetNillableParentID(i *int) *TopicUpdate {
	if i != nil {
		tu.SetParentID(*i)
	}
	return tu
}

// ClearParentID clears the value of the "parent_id" field.
func (tu *TopicUpdate) ClearParentID() *TopicUpdate {
	tu.mutation.ClearParentID()
	return tu
}

// AddPostIDs adds the "posts" edge to the Post entity by IDs.
func (tu *TopicUpdate) AddPostIDs(ids ...int) *TopicUpdate {
	tu.mutation.AddPostIDs(ids...)
	return tu
}

// AddPosts adds the "posts" edges to the Post entity.
func (tu *TopicUpdate) AddPosts(p ...*Post) *TopicUpdate {
	ids := make([]int, len(p))
	for i := range p {
		ids[i] = p[i].ID
	}
	return tu.AddPostIDs(ids...)
}

// AddChildIDs adds the "children" edge to the Topic entity by IDs.
func (tu *TopicUpdate) AddChildIDs(ids ...int) *TopicUpdate {
	tu.mutation.AddChildIDs(ids...)
	return tu
}

// AddChildren adds the "children" edges to the Topic entity.
func (tu *TopicUpdate) AddChildren(t ...*Topic) *TopicUpdate {
	ids := make([]int, len(t))
	for i := range t {
		ids[i] = t[i].ID
	}
	return tu.AddChildIDs(ids...)
}

// SetParent sets the "parent" edge to the Topic entity.
func (tu *TopicUpdate) SetParent(t *Topic) *TopicUpdate {
	return tu.SetParentID(t.ID)
}

// Mutation returns the TopicMutation object of the builder.
func (tu *TopicUpdate) Mutation() *TopicMutation {
	return tu.mutation
}

// ClearPosts clears all "posts" edges to the Post entity.
func (tu *TopicUpdate) ClearPosts() *TopicUpdate {
	tu.mutation.ClearPosts()
	return tu
}

// RemovePostIDs removes the "posts" edge to Post entities by IDs.
func (tu *TopicUpdate) RemovePostIDs(ids ...int) *TopicUpdate {
	tu.mutation.RemovePostIDs(ids...)
	return tu
}

// RemovePosts removes "posts" edges to Post entities.
func (tu *TopicUpdate) RemovePosts(p ...*Post) *TopicUpdate {
	ids := make([]int, len(p))
	for i := range p {
		ids[i] = p[i].ID
	}
	return tu.RemovePostIDs(ids...)
}

// ClearChildren clears all "children" edges to the Topic entity.
func (tu *TopicUpdate) ClearChildren() *TopicUpdate {
	tu.mutation.ClearChildren()
	return tu
}

// RemoveChildIDs removes the "children" edge to Topic entities by IDs.
func (tu *TopicUpdate) RemoveChildIDs(ids ...int) *TopicUpdate {
	tu.mutation.RemoveChildIDs(ids...)
	return tu
}

// RemoveChildren removes "children" edges to Topic entities.
func (tu *TopicUpdate) RemoveChildren(t ...*Topic) *TopicUpdate {
	ids := make([]int, len(t))
	for i := range t {
		ids[i] = t[i].ID
	}
	return tu.RemoveChildIDs(ids...)
}

// ClearParent clears the "parent" edge to the Topic entity.
func (tu *TopicUpdate) ClearParent() *TopicUpdate {
	tu.mutation.ClearParent()
	return tu
}

// Save executes the query and returns the number of nodes affected by the update operation.
func (tu *TopicUpdate) Save(ctx context.Context) (int, error) {
	var (
		err      error
		affected int
	)
	tu.defaults()
	if len(tu.hooks) == 0 {
		affected, err = tu.sqlSave(ctx)
	} else {
		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
			mutation, ok := m.(*TopicMutation)
			if !ok {
				return nil, fmt.Errorf("unexpected mutation type %T", m)
			}
			tu.mutation = mutation
			affected, err = tu.sqlSave(ctx)
			mutation.done = true
			return affected, err
		})
		for i := len(tu.hooks) - 1; i >= 0; i-- {
			if tu.hooks[i] == nil {
				return 0, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
			}
			mut = tu.hooks[i](mut)
		}
		if _, err := mut.Mutate(ctx, tu.mutation); err != nil {
			return 0, err
		}
	}
	return affected, err
}

// SaveX is like Save, but panics if an error occurs.
func (tu *TopicUpdate) SaveX(ctx context.Context) int {
	affected, err := tu.Save(ctx)
	if err != nil {
		panic(err)
	}
	return affected
}

// Exec executes the query.
func (tu *TopicUpdate) Exec(ctx context.Context) error {
	_, err := tu.Save(ctx)
	return err
}

// ExecX is like Exec, but panics if an error occurs.
func (tu *TopicUpdate) ExecX(ctx context.Context) {
	if err := tu.Exec(ctx); err != nil {
		panic(err)
	}
}

// defaults sets the default values of the builder before save.
func (tu *TopicUpdate) defaults() {
	if _, ok := tu.mutation.UpdatedAt(); !ok {
		v := topic.UpdateDefaultUpdatedAt()
		tu.mutation.SetUpdatedAt(v)
	}
}

func (tu *TopicUpdate) sqlSave(ctx context.Context) (n int, err error) {
	_spec := &sqlgraph.UpdateSpec{
		Node: &sqlgraph.NodeSpec{
			Table:   topic.Table,
			Columns: topic.Columns,
			ID: &sqlgraph.FieldSpec{
				Type:   field.TypeInt,
				Column: topic.FieldID,
			},
		},
	}
	if ps := tu.mutation.predicates; len(ps) > 0 {
		_spec.Predicate = func(selector *sql.Selector) {
			for i := range ps {
				ps[i](selector)
			}
		}
	}
	if value, ok := tu.mutation.UpdatedAt(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeTime,
			Value:  value,
			Column: topic.FieldUpdatedAt,
		})
	}
	if value, ok := tu.mutation.DeletedAt(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeTime,
			Value:  value,
			Column: topic.FieldDeletedAt,
		})
	}
	if tu.mutation.DeletedAtCleared() {
		_spec.Fields.Clear = append(_spec.Fields.Clear, &sqlgraph.FieldSpec{
			Type:   field.TypeTime,
			Column: topic.FieldDeletedAt,
		})
	}
	if value, ok := tu.mutation.Name(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldName,
		})
	}
	if value, ok := tu.mutation.Slug(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldSlug,
		})
	}
	if value, ok := tu.mutation.Description(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldDescription,
		})
	}
	if tu.mutation.DescriptionCleared() {
		_spec.Fields.Clear = append(_spec.Fields.Clear, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Column: topic.FieldDescription,
		})
	}
	if value, ok := tu.mutation.Content(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldContent,
		})
	}
	if value, ok := tu.mutation.ContentHTML(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldContentHTML,
		})
	}
	if tu.mutation.PostsCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   topic.PostsTable,
			Columns: topic.PostsPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: post.FieldID,
				},
			},
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tu.mutation.RemovedPostsIDs(); len(nodes) > 0 && !tu.mutation.PostsCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   topic.PostsTable,
			Columns: topic.PostsPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: post.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tu.mutation.PostsIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   topic.PostsTable,
			Columns: topic.PostsPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: post.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Add = append(_spec.Edges.Add, edge)
	}
	if tu.mutation.ChildrenCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.O2M,
			Inverse: false,
			Table:   topic.ChildrenTable,
			Columns: []string{topic.ChildrenColumn},
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tu.mutation.RemovedChildrenIDs(); len(nodes) > 0 && !tu.mutation.ChildrenCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.O2M,
			Inverse: false,
			Table:   topic.ChildrenTable,
			Columns: []string{topic.ChildrenColumn},
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tu.mutation.ChildrenIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.O2M,
			Inverse: false,
			Table:   topic.ChildrenTable,
			Columns: []string{topic.ChildrenColumn},
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Add = append(_spec.Edges.Add, edge)
	}
	if tu.mutation.ParentCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2O,
			Inverse: true,
			Table:   topic.ParentTable,
			Columns: []string{topic.ParentColumn},
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tu.mutation.ParentIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2O,
			Inverse: true,
			Table:   topic.ParentTable,
			Columns: []string{topic.ParentColumn},
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Add = append(_spec.Edges.Add, edge)
	}
	if n, err = sqlgraph.UpdateNodes(ctx, tu.driver, _spec); err != nil {
		if _, ok := err.(*sqlgraph.NotFoundError); ok {
			err = &NotFoundError{topic.Label}
		} else if sqlgraph.IsConstraintError(err) {
			err = &ConstraintError{err.Error(), err}
		}
		return 0, err
	}
	return n, nil
}

// TopicUpdateOne is the builder for updating a single Topic entity.
type TopicUpdateOne struct {
	config
	fields   []string
	hooks    []Hook
	mutation *TopicMutation
}

// SetUpdatedAt sets the "updated_at" field.
func (tuo *TopicUpdateOne) SetUpdatedAt(t time.Time) *TopicUpdateOne {
	tuo.mutation.SetUpdatedAt(t)
	return tuo
}

// SetDeletedAt sets the "deleted_at" field.
func (tuo *TopicUpdateOne) SetDeletedAt(t time.Time) *TopicUpdateOne {
	tuo.mutation.SetDeletedAt(t)
	return tuo
}

// SetNillableDeletedAt sets the "deleted_at" field if the given value is not nil.
func (tuo *TopicUpdateOne) SetNillableDeletedAt(t *time.Time) *TopicUpdateOne {
	if t != nil {
		tuo.SetDeletedAt(*t)
	}
	return tuo
}

// ClearDeletedAt clears the value of the "deleted_at" field.
func (tuo *TopicUpdateOne) ClearDeletedAt() *TopicUpdateOne {
	tuo.mutation.ClearDeletedAt()
	return tuo
}

// SetName sets the "name" field.
func (tuo *TopicUpdateOne) SetName(s string) *TopicUpdateOne {
	tuo.mutation.SetName(s)
	return tuo
}

// SetSlug sets the "slug" field.
func (tuo *TopicUpdateOne) SetSlug(s string) *TopicUpdateOne {
	tuo.mutation.SetSlug(s)
	return tuo
}

// SetDescription sets the "description" field.
func (tuo *TopicUpdateOne) SetDescription(s string) *TopicUpdateOne {
	tuo.mutation.SetDescription(s)
	return tuo
}

// SetNillableDescription sets the "description" field if the given value is not nil.
func (tuo *TopicUpdateOne) SetNillableDescription(s *string) *TopicUpdateOne {
	if s != nil {
		tuo.SetDescription(*s)
	}
	return tuo
}

// ClearDescription clears the value of the "description" field.
func (tuo *TopicUpdateOne) ClearDescription() *TopicUpdateOne {
	tuo.mutation.ClearDescription()
	return tuo
}

// SetContent sets the "content" field.
func (tuo *TopicUpdateOne) SetContent(s string) *TopicUpdateOne {
	tuo.mutation.SetContent(s)
	return tuo
}

// SetContentHTML sets the "content_html" field.
func (tuo *TopicUpdateOne) SetContentHTML(s string) *TopicUpdateOne {
	tuo.mutation.SetContentHTML(s)
	return tuo
}

// SetParentID sets the "parent_id" field.
func (tuo *TopicUpdateOne) SetParentID(i int) *TopicUpdateOne {
	tuo.mutation.SetParentID(i)
	return tuo
}

// SetNillableParentID sets the "parent_id" field if the given value is not nil.
func (tuo *TopicUpdateOne) SetNillableParentID(i *int) *TopicUpdateOne {
	if i != nil {
		tuo.SetParentID(*i)
	}
	return tuo
}

// ClearParentID clears the value of the "parent_id" field.
func (tuo *TopicUpdateOne) ClearParentID() *TopicUpdateOne {
	tuo.mutation.ClearParentID()
	return tuo
}

// AddPostIDs adds the "posts" edge to the Post entity by IDs.
func (tuo *TopicUpdateOne) AddPostIDs(ids ...int) *TopicUpdateOne {
	tuo.mutation.AddPostIDs(ids...)
	return tuo
}

// AddPosts adds the "posts" edges to the Post entity.
func (tuo *TopicUpdateOne) AddPosts(p ...*Post) *TopicUpdateOne {
	ids := make([]int, len(p))
	for i := range p {
		ids[i] = p[i].ID
	}
	return tuo.AddPostIDs(ids...)
}

// AddChildIDs adds the "children" edge to the Topic entity by IDs.
func (tuo *TopicUpdateOne) AddChildIDs(ids ...int) *TopicUpdateOne {
	tuo.mutation.AddChildIDs(ids...)
	return tuo
}

// AddChildren adds the "children" edges to the Topic entity.
func (tuo *TopicUpdateOne) AddChildren(t ...*Topic) *TopicUpdateOne {
	ids := make([]int, len(t))
	for i := range t {
		ids[i] = t[i].ID
	}
	return tuo.AddChildIDs(ids...)
}

// SetParent sets the "parent" edge to the Topic entity.
func (tuo *TopicUpdateOne) SetParent(t *Topic) *TopicUpdateOne {
	return tuo.SetParentID(t.ID)
}

// Mutation returns the TopicMutation object of the builder.
func (tuo *TopicUpdateOne) Mutation() *TopicMutation {
	return tuo.mutation
}

// ClearPosts clears all "posts" edges to the Post entity.
func (tuo *TopicUpdateOne) ClearPosts() *TopicUpdateOne {
	tuo.mutation.ClearPosts()
	return tuo
}

// RemovePostIDs removes the "posts" edge to Post entities by IDs.
func (tuo *TopicUpdateOne) RemovePostIDs(ids ...int) *TopicUpdateOne {
	tuo.mutation.RemovePostIDs(ids...)
	return tuo
}

// RemovePosts removes "posts" edges to Post entities.
func (tuo *TopicUpdateOne) RemovePosts(p ...*Post) *TopicUpdateOne {
	ids := make([]int, len(p))
	for i := range p {
		ids[i] = p[i].ID
	}
	return tuo.RemovePostIDs(ids...)
}

// ClearChildren clears all "children" edges to the Topic entity.
func (tuo *TopicUpdateOne) ClearChildren() *TopicUpdateOne {
	tuo.mutation.ClearChildren()
	return tuo
}

// RemoveChildIDs removes the "children" edge to Topic entities by IDs.
func (tuo *TopicUpdateOne) RemoveChildIDs(ids ...int) *TopicUpdateOne {
	tuo.mutation.RemoveChildIDs(ids...)
	return tuo
}

// RemoveChildren removes "children" edges to Topic entities.
func (tuo *TopicUpdateOne) RemoveChildren(t ...*Topic) *TopicUpdateOne {
	ids := make([]int, len(t))
	for i := range t {
		ids[i] = t[i].ID
	}
	return tuo.RemoveChildIDs(ids...)
}

// ClearParent clears the "parent" edge to the Topic entity.
func (tuo *TopicUpdateOne) ClearParent() *TopicUpdateOne {
	tuo.mutation.ClearParent()
	return tuo
}

// Select allows selecting one or more fields (columns) of the returned entity.
// The default is selecting all fields defined in the entity schema.
func (tuo *TopicUpdateOne) Select(field string, fields ...string) *TopicUpdateOne {
	tuo.fields = append([]string{field}, fields...)
	return tuo
}

// Save executes the query and returns the updated Topic entity.
func (tuo *TopicUpdateOne) Save(ctx context.Context) (*Topic, error) {
	var (
		err  error
		node *Topic
	)
	tuo.defaults()
	if len(tuo.hooks) == 0 {
		node, err = tuo.sqlSave(ctx)
	} else {
		var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
			mutation, ok := m.(*TopicMutation)
			if !ok {
				return nil, fmt.Errorf("unexpected mutation type %T", m)
			}
			tuo.mutation = mutation
			node, err = tuo.sqlSave(ctx)
			mutation.done = true
			return node, err
		})
		for i := len(tuo.hooks) - 1; i >= 0; i-- {
			if tuo.hooks[i] == nil {
				return nil, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
			}
			mut = tuo.hooks[i](mut)
		}
		if _, err := mut.Mutate(ctx, tuo.mutation); err != nil {
			return nil, err
		}
	}
	return node, err
}

// SaveX is like Save, but panics if an error occurs.
func (tuo *TopicUpdateOne) SaveX(ctx context.Context) *Topic {
	node, err := tuo.Save(ctx)
	if err != nil {
		panic(err)
	}
	return node
}

// Exec executes the query on the entity.
func (tuo *TopicUpdateOne) Exec(ctx context.Context) error {
	_, err := tuo.Save(ctx)
	return err
}

// ExecX is like Exec, but panics if an error occurs.
func (tuo *TopicUpdateOne) ExecX(ctx context.Context) {
	if err := tuo.Exec(ctx); err != nil {
		panic(err)
	}
}

// defaults sets the default values of the builder before save.
func (tuo *TopicUpdateOne) defaults() {
	if _, ok := tuo.mutation.UpdatedAt(); !ok {
		v := topic.UpdateDefaultUpdatedAt()
		tuo.mutation.SetUpdatedAt(v)
	}
}

func (tuo *TopicUpdateOne) sqlSave(ctx context.Context) (_node *Topic, err error) {
	_spec := &sqlgraph.UpdateSpec{
		Node: &sqlgraph.NodeSpec{
			Table:   topic.Table,
			Columns: topic.Columns,
			ID: &sqlgraph.FieldSpec{
				Type:   field.TypeInt,
				Column: topic.FieldID,
			},
		},
	}
	id, ok := tuo.mutation.ID()
	if !ok {
		return nil, &ValidationError{Name: "id", err: errors.New(`ent: missing "Topic.id" for update`)}
	}
	_spec.Node.ID.Value = id
	if fields := tuo.fields; len(fields) > 0 {
		_spec.Node.Columns = make([]string, 0, len(fields))
		_spec.Node.Columns = append(_spec.Node.Columns, topic.FieldID)
		for _, f := range fields {
			if !topic.ValidColumn(f) {
				return nil, &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
			}
			if f != topic.FieldID {
				_spec.Node.Columns = append(_spec.Node.Columns, f)
			}
		}
	}
	if ps := tuo.mutation.predicates; len(ps) > 0 {
		_spec.Predicate = func(selector *sql.Selector) {
			for i := range ps {
				ps[i](selector)
			}
		}
	}
	if value, ok := tuo.mutation.UpdatedAt(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeTime,
			Value:  value,
			Column: topic.FieldUpdatedAt,
		})
	}
	if value, ok := tuo.mutation.DeletedAt(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeTime,
			Value:  value,
			Column: topic.FieldDeletedAt,
		})
	}
	if tuo.mutation.DeletedAtCleared() {
		_spec.Fields.Clear = append(_spec.Fields.Clear, &sqlgraph.FieldSpec{
			Type:   field.TypeTime,
			Column: topic.FieldDeletedAt,
		})
	}
	if value, ok := tuo.mutation.Name(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldName,
		})
	}
	if value, ok := tuo.mutation.Slug(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldSlug,
		})
	}
	if value, ok := tuo.mutation.Description(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldDescription,
		})
	}
	if tuo.mutation.DescriptionCleared() {
		_spec.Fields.Clear = append(_spec.Fields.Clear, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Column: topic.FieldDescription,
		})
	}
	if value, ok := tuo.mutation.Content(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldContent,
		})
	}
	if value, ok := tuo.mutation.ContentHTML(); ok {
		_spec.Fields.Set = append(_spec.Fields.Set, &sqlgraph.FieldSpec{
			Type:   field.TypeString,
			Value:  value,
			Column: topic.FieldContentHTML,
		})
	}
	if tuo.mutation.PostsCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   topic.PostsTable,
			Columns: topic.PostsPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: post.FieldID,
				},
			},
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tuo.mutation.RemovedPostsIDs(); len(nodes) > 0 && !tuo.mutation.PostsCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   topic.PostsTable,
			Columns: topic.PostsPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: post.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tuo.mutation.PostsIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2M,
			Inverse: false,
			Table:   topic.PostsTable,
			Columns: topic.PostsPrimaryKey,
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: post.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Add = append(_spec.Edges.Add, edge)
	}
	if tuo.mutation.ChildrenCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.O2M,
			Inverse: false,
			Table:   topic.ChildrenTable,
			Columns: []string{topic.ChildrenColumn},
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tuo.mutation.RemovedChildrenIDs(); len(nodes) > 0 && !tuo.mutation.ChildrenCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.O2M,
			Inverse: false,
			Table:   topic.ChildrenTable,
			Columns: []string{topic.ChildrenColumn},
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tuo.mutation.ChildrenIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.O2M,
			Inverse: false,
			Table:   topic.ChildrenTable,
			Columns: []string{topic.ChildrenColumn},
			Bidi:    true,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Add = append(_spec.Edges.Add, edge)
	}
	if tuo.mutation.ParentCleared() {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2O,
			Inverse: true,
			Table:   topic.ParentTable,
			Columns: []string{topic.ParentColumn},
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		_spec.Edges.Clear = append(_spec.Edges.Clear, edge)
	}
	if nodes := tuo.mutation.ParentIDs(); len(nodes) > 0 {
		edge := &sqlgraph.EdgeSpec{
			Rel:     sqlgraph.M2O,
			Inverse: true,
			Table:   topic.ParentTable,
			Columns: []string{topic.ParentColumn},
			Bidi:    false,
			Target: &sqlgraph.EdgeTarget{
				IDSpec: &sqlgraph.FieldSpec{
					Type:   field.TypeInt,
					Column: topic.FieldID,
				},
			},
		}
		for _, k := range nodes {
			edge.Target.Nodes = append(edge.Target.Nodes, k)
		}
		_spec.Edges.Add = append(_spec.Edges.Add, edge)
	}
	_node = &Topic{config: tuo.config}
	_spec.Assign = _node.assignValues
	_spec.ScanValues = _node.scanValues
	if err = sqlgraph.UpdateNode(ctx, tuo.driver, _spec); err != nil {
		if _, ok := err.(*sqlgraph.NotFoundError); ok {
			err = &NotFoundError{topic.Label}
		} else if sqlgraph.IsConstraintError(err) {
			err = &ConstraintError{err.Error(), err}
		}
		return nil, err
	}
	return _node, nil
}