// Code generated by ent, DO NOT EDIT.

package postcontent

import (
	"fmt"

	"entgo.io/ent/dialect/sql"
	"entgo.io/ent/dialect/sql/sqlgraph"
)

const (
	// Label holds the string label denoting the postcontent type in the database.
	Label = "post_content"
	// FieldID holds the string denoting the id field in the database.
	FieldID = "id"
	// FieldLanguageCode holds the string denoting the language_code field in the database.
	FieldLanguageCode = "language_code"
	// FieldTitle holds the string denoting the title field in the database.
	FieldTitle = "title"
	// FieldContentMarkdown holds the string denoting the content_markdown field in the database.
	FieldContentMarkdown = "content_markdown"
	// FieldSummary holds the string denoting the summary field in the database.
	FieldSummary = "summary"
	// FieldMetaKeywords holds the string denoting the meta_keywords field in the database.
	FieldMetaKeywords = "meta_keywords"
	// FieldMetaDescription holds the string denoting the meta_description field in the database.
	FieldMetaDescription = "meta_description"
	// FieldSlug holds the string denoting the slug field in the database.
	FieldSlug = "slug"
	// EdgePost holds the string denoting the post edge name in mutations.
	EdgePost = "post"
	// Table holds the table name of the postcontent in the database.
	Table = "post_contents"
	// PostTable is the table that holds the post relation/edge.
	PostTable = "post_contents"
	// PostInverseTable is the table name for the Post entity.
	// It exists in this package in order to avoid circular dependency with the "post" package.
	PostInverseTable = "posts"
	// PostColumn is the table column denoting the post relation/edge.
	PostColumn = "post_contents"
)

// Columns holds all SQL columns for postcontent fields.
var Columns = []string{
	FieldID,
	FieldLanguageCode,
	FieldTitle,
	FieldContentMarkdown,
	FieldSummary,
	FieldMetaKeywords,
	FieldMetaDescription,
	FieldSlug,
}

// ForeignKeys holds the SQL foreign-keys that are owned by the "post_contents"
// table and are not defined as standalone fields in the schema.
var ForeignKeys = []string{
	"post_contents",
}

// ValidColumn reports if the column name is valid (part of the table columns).
func ValidColumn(column string) bool {
	for i := range Columns {
		if column == Columns[i] {
			return true
		}
	}
	for i := range ForeignKeys {
		if column == ForeignKeys[i] {
			return true
		}
	}
	return false
}

var (
	// TitleValidator is a validator for the "title" field. It is called by the builders before save.
	TitleValidator func(string) error
	// ContentMarkdownValidator is a validator for the "content_markdown" field. It is called by the builders before save.
	ContentMarkdownValidator func(string) error
	// SummaryValidator is a validator for the "summary" field. It is called by the builders before save.
	SummaryValidator func(string) error
	// SlugValidator is a validator for the "slug" field. It is called by the builders before save.
	SlugValidator func(string) error
)

// LanguageCode defines the type for the "language_code" enum field.
type LanguageCode string

// LanguageCode values.
const (
	LanguageCodeEN      LanguageCode = "en"
	LanguageCodeZH_HANS LanguageCode = "zh-Hans"
	LanguageCodeZH_HANT LanguageCode = "zh-Hant"
)

func (lc LanguageCode) String() string {
	return string(lc)
}

// LanguageCodeValidator is a validator for the "language_code" field enum values. It is called by the builders before save.
func LanguageCodeValidator(lc LanguageCode) error {
	switch lc {
	case LanguageCodeEN, LanguageCodeZH_HANS, LanguageCodeZH_HANT:
		return nil
	default:
		return fmt.Errorf("postcontent: invalid enum value for language_code field: %q", lc)
	}
}

// OrderOption defines the ordering options for the PostContent queries.
type OrderOption func(*sql.Selector)

// ByID orders the results by the id field.
func ByID(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldID, opts...).ToFunc()
}

// ByLanguageCode orders the results by the language_code field.
func ByLanguageCode(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldLanguageCode, opts...).ToFunc()
}

// ByTitle orders the results by the title field.
func ByTitle(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldTitle, opts...).ToFunc()
}

// ByContentMarkdown orders the results by the content_markdown field.
func ByContentMarkdown(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldContentMarkdown, opts...).ToFunc()
}

// BySummary orders the results by the summary field.
func BySummary(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldSummary, opts...).ToFunc()
}

// ByMetaKeywords orders the results by the meta_keywords field.
func ByMetaKeywords(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldMetaKeywords, opts...).ToFunc()
}

// ByMetaDescription orders the results by the meta_description field.
func ByMetaDescription(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldMetaDescription, opts...).ToFunc()
}

// BySlug orders the results by the slug field.
func BySlug(opts ...sql.OrderTermOption) OrderOption {
	return sql.OrderByField(FieldSlug, opts...).ToFunc()
}

// ByPostField orders the results by post field.
func ByPostField(field string, opts ...sql.OrderTermOption) OrderOption {
	return func(s *sql.Selector) {
		sqlgraph.OrderByNeighborTerms(s, newPostStep(), sql.OrderByField(field, opts...))
	}
}
func newPostStep() *sqlgraph.Step {
	return sqlgraph.NewStep(
		sqlgraph.From(Table, FieldID),
		sqlgraph.To(PostInverseTable, FieldID),
		sqlgraph.Edge(sqlgraph.M2O, true, PostTable, PostColumn),
	)
}