sqlboiler/templates/07_relationship_to_one_eager.tpl

{{- if .Table.IsJoinTable -}}
{{- else -}}
	{{- $dot := . -}}
	{{- range .Table.FKeys -}}
		{{- $txt := txtsFromFKey $dot.Tables $dot.Table . -}}
		{{- $varNameSingular := $dot.Table.Name | singular | camelCase -}}
		{{- $arg := printf "maybe%s" $txt.LocalTable.NameGo}}
// Load{{$txt.Function.Name}} allows an eager lookup of values, cached into the
// loaded structs of the objects.
func ({{$varNameSingular}}L) Load{{$txt.Function.Name}}(e boil.Executor, singular bool, {{$arg}} interface{}) error {
	var slice []*{{$txt.LocalTable.NameGo}}
	var object *{{$txt.LocalTable.NameGo}}

	count := 1
	if singular {
		object = {{$arg}}.(*{{$txt.LocalTable.NameGo}})
	} else {
		slice = *{{$arg}}.(*[]*{{$txt.LocalTable.NameGo}})
		count = len(slice)
	}

	args := make([]interface{}, count)
	if singular {
		if object.R == nil {
			object.R = &{{$varNameSingular}}R{}
		}
		args[0] = object.{{$txt.LocalTable.ColumnNameGo}}
	} else {
		for i, obj := range slice {
			if obj.R == nil {
				obj.R = &{{$varNameSingular}}R{}
			}
			args[i] = obj.{{$txt.LocalTable.ColumnNameGo}}
		}
	}

	query := fmt.Sprintf(
		"select * from {{.ForeignTable | $dot.SchemaTable}} where {{.ForeignColumn | $dot.Quotes}} in (%s)",
		strmangle.Placeholders(dialect.IndexPlaceholders, count, 1, 1),
	)

	if boil.DebugMode {
		fmt.Fprintf(boil.DebugWriter, "%s\n%v\n", query, args)
	}

	results, err := e.Query(query, args...)
	if err != nil {
		return errors.Prefix("failed to eager load {{$txt.ForeignTable.NameGo}}", err)
	}
	defer results.Close()

	var resultSlice []*{{$txt.ForeignTable.NameGo}}
	if err = queries.Bind(results, &resultSlice); err != nil {
		return errors.Prefix("failed to bind eager loaded slice {{$txt.ForeignTable.NameGo}}", err)
	}

	{{if not $dot.NoHooks -}}
	if len({{$varNameSingular}}AfterSelectHooks) != 0 {
		for _, obj := range resultSlice {
			if err := obj.doAfterSelectHooks(e); err != nil {
				return errors.Err(err)
			}
		}
	}
	{{- end}}

	if len(resultSlice) == 0 {
		return nil
	}

	if singular {
		object.R.{{$txt.Function.Name}} = resultSlice[0]
		return nil
	}

	for _, local := range slice {
		for _, foreign := range resultSlice {
			{{if $txt.Function.UsesBytes -}}
			if 0 == bytes.Compare(local.{{$txt.Function.LocalAssignment}}, foreign.{{$txt.Function.ForeignAssignment}}) {
			{{else -}}
			if local.{{$txt.Function.LocalAssignment}} == foreign.{{$txt.Function.ForeignAssignment}} {
			{{end -}}
				local.R.{{$txt.Function.Name}} = foreign
				break
			}
		}
	}

	return nil
}
{{end -}}{{/* range */}}
{{end}}{{/* join table */}}