sqlboiler/templates/06_relationship_to_one_eager.tpl

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{{- define "relationship_to_one_eager_helper" -}}
{{- $dot := .Dot -}}{{/* .Dot holds the root templateData struct, passed in through preserveDot */}}
{{- $varNameSingular := $dot.Table.Name | singular | camelCase -}}
{{- with .Rel -}}
{{- $arg := printf "maybe%s" .LocalTable.NameGo -}}
{{- $slice := printf "%sSlice" .LocalTable.NameGo -}}
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// Load{{.Function.Name}} allows an eager lookup of values, cached into the
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// loaded structs of the objects.
func ({{$varNameSingular}}L) Load{{.Function.Name}}(e boil.Executor, singular bool, {{$arg}} interface{}) error {
var slice []*{{.LocalTable.NameGo}}
var object *{{.LocalTable.NameGo}}
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count := 1
if singular {
object = {{$arg}}.(*{{.LocalTable.NameGo}})
} else {
slice = *{{$arg}}.(*{{$slice}})
count = len(slice)
}
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args := make([]interface{}, count)
if singular {
args[0] = object.{{.LocalTable.ColumnNameGo}}
} else {
for i, obj := range slice {
args[i] = obj.{{.LocalTable.ColumnNameGo}}
}
}
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query := fmt.Sprintf(
"select * from {{.ForeignKey.ForeignTable | $dot.SchemaTable}} where {{.ForeignKey.ForeignColumn | $dot.Quotes}} in (%s)",
strmangle.Placeholders(dialect.IndexPlaceholders, count, 1, 1),
)
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if boil.DebugMode {
fmt.Fprintf(boil.DebugWriter, "%s\n%v\n", query, args)
}
results, err := e.Query(query, args...)
if err != nil {
return errors.Wrap(err, "failed to eager load {{.ForeignTable.NameGo}}")
}
defer results.Close()
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var resultSlice []*{{.ForeignTable.NameGo}}
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if err = queries.Bind(results, &resultSlice); err != nil {
return errors.Wrap(err, "failed to bind eager loaded slice {{.ForeignTable.NameGo}}")
}
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{{if not $dot.NoHooks -}}
if len({{.ForeignTable.Name | singular | camelCase}}AfterSelectHooks) != 0 {
for _, obj := range resultSlice {
if err := obj.doAfterSelectHooks(e); err != nil {
return err
}
}
}
{{- end}}
if singular && len(resultSlice) != 0 {
if object.R == nil {
object.R = &{{$varNameSingular}}R{}
}
object.R.{{.Function.Name}} = resultSlice[0]
return nil
}
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for _, foreign := range resultSlice {
for _, local := range slice {
if local.{{.Function.LocalAssignment}} == foreign.{{.Function.ForeignAssignment}} {
if local.R == nil {
local.R = &{{$varNameSingular}}R{}
}
local.R.{{.Function.Name}} = foreign
break
}
}
}
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return nil
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}
{{- end -}}{{- /* end with */ -}}
{{end -}}{{- /* end define */ -}}
{{- /* Begin execution of template for one-to-one eager load */ -}}
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{{- if .Table.IsJoinTable -}}
{{- else -}}
{{- $dot := . -}}
{{- range .Table.FKeys -}}
{{- $txt := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table . -}}
{{- template "relationship_to_one_eager_helper" (preserveDot $dot $txt) -}}
{{- end -}}
{{end}}