sqlboiler/templates/06_relationship_to_one_eager.tpl

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{{- define "relationship_to_one_eager_helper" -}}
{{- $arg := printf "maybe%s" .LocalTable.NameGo -}}
{{- $slice := printf "%sSlice" .LocalTable.NameGo -}}
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// Load{{.Function.Name}} allows an eager lookup of values, cached into the
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// loaded structs of the objects.
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func (r *{{.LocalTable.NameGo}}R) Load{{.Function.Name}}(e boil.Executor, singular bool, {{$arg}} interface{}) error {
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var slice []*{{.LocalTable.NameGo}}
var object *{{.LocalTable.NameGo}}
count := 1
if singular {
object = {{$arg}}.(*{{.LocalTable.NameGo}})
} else {
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slice = *{{$arg}}.(*{{$slice}})
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count = len(slice)
}
args := make([]interface{}, count)
if singular {
args[0] = object.{{.LocalTable.ColumnNameGo}}
} else {
for i, obj := range slice {
args[i] = obj.{{.LocalTable.ColumnNameGo}}
}
}
query := fmt.Sprintf(
`select * from "{{.ForeignKey.ForeignTable}}" where "{{.ForeignKey.ForeignColumn}}" in (%s)`,
strmangle.Placeholders(count, 1, 1),
)
if boil.DebugMode {
fmt.Fprintf(boil.DebugWriter, "%s\n%v\n", query, args)
}
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results, err := e.Query(query, args...)
if err != nil {
return errors.Wrap(err, "failed to eager load {{.ForeignTable.NameGo}}")
}
defer results.Close()
var resultSlice []*{{.ForeignTable.NameGo}}
if err = boil.BindFast(results, &resultSlice, {{.ForeignKey.Table | singular | camelCase}}TitleCases); err != nil {
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return errors.Wrap(err, "failed to bind eager loaded slice {{.ForeignTable}}")
}
if singular && len(resultSlice) != 0 {
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if object.R == nil {
object.R = &{{.LocalTable.NameGo}}R{}
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}
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object.R.{{.Function.Name}} = resultSlice[0]
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return nil
}
for _, foreign := range resultSlice {
for _, local := range slice {
if local.{{.Function.LocalAssignment}} == foreign.{{.Function.ForeignAssignment}} {
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if local.R == nil {
local.R = &{{.LocalTable.NameGo}}R{}
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}
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local.R.{{.Function.Name}} = foreign
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break
}
}
}
return nil
}
{{end -}}
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{{- if .Table.IsJoinTable -}}
{{- else -}}
{{- $dot := . -}}
{{- range .Table.FKeys -}}
{{- $rel := textsFromForeignKey $dot.PkgName $dot.Tables $dot.Table . -}}
{{- template "relationship_to_one_eager_helper" $rel -}}
{{- end -}}
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{{- end -}}