79 lines
2.7 KiB
Smarty
79 lines
2.7 KiB
Smarty
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{{- if .Table.IsJoinTable -}}
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{{- else}}
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{{- $dot := . -}}
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{{- range .Table.ToManyRelationships -}}
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{{- if .ForeignColumnUnique -}}
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{{- template "relationship_to_one_eager_helper" (textsFromOneToOneRelationship $dot.PkgName $dot.Tables $dot.Table .) -}}
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{{- else -}}
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{{- $rel := textsFromRelationship $dot.Tables $dot.Table . -}}
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{{- $arg := printf "maybe%s" $rel.LocalTable.NameGo -}}
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{{- $slice := printf "%sSlice" $rel.LocalTable.NameGo}}
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{{- $pkeySlice := printf "%sPrimaryKeyColumns" ($dot.Table.Name | singular | camelCase)}}
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// Load{{$rel.Function.Name}} allows an eager lookup of values, cached into the
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// relationships structs of the objects.
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func (r *{{$rel.LocalTable.NameGo}}Relationships) Load{{$rel.Function.Name}}(e boil.Executor, singular bool, {{$arg}} interface{}) error {
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var slice []*{{$rel.LocalTable.NameGo}}
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var object *{{$rel.LocalTable.NameGo}}
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count := 1
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if singular {
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object = {{$arg}}.(*{{$rel.LocalTable.NameGo}})
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} else {
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slice = {{$arg}}.({{$slice}})
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count = len(slice)
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}
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query := fmt.Sprintf(
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`select * from {{.ForeignTable}} where ({{$dot.Table.PKey.Columns | stringMap $dot.StringFuncs.quoteWrap | join ","}}) in (%s)`,
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strmangle.Placeholders(count, 1, {{len $dot.Table.PKey.Columns}}),
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)
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args := make([]interface{}, count*{{len $dot.Table.PKey.Columns}})
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if singular {
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{{range $i, $col := $dot.Table.PKey.Columns -}}
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args[{{$i}}] = object.{{$col | titleCase}}
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{{end -}}
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} else {
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for i, obj := range slice {
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{{range $i, $col := $dot.Table.PKey.Columns -}}
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args[i*{{len $dot.Table.PKey.Columns}}+{{$i}}] = obj.{{$col | titleCase}}
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{{end -}}
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}
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}
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results, err := e.Query(query, args...)
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if err != nil {
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return errors.Wrap(err, "failed to eager load {{.ForeignTable}}")
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}
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var resultSlice []*{{$rel.ForeignTable.NameGo}}
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if err = boil.Bind(results, &resultSlice); err != nil {
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return errors.Wrap(err, "failed to bind eager loaded slice {{.ForeignTable}}")
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}
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if singular {
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object.Relationships = &{{$rel.LocalTable.NameGo}}Relationships{
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{{$rel.Function.Name}}: resultSlice,
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}
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return nil
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}
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for _, foreign := range resultSlice {
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for _, local := range slice {
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if local.{{$rel.Function.LocalAssignment}} == foreign.{{$rel.Function.ForeignAssignment}} {
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if local.Relationships == nil {
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local.Relationships = &{{$rel.LocalTable.NameGo}}Relationships{}
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}
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local.Relationships.{{$rel.Function.Name}} = append(local.Relationships.{{$rel.Function.Name}}, foreign)
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break
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}
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}
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}
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return nil
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}
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{{end -}}{{/* if ForeignColumnUnique */}}
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{{- end -}}{{/* range tomany */}}
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{{- end -}}{{/* if isjointable */}}
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