Add dynamic admin panel for managing entities (#108)
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Mike Stefanello
GitHub
parent
60009df0bf
commit
1a6874fd82
47 changed files with 2173 additions and 320 deletions
262
ent/admin/templates/handler.tmpl
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262
ent/admin/templates/handler.tmpl
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{{/* Tell Intellij/GoLand to enable the autocompletion based on the *gen.Graph type. */}}
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{{/* gotype: entgo.io/ent/entc/gen.Graph */}}
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{{ define "admin/handler" }}
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// Code generated by ent, DO NOT EDIT.
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{{- $pkg := base $.Config.Package }}
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package admin
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import (
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"fmt"
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"net/url"
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"strconv"
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"entgo.io/ent/dialect/sql"
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"github.com/labstack/echo/v4"
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"{{ $.Config.Package }}"
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{{- range $n := $.Nodes }}
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"{{ $.Config.Package }}/{{ $n.Package }}"
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{{- end }}
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)
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const dateTimeFormat = "2006-01-02T15:04:05"
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const dateTimeFormatNoSeconds = "2006-01-02T15:04"
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type Handler struct {
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client *{{ $pkg }}.Client
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Config HandlerConfig
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}
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func NewHandler(client *{{ $pkg }}.Client, cfg HandlerConfig) *Handler {
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return &Handler{
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client: client,
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Config: cfg,
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}
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}
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func (h *Handler) Create(ctx echo.Context, entityType string) error {
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switch entityType {
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{{- range $n := $.Nodes }}
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case "{{ $n.Name }}":
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return h.{{ $n.Name }}Create(ctx)
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{{- end }}
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default:
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return fmt.Errorf("unsupported entity type: %s", entityType)
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}
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}
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func (h *Handler) Get(ctx echo.Context, entityType string, id int) (url.Values, error) {
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switch entityType {
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{{- range $n := $.Nodes }}
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case "{{ $n.Name }}":
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return h.{{ $n.Name }}Get(ctx, id)
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{{- end }}
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default:
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return nil, fmt.Errorf("unsupported entity type: %s", entityType)
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}
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}
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func (h *Handler) Delete(ctx echo.Context, entityType string, id int) error {
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switch entityType {
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{{- range $n := $.Nodes }}
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case "{{ $n.Name }}":
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return h.{{ $n.Name }}Delete(ctx, id)
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{{- end }}
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default:
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return fmt.Errorf("unsupported entity type: %s", entityType)
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}
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}
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func (h *Handler) Update(ctx echo.Context, entityType string, id int) error {
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switch entityType {
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{{- range $n := $.Nodes }}
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case "{{ $n.Name }}":
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return h.{{ $n.Name }}Update(ctx, id)
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{{- end }}
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default:
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return fmt.Errorf("unsupported entity type: %s", entityType)
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}
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}
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func (h *Handler) List(ctx echo.Context, entityType string) (*EntityList, error) {
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switch entityType {
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{{- range $n := $.Nodes }}
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case "{{ $n.Name }}":
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return h.{{ $n.Name }}List(ctx)
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{{- end }}
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default:
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return nil, fmt.Errorf("unsupported entity type: %s", entityType)
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}
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}
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{{ range $n := $.Nodes }}
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func (h *Handler) {{ $n.Name }}Create(ctx echo.Context) error {
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var payload {{ $n.Name }}
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if err := h.bind(ctx, &payload); err != nil {
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return err
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}
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op := h.client.{{ $n.Name }}.Create()
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{{- range $f := $n.Fields }}
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{{- if (fieldIsPointer $f) }}
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if payload.{{ fieldName $f.Name }} != nil {
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op.Set{{ fieldName $f.Name }}(*payload.{{ fieldName $f.Name }})
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}
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{{- else }}
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op.Set{{ fieldName $f.Name }}(payload.{{ fieldName $f.Name }})
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{{- end }}
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{{- end }}
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_, err := op.Save(ctx.Request().Context())
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return err
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}
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func (h *Handler) {{ $n.Name }}Update(ctx echo.Context, id int) error {
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entity, err := h.client.{{ $n.Name }}.Get(ctx.Request().Context(), id)
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if err != nil {
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return err
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}
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var payload {{ $n.Name }}
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if err = h.bind(ctx, &payload); err != nil {
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return err
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}
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op := entity.Update()
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{{- range $f := $n.Fields }}
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{{- if not $f.Immutable }}
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{{- if $f.Sensitive }}
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if payload.{{ fieldName $f.Name }} != nil {
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op.Set{{ fieldName $f.Name }}(*payload.{{ fieldName $f.Name }})
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}
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{{- else if $f.Nillable }}
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op.SetNillable{{ fieldName $f.Name }}(payload.{{ fieldName $f.Name }})
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{{- else if $f.Optional }}
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if payload.{{ fieldName $f.Name }} == nil {
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op.Clear{{ fieldName $f.Name }}()
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} else {
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op.Set{{ fieldName $f.Name }}(*payload.{{ fieldName $f.Name }})
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}
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{{- else if (fieldIsPointer $f) }}
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if payload.{{ fieldName $f.Name }} == nil {
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var empty {{ $f.Type }}
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op.Set{{ fieldName $f.Name }}(empty)
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} else {
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op.Set{{ fieldName $f.Name }}(*payload.{{ fieldName $f.Name }})
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}
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{{- else }}
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op.Set{{ fieldName $f.Name }}(payload.{{ fieldName $f.Name }})
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{{- end }}
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{{- end }}
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{{- end }}
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_, err = op.Save(ctx.Request().Context())
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return err
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}
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func (h *Handler) {{ $n.Name }}Delete(ctx echo.Context, id int) error {
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return h.client.{{ $n.Name }}.DeleteOneID(id).
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Exec(ctx.Request().Context())
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}
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func (h *Handler) {{ $n.Name }}List(ctx echo.Context) (*EntityList, error) {
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page, offset := h.getPageAndOffset(ctx)
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res, err := h.client.{{ $n.Name }}.
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Query().
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Limit(h.Config.ItemsPerPage+1).
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Offset(offset).
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Order({{ $n.Package }}.ByID(sql.OrderDesc())).
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All(ctx.Request().Context())
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if err != nil {
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return nil, err
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}
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list := &EntityList{
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Columns: []string{
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{{- range $f := $n.Fields }}
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{{- if not $f.Sensitive }}
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"{{ fieldLabel $f.Name }}",
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{{- end }}
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{{- end }}
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},
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Entities: make([]EntityValues, 0, len(res)),
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Page: page,
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HasNextPage: len(res) > h.Config.ItemsPerPage,
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}
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for i := 0; i <= len(res)-1; i++ {
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list.Entities = append(list.Entities, EntityValues{
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ID: res[i].ID,
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Values: []string{
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{{- range $f := $n.Fields }}
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{{- if not $f.Sensitive }}
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{{- if eq $f.Type.String "string" }}
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res[i].{{ fieldName $f.Name }},
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{{- else if eq $f.Type.String "time.Time" }}
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res[i].{{ fieldName $f.Name }}.Format(h.Config.TimeFormat),
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{{- else }}
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fmt.Sprint(res[i].{{ fieldName $f.Name }}),
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{{- end }}
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{{- end }}
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{{- end }}
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},
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})
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}
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return list, err
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}
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func (h *Handler) {{ $n.Name }}Get(ctx echo.Context, id int) (url.Values, error) {
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entity, err := h.client.{{ $n.Name }}.Get(ctx.Request().Context(), id)
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if err != nil {
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return nil, err
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}
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v := url.Values{}
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{{- range $f := $n.Fields }}
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{{- if and (not $f.Sensitive) (not $f.Immutable) }}
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{{- if eq $f.Type.String "string" }}
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v.Set("{{ $f.Name }}", entity.{{ fieldName $f.Name }})
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{{- else if eq $f.Type.String "time.Time" }}
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v.Set("{{ $f.Name }}", entity.{{ fieldName $f.Name }}.Format(dateTimeFormat))
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{{- else }}
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v.Set("{{ $f.Name }}", fmt.Sprint(entity.{{ fieldName $f.Name }}))
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{{- end }}
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{{- end }}
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{{- end }}
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return v, err
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}
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{{ end }}
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func (h *Handler) getPageAndOffset(ctx echo.Context) (int, int) {
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if page, err := strconv.Atoi(ctx.QueryParam(h.Config.PageQueryKey)); err == nil {
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if page > 1 {
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return page, (page-1) * h.Config.ItemsPerPage
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}
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}
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return 1, 0
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}
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func (h *Handler) bind(ctx echo.Context, entity any) error {
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// Echo requires some pre-processing of form values to avoid problems.
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for k, v := range ctx.Request().Form {
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// Remove empty field values so Echo's bind does not fail when trying to parse things like
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// times, etc.
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if len(v) == 1 && len(v[0]) == 0 {
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delete(ctx.Request().Form, k)
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continue
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}
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// Echo expects datetime values to be in a certain format but that does not align with the datetime-local
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// HTML form element format, so we will attempt to convert it here.
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for _, format := range []string{dateTimeFormatNoSeconds, dateTimeFormat} {
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if t, err := time.Parse(format, v[0]); err == nil {
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ctx.Request().Form[k][0] = t.Format(time.RFC3339)
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break
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}
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}
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}
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return ctx.Bind(entity)
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}
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{{ end }}
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