dd82b8a2ad
- make:admin-controller, make:command and make:migration output, finished: the Posts controller serves models.Post behind acme.blog.access_posts, WinterCMS-style form and list YAML embedded through pact.AdminAssets, blog:publish sets published_at by slug with a bound parameter - the posts route lists published posts only, newest first - Docker tests migrate an ICU pl-PL database, roll back published_at, serve the route and run blog:publish with a published and an opened database - the page gains the admin controller, console command and added-column sections
78 lines
2.4 KiB
Go
78 lines
2.4 KiB
Go
package blog
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import (
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"net/http"
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"strconv"
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"time"
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"git.golem15.com/golem15/summercms/docs/examples/blog/models"
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"git.golem15.com/golem15/summercms/modules/lagoon"
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"git.golem15.com/golem15/summercms/modules/pact"
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"git.golem15.com/golem15/summercms/modules/wire"
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"gorm.io/gorm"
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)
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var _ pact.HasRoutes = (*Plugin)(nil)
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// Routes replaces routes.php.
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func (p *Plugin) Routes(r pact.Router) error {
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r.Get("/api/blog/posts", p.listPosts)
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return nil
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}
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// postJSON is the response shape of one post. It is built field by field,
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// so a column added to the model never leaks into the API.
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type postJSON struct {
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ID uint `json:"id"`
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Title string `json:"title"`
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Slug string `json:"slug"`
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Body string `json:"body"`
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PublishedAt wire.Time `json:"published_at"`
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}
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// listPosts answers GET /api/blog/posts?page=N&per_page=M with one page of
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// published posts, newest first, in the {data, meta} shape of Laravel's
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// paginator. Drafts, whose published_at is NULL, are never listed.
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func (p *Plugin) listPosts(w http.ResponseWriter, r *http.Request) {
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db, ok := p.app.Lookup[*gorm.DB]()
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if !ok {
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wire.WriteJSON(w, http.StatusServiceUnavailable, map[string]string{"message": "database unavailable"})
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return
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}
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page := queryInt(r, "page", 1, 1, 10000)
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perPage := queryInt(r, "per_page", p.app.Config.Int("acme.blog.per_page"), 1, 100)
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q := db.WithContext(r.Context()).Model(&models.Post{}).Where("published_at IS NOT NULL")
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var total int64
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if err := q.Count(&total).Error; err != nil {
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wire.WriteOpaque500(w)
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return
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}
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var posts []models.Post
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if err := q.Order("published_at DESC, id DESC").Offset((page - 1) * perPage).Limit(perPage).Find(&posts).Error; err != nil {
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wire.WriteOpaque500(w)
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return
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}
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rows := make([]postJSON, 0, len(posts))
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for _, post := range posts {
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rows = append(rows, postJSON{
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ID: post.ID,
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Title: post.Title,
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Slug: post.Slug,
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Body: post.Body,
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PublishedAt: wire.Time{Time: post.PublishedAt.UTC().Truncate(time.Second)},
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})
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}
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wire.WriteJSON(w, http.StatusOK, lagoon.Paginate(rows, page, perPage, total))
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}
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// queryInt reads an integer query parameter, falling back to def when it is
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// missing or not a number, and clamps it to [lo, hi].
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func queryInt(r *http.Request, name string, def, lo, hi int) int {
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n, err := strconv.Atoi(r.URL.Query().Get(name))
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if err != nil {
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n = def
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}
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return min(max(n, lo), hi)
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}
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