Preview post
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parent
80dd345237
commit
5610c19be4
1
go.mod
1
go.mod
@ -4,5 +4,6 @@ go 1.18
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require (
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crawshaw.io/sqlite v0.3.3-0.20220618202545-d1964889ea3c
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github.com/russross/blackfriday/v2 v2.1.0
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gitlab.codemonkeysoftware.net/b/hatmill v0.0.6
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)
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5
go.sum
5
go.sum
@ -1,9 +1,10 @@
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crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797 h1:yDf7ARQc637HoxDho7xjqdvO5ZA2Yb+xzv/fOnnvZzw=
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crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797/go.mod h1:sXBiorCo8c46JlQV3oXPKINnZ8mcqnye1EkVkqsectk=
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crawshaw.io/sqlite v0.3.2 h1:N6IzTjkiw9FItHAa0jp+ZKC6tuLzXqAYIv+ccIWos1I=
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crawshaw.io/sqlite v0.3.2/go.mod h1:igAO5JulrQ1DbdZdtVq48mnZUBAPOeFzer7VhDWNtW4=
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crawshaw.io/sqlite v0.3.3-0.20220618202545-d1964889ea3c h1:wvzox0eLO6CKQAMcOqz7oH3UFqMpMmK7kwmwV+22HIs=
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crawshaw.io/sqlite v0.3.3-0.20220618202545-d1964889ea3c/go.mod h1:igAO5JulrQ1DbdZdtVq48mnZUBAPOeFzer7VhDWNtW4=
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github.com/leanovate/gopter v0.2.4 h1:U4YLBggDFhJdqQsG4Na2zX7joVTky9vHaj/AGEwSuXU=
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github.com/leanovate/gopter v0.2.4/go.mod h1:gNcbPWNEWRe4lm+bycKqxUYoH5uoVje5SkOJ3uoLer8=
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github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
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github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
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gitlab.codemonkeysoftware.net/b/hatmill v0.0.6 h1:5Vs30ORHoujCYRvtbIwrusGBQgPzbKv011xKrTFa5ng=
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gitlab.codemonkeysoftware.net/b/hatmill v0.0.6/go.mod h1:T19ms3BmsEzy5YTS4icMO1oLC53xWhOP9MFeBv4NcFQ=
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59
handler.go
59
handler.go
@ -1,19 +1,22 @@
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package main
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import (
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"log"
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"fmt"
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"net/http"
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"strconv"
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h "gitlab.codemonkeysoftware.net/b/hatmill"
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ha "gitlab.codemonkeysoftware.net/b/hatmill/attribute"
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he "gitlab.codemonkeysoftware.net/b/hatmill/element"
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"github.com/russross/blackfriday/v2"
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)
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const (
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pathRoot = "/"
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pathCreatePost = "/create-post"
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pathDoCreatePost = "/create-post/do"
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pathPreviewPost = "/preview-post"
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)
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type handler struct {
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@ -32,6 +35,7 @@ func NewHandler(store *Store, baseURL string) http.Handler {
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h.mux.HandleFunc(pathRoot, h.getPosts)
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h.mux.HandleFunc(pathCreatePost, h.createPost)
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h.mux.HandleFunc(pathDoCreatePost, h.doCreatePost)
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h.mux.HandleFunc(pathPreviewPost, h.previewPost)
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return h
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}
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@ -49,13 +53,16 @@ func (hnd *handler) getPosts(w http.ResponseWriter, r *http.Request) {
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var rows h.Terms
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for _, post := range result.Posts {
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previewURL := fmt.Sprintf("%s?%s=%d", pathPreviewPost, fieldNamePostID, post.Id)
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rows = append(rows, he.Tr()(
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he.Td()(h.Text(strconv.FormatInt(post.Id, 10))),
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he.Td()(h.Text(post.CreatedAt)),
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he.Td()(h.Text(post.UpdatedAt)),
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he.Td()(h.Text(post.Author)),
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he.Td()(h.Text(post.Title)),
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// he.Td()(h.Text(post.Body)),
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he.Td()(
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he.A(ha.Href(previewURL))(h.Text("Preview")),
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),
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))
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}
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@ -71,6 +78,7 @@ func (hnd *handler) getPosts(w http.ResponseWriter, r *http.Request) {
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he.Th()(h.Text("Updated")),
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he.Th()(h.Text("Author")),
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he.Th()(h.Text("Title")),
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he.Th()(),
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),
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),
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he.Tbody()(
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@ -88,6 +96,40 @@ func (hnd *handler) getPosts(w http.ResponseWriter, r *http.Request) {
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}
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}
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const fieldNamePostID = "post-id"
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func (hnd *handler) previewPost(w http.ResponseWriter, r *http.Request) {
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idStr := r.URL.Query().Get(fieldNamePostID)
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id, err := strconv.ParseInt(idStr, 10, 64)
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if err != nil {
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http.Error(w, "invalid post ID: "+err.Error(), http.StatusBadRequest)
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}
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result, err := hnd.store.GetPost(r.Context(), GetPostQuery{PostID: id})
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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renderedBody := string(blackfriday.Run([]byte(result.Body)))
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html := he.Html()(
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he.Head()(
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he.Title()(h.Text(result.Title)),
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),
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he.Body()(
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he.H1()(h.Text(result.Title)),
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he.H2()(h.Text(result.Author)),
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he.H3()(h.Text(fmt.Sprintf("%s (Updated %s)", result.CreatedAt, result.UpdatedAt))),
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he.Main()(h.RawText(renderedBody)),
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),
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)
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_, err = h.WriteDocument(w, html)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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const (
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fieldNamePostTitle = "post-title"
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fieldNamePostBody = "post-body"
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@ -99,7 +141,11 @@ func (hnd *handler) createPost(w http.ResponseWriter, r *http.Request) {
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he.Head()(),
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he.Body()(
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he.H1()(h.Text("Create post")),
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he.Form(ha.Action(hnd.baseURL+pathDoCreatePost), ha.Method("POST"))(
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he.Form(
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ha.Action(hnd.baseURL+pathDoCreatePost),
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ha.Method("POST"),
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ha.Enctype("multipart/form-data"),
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)(
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he.Label(ha.For(fieldNamePostTitle))(h.Text("Title")),
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he.Input(ha.Name(fieldNamePostTitle)),
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he.Br(),
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@ -107,7 +153,7 @@ func (hnd *handler) createPost(w http.ResponseWriter, r *http.Request) {
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he.Input(ha.Name(fieldNamePostAuthor)),
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he.Br(),
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he.Label(ha.For(fieldNamePostBody))(h.Text("Body")),
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he.Textarea(ha.For(fieldNamePostBody))(),
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he.Textarea(ha.Name(fieldNamePostBody))(),
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he.Br(),
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he.Input(ha.Type("submit")),
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),
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@ -121,7 +167,7 @@ func (hnd *handler) createPost(w http.ResponseWriter, r *http.Request) {
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}
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func (hnd *handler) doCreatePost(w http.ResponseWriter, r *http.Request) {
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err := r.ParseForm()
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err := r.ParseMultipartForm(0)
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if err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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@ -132,11 +178,10 @@ func (hnd *handler) doCreatePost(w http.ResponseWriter, r *http.Request) {
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Author: r.PostForm.Get(fieldNamePostAuthor),
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Body: r.PostForm.Get(fieldNamePostBody),
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}
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result, err := hnd.store.CreatePost(r.Context(), cmd)
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_, err = hnd.store.CreatePost(r.Context(), cmd)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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log.Println("created post", result.PostId)
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http.Redirect(w, r, pathRoot, http.StatusFound)
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}
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47
store.go
47
store.go
@ -116,12 +116,12 @@ func (s *Store) GetPosts(ctx context.Context) (GetPostsResult, error) {
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err := sqlitex.Exec(conn, dbQuery,
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func(stmt *sqlite.Stmt) error {
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result.Posts = append(result.Posts, Post{
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Id: stmt.ColumnInt64(0),
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Author: stmt.ColumnText(1),
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CreatedAt: stmt.ColumnText(2),
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UpdatedAt: stmt.ColumnText(3),
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Title: stmt.ColumnText(4),
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Body: stmt.ColumnText(5),
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Id: stmt.GetInt64("id"),
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Author: stmt.GetText("author"),
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CreatedAt: stmt.GetText("created_at"),
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UpdatedAt: stmt.GetText("updated_at"),
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Title: stmt.GetText("title"),
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Body: stmt.GetText("body"),
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})
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return nil
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})
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@ -161,3 +161,38 @@ func (s *Store) CreatePost(ctx context.Context, cmd CreatePostCommand) (CreatePo
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}, cmd.Title, cmd.Author, cmd.Body)
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return result, err
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}
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type GetPostQuery struct {
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PostID int64
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}
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type GetPostResult struct {
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Post
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}
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func (s *Store) GetPost(ctx context.Context, query GetPostQuery) (GetPostResult, error) {
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conn := s.pool.Get(ctx)
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if conn == nil {
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return GetPostResult{}, ErrNoConn
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}
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defer s.pool.Put(conn)
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const dbQuery = `
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SELECT id, created_at, updated_at, author, title, body
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FROM post
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WHERE id = ?;`
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var result GetPostResult
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err := sqlitex.Exec(conn, dbQuery,
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func(stmt *sqlite.Stmt) error {
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result.Post = Post{
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Id: stmt.GetInt64("id"),
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CreatedAt: stmt.GetText("created_at"),
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UpdatedAt: stmt.GetText("updated_at"),
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Author: stmt.GetText("author"),
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Title: stmt.GetText("title"),
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Body: stmt.GetText("body"),
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}
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return nil
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}, query.PostID)
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return result, err
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}
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