@@ -29,7 +29,8 @@ defmodule Helper.Converter.Article do
2929with { :ok , body_map } <- to_editor_map ( body ) ,
3030{ :ok , body_html } <- EditorToHTML . to_html ( body_map ) ,
3131{ :ok , body_encode } <- Jason . encode ( body_map ) do
32- % { body: body_encode , body_html: body_html , body_map: body_map } |> done
32+ % { body: body_encode , body_html: body_html , body_map: body_map }
33+ |> done
3334end
3435end
3536
@@ -39,18 +40,47 @@ defmodule Helper.Converter.Article do
3940 parse digest by concat all the paragraph blocks
4041 """
4142def parse_digest ( % { "blocks" => blocks } = body_map ) when is_map ( body_map ) do
42- paragraph_blocks = Enum . filter ( blocks , & ( & 1 [ "type" ] == "paragraph" ) )
43+ digest_blocks = Enum . filter ( blocks , & ( & 1 [ "type" ] == "paragraph" ) )
4344
44- Enum . reduce ( paragraph_blocks , "" , fn block , acc ->
45+ Enum . reduce ( digest_blocks , "" , fn block , acc ->
4546text = block [ "data" ] [ "text" ] |> HtmlSanitizer . strip_all_tags ( )
4647acc <> text <> " "
4748end )
4849|> String . trim_trailing ( )
50+ |> parse_other_blocks_ifneed ( blocks )
4951|> String . slice ( 0 , @ article_digest_length )
5052|> done
5153end
5254
53- def parse_digest ( _ ) , do: { :ok , "unknow digest" }
55+ def parse_digest ( _ ) , do: { :ok , "无可预览摘要" }
56+
57+ # 如果文章里没有段落，可以使用列表内容（如果有的话）作为预览内容
58+ defp parse_other_blocks_ifneed ( "" , blocks ) do
59+ list_blocks = Enum . filter ( blocks , & ( & 1 [ "type" ] == "list" ) )
60+
61+ digest =
62+ case list_blocks do
63+ [ ] ->
64+ "无可预览摘要"
65+
66+ _ ->
67+ digest_block = list_blocks |> List . first ( )
68+
69+ Enum . reduce ( digest_block [ "data" ] [ "items" ] , "" , fn item , acc ->
70+ text = item [ "text" ]
71+ acc <> text <> " "
72+ end )
73+ |> String . trim_trailing ( )
74+ |> HtmlSanitizer . strip_all_tags ( )
75+ |> String . slice ( 0 , @ article_digest_length )
76+ end
77+
78+ digest
79+ end
80+
81+ defp parse_other_blocks_ifneed ( paragraph_digest , _blocks ) do
82+ paragraph_digest
83+ end
5484
5585@ doc """
5686 decode article body string to editor map and assign id for each block