Mercurial Hosting > luan
changeset 596:6bb0c83116e9
add blog sample app
| author | Franklin Schmidt <fschmidt@gmail.com> |
|---|---|
| date | Tue, 15 Sep 2015 21:30:33 -0600 |
| parents | 8370c4009cce |
| children | cb6c628de583 |
| files | .hgignore blog/read_me.txt blog/serve.sh blog/src/edit.luan blog/src/index.html.luan blog/src/lib/Db.luan blog/src/lib/Db_mod.luan blog/src/lib/Post.luan blog/src/new.luan blog/src/site.css |
| diffstat | 10 files changed, 217 insertions(+), 0 deletions(-) [+] |
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--- a/.hgignore Mon Sep 14 14:20:52 2015 -0600 +++ b/.hgignore Tue Sep 15 21:30:33 2015 -0600 @@ -9,3 +9,4 @@ *.bck *.n go +local
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/read_me.txt Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,1 @@ +This is just a demo website not meant for real use. It is just to demonstrate how to implement a simple website in Luan.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/serve.sh Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,1 @@ +luan luan:http/serve file:src 2>&1 | tee err
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/edit.luan Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,43 @@ +local Luan = require "luan:Luan" +local error = Luan.error +local String = require "luan:String" +local to_number = String.to_number or error() +local Io = require "luan:Io" +local Http = require "luan:http/Http" +local Post = require "site:/lib/Post" + + +return function() + local post_id = to_number(Http.request.parameter.post) or error() + local post = Post.get_by_id(post_id) or error() + if Http.request.parameter.save ~= nil then + post.subject = Http.request.parameter.subject + post.content = Http.request.parameter.content + post.save() + Http.response.send_redirect("/#p"..post.id) + return + end + + Io.stdout = Http.response.text_writer() +%> +<html> + <head> + <style> + @import "/site.css"; + </style> + </head> + <body> + <h1>Make New Post</h1> + + <form method=post> + <p>Subject: <input name=subject size=50 type=text value="<%= post.subject %>"></p> + <p><textarea name=content rows=20 cols=90><%= post.content %></textarea></p> + <p> + <input type=submit name=save value=Submit> + </p> + </form> + + </body> +</html> +<% +end
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/index.html.luan Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,39 @@ +local Luan = require "luan:Luan" +local error = Luan.error +local ipairs = Luan.ipairs or error() +local Time = require "luan:Time" +local Io = require "luan:Io" +local Http = require "luan:http/Http" +local Post = require "site:/lib/Post" + + +return function() + Io.stdout = Http.response.text_writer() +%> +<html> + <head> + <style> + @import "/site.css"; + </style> + </head> + <body> + <h1>Demo Blog App</h1> + + <div><a href="new">Make New Post</a></div> + + <% + for _, post in ipairs(Post.get_all()) do + %> + <a name="p<%= post.id %>"> + <h2><%= post.subject %></h2> + <p><%= Time.format(post.date) %> - <a href="edit?post=<%= post.id %>">Edit</a></p> + <pre><%= post.content %></pre> + <hr> + <% + end + %> + + </body> +</html> +<% +end
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/lib/Db.luan Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,1 @@ +return require "site:/lib/Db_mod".new_db()
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/lib/Db_mod.luan Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,19 @@ +local Lucene = require "luan:lucene/Lucene" +local Io = require "luan:Io" + + +local M = {} + +M.lucene_dir = "site:/private/local/lucene" + +function M.new_db() + local dir = Io.uri(M.lucene_dir).to_string() + local db = Lucene.index(dir) + +-- this is how you index a field +-- db.indexed_fields.post_date = Lucene.type.long + + return db +end + +return M
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/lib/Post.luan Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,55 @@ +local Luan = require "luan:Luan" +local error = Luan.error +local ipairs = Luan.ipairs or error() +local assert_string = Luan.assert_string or error() +local Time = require "luan:Time" +local now = Time.now or error() +local Db = require "site:/lib/Db" + + +local M = {} + +local function from_doc(doc) + return M.new { + id = doc.id; + subject = doc.subject; + content = doc.content; + date = doc.date; + } +end + +function M.new(this) + assert_string(this.subject) + assert_string(this.content) + this.date = this.date or now() + + function this.save() + local doc = { + type = "post"; + id = this.id; + subject = this.subject; + content = this.content; + date = this.date; + } + Db.save(doc) + this.id = doc.id + end + + return this +end + +function M.get_by_id(id) + local doc = Db.get_document("id:"..id) + return doc and from_doc(doc) +end + +function M.get_all() + local docs = Db.search("type:post",1,1000,"id desc") + local posts = {} + for _, doc in ipairs(docs) do + posts[#posts+1] = from_doc(doc) + end + return posts +end + +return M
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/new.luan Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,40 @@ +local Luan = require "luan:Luan" +local error = Luan.error +local Io = require "luan:Io" +local Http = require "luan:http/Http" +local Post = require "site:/lib/Post" + + +return function() + local subject = Http.request.parameter.subject + local content = Http.request.parameter.content + if Http.request.parameter.save ~= nil then + local post = Post.new{ subject=subject, content=content } + post.save() + Http.response.send_redirect("/") + return + end + + Io.stdout = Http.response.text_writer() +%> +<html> + <head> + <style> + @import "/site.css"; + </style> + </head> + <body> + <h1>Make New Post</h1> + + <form method=post> + <p>Subject: <input name=subject size=50 type=text></p> + <p><textarea name=content rows=20 cols=90></textarea></p> + <p> + <input type=submit name=save value=Submit> + </p> + </form> + + </body> +</html> +<% +end
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/blog/src/site.css Tue Sep 15 21:30:33 2015 -0600 @@ -0,0 +1,17 @@ + +body { + font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; + font-size: 14px; + margin: 1em 5%; +} + +a[href] { + text-decoration: inherit; + color: #337ab7; +} +a[href]:visited { + color: #034a87; +} +a[href]:hover { + text-decoration: underline; +}