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{{ `shards version #{__DIR__}`.chomp.stringify }}`shards version #{__DIR__}`.chomp
\`` method and the regular`` method is that the macro one is executed at compile time and evaluated to an AST Node (in this case a string literal) which remains constant after compile time. The one that's not in macro-land will run at runtime. For an example explaining what I mean, run the following commands and observe the results:echo test text > test-file
echo 'puts `cat test-file`
puts {{`cat test-file`.stringify}}' > test-backtick.cr
crystal build -o test-backtick test-backtick.cr
./test-backtick
echo some different text > test-file
./test-backtick
Hi there, I'm new to Crystal though I'm a long-time Ruby enthusiast. I'm trying to re-write my blog using Crystal + Kemal and I ran into a possible routing issues. I'm trying to render (or redirect) to a local html file which is not in public. Here's the code:
get "/posts/:year-:month-:day/:slug" do |env|
year = env.params.url["year"]
month = env.params.url["month"]
day = env.params.url["day"]
slug = env.params.url["slug"]
path = "./posts/#{year}-#{month}-#{day}/#{slug}.html"
env.redirect path
end An example url would be something like: /posts/2017-09-21/some-slug. Though I'm getting a 500 error: Missing hash key: "year". I'm wondering if this is because the dash is messing up the route parser?
send_file instead of env.redirect:get "/posts/:date/:slug" do |env|
date = env.params.url["date"]
slug = env.params.url["slug"]
path = "./posts/#{date}/#{slug}.html"
send_file env, path
end
env.session.object.delete("save") for example
Hi, I have a question. How do I get array parameters in a get request
for example:id[]=1&id[]=2
the way I wanted to get the arrayenv.params.query["id[]"].as(Array)
I tried to get it this way but I take it as a unique string value and not as the array I expected to get. I was guided by what the guide says: "Be sure to access the param name exactly how it was passed. (i.e. env.params.body["likes[]"])" but I don't know why I was wrong because it didn't work
get "/blog/:category/entry/" do |env|
category = env.params.url["category"]
id = nil
title = body = ""
# render
end
get "/blog/:category/entry/:id" do |env|
category = env.params.url["category"]
id = env.params.url["id"]
title, body = # get from DB
# render same page
end
