Receiving posted JSON with Sinatra
source link: https://willschenk.com/articles/2015/receiving-posted-json-with-sinatra/
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Will Schenk
Receiving posted JSON with Sinatra
small tricks to make things easier
Published July 27, 2015 #ruby #sinatra #toys
Here’s some simple code to accept a JSON string posted to a Sinatra end point rather than a form. I switched from using jQueries $.ajax method to superagent as part of my exploration of the node javascript package universe, and it has a different way of serializing nest objects when posting as a form. Specifically, it doesn’t.
I needed something that could do both.
Code to use form encoding or JSON blob
This first tries and loads the parameters using the normal form encoding methods. If it doesn’t find the path parameter, it attempts to parse the body’s payload, found in request.body.read, using JSON.parse:
post '/post' do
payload = params
payload = JSON.parse(request.body.read).symbolize_keys unless params[:path]
logger.info "Saving #{payload[:path]} with #{payload[:meta]}"
file = load_app.sitemap.find_resource_by_path payload[:path]
end
Javascript
The coffeescript that calls this is:
request.post "/api/post"
.set('Content-Type', 'application/json')
.send path: @state.path, meta: @state.metadata, body: @state.markdown
.end (err, response) =>
if response.ok
@state.saving = false
@state.dirty = false
@trigger @state
In this case, @state.metadata is also a complex object, and posting it as JSON ensures that it’s marshalled correctly.
Not too complicated.
See also
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Adding search to a middleman blog
slightly simplier than google
We’re going to build a simple, niave search for middleman blogs. We’re going to build a search index at build time, and then use that index to perform the search itself on the client side. Building the index When you typed in something in google, it doesn’t then go and hit every page on the internet to check to see if there’s a match. It doesn’t even look at every page that it has squirreled away somewhere in the googleplex.
make your own screen saver
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Made in Brooklyn, NY.
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