I need to send an array of objects from Flex to a Ruby Web service, but sending them as parameters is not getting through since they seen to come through as Objects instead of readable data.
Sending it as raw XML or JSON didn't work either so the last resort might be to send everything in a HTTP query. However, I'm not sure how to do this since the array contains objects, all of which have 4 or 5 properties, and I don't know what the right format would be. Help, anyone?
you should look for an AMF implementation of rails
AMF - actionscript messaging format.
this way, you pass objects from the server to the client and the other way around, this means that when you send a list to the server, the list is of server object.
for example, if you have a Product object on the server and a Product object on the client you simply send an Arraycollection of Product to the server and iterate with rails
#products.each do |p|
p will be Product.
there was an implementation of rails here http://blog.rubyamf.org/ although I don't know if it's still maintained.
I also found a good presentation of how to use it here:
http://www.slideshare.net/railsconf/integrating-flex-and-rails-with-ruby-amf
Related
Because I am rewriting a legacy app, I cannot change what the clients either send or accept. I have to accept and return JSON, HTML, and an in-house XML-like serialization.
They do, fortunately set headers that describe what they are sending and what they accept.
So right now, what I do is have a decoder module and an encoder module with methods that are basically if/elif/else chains. When a route is ready to process/return something, I call the decoder/encoder module with the python object and the header field, which returns the formatted object as a string and the route processes the result or returns Response().
I am wondering if there is a more Quart native way of doing this.
I'm also trying to figure out how to make this work with Quart-Schema. I see from the docs that one can do app.json_encoder = <class> and I suppose I could sub in a different processor there, but it seems application global, there's no way to set it based on what the client sends. Optimally, it would be great if I could just pass the results of a dynamically chosen parser to Quart-Schema and let it do it's thing on python objects.
Thoughts and suggestions welcome. Thanks!
You can write your own decorator like the quart-schema #validation_headers(). Inside the decorator, check the header for the Content-Type, parse it, and pass the parsed object to the func(...).
I am developing single page application using HotTowel.
My question is that, When I am writing a Breeze query with string parameter whose length is greater than 1600 characters then action is not invoking.
Please let me know the reason.
Thanks in advance.
as stated in:
What is the maximum length of a URL in different browsers?
there is a limit for the length of urls
check parametrized queries as a possible workaround:
How to properly send action parameter along with query in BreezeJs
The answer from #fops is correct. Using .withParameters, you may be able to create some methods on your server that allow you to use some shorthand on the client instead of very large queries.
If your queries are really big, and even .withParameters blows up your URL, you may need to use POST instead of GET.
Breeze doesn't support POST for queries directly, but there's an (unsupported) add-on in Breeze Labs called breeze.ajaxpost.js that will let you use POST for .withParameters queries.
I've made a twitter api request (GET trends/place API) and the result is just like this:
[{"trends":[{"name":"#BabyIsStaying","url":"http:\/\/twitter.com\/search?q=%23BabyIsStaying","promoted_content":null,"query":"%23BabyIsStaying","events":null},{"name":"#AkTakipBa\u015fl\u0131yor","url":"http:\/\/twitter.com\/search?q=%23AkTakipBa%C5%9Fl%C4%B1yor","promoted_content":null,"query":"%23AkTakipBa%C5%9Fl%C4%B1yor","events":null},{"name":"#\u00c7apulcuTakip","url":"http:\/\/twitter.com\/search?q=%23%C3%87apulcuTakip","promoted_content":null,"query":"%23%C3%87apulcuTakip","events":null},{"name":"#SadeceKar\u015f\u0131l\u0131kl\u0131Takiple\u015fme","url":"http:\/\/twitter.com\/search?q=%23SadeceKar%C5%9F%C4%B1l%C4%B1kl%C4%B1Takiple%C5%9Fme","promoted_content":null,"query":"%23SadeceKar%C5%9F%C4%B1l%C4%B1kl%C4%B1Takiple%C5%9Fme","events":null},{"name":"#soysuzek\u015fis\u00f6zl\u00fck","url":"http:\/\/twitter.com\/search?q=%23soysuzek%C5%9Fis%C3%B6zl%C3%BCk","promoted_content":null,"query":"%23soysuzek%C5%9Fis%C3%B6zl%C3%BCk","events":null},{"name":"B\u00fcy\u00fck FENERBAH\u00c7E Taraftarlar\u0131Takiple\u015fiyor","url":"http:\/\/twitter.com\/search?q=%22B%C3%BCy%C3%BCk+FENERBAH%C3%87E+Taraftarlar%C4%B1Takiple%C5%9Fiyor%22","promoted_content":null,"query":"%22B%C3%BCy%C3%BCk+FENERBAH%C3%87E+Taraftarlar%C4%B1Takiple%C5%9Fiyor%22","events":null},{"name":"Sar\u0131K\u0131rm\u0131z\u0131Aile UnfollowsuzTakiple\u015fiyor","url":"http:\/\/twitter.com\/search?q=%22Sar%C4%B1K%C4%B1rm%C4%B1z%C4%B1Aile+UnfollowsuzTakiple%C5%9Fiyor%22","promoted_content":null,"query":"%22Sar%C4%B1K%C4%B1rm%C4%B1z%C4%B1Aile+UnfollowsuzTakiple%C5%9Fiyor%22","events":null},{"name":"D\u00fcnyadaTeksinSen GALATASARAY\u0131m","url":"http:\/\/twitter.com\/search?q=%22D%C3%BCnyadaTeksinSen+GALATASARAY%C4%B1m%22","promoted_content":null,"query":"%22D%C3%BCnyadaTeksinSen+GALATASARAY%C4%B1m%22","events":null},{"name":"D\u00fcnyan\u0131n TekHarikas\u0131s\u0131n FENERBAH\u00c7EM","url":"http:\/\/twitter.com\/search?q=%22D%C3%BCnyan%C4%B1n+TekHarikas%C4%B1s%C4%B1n+FENERBAH%C3%87EM%22","promoted_content":null,"query":"%22D%C3%BCnyan%C4%B1n+TekHarikas%C4%B1s%C4%B1n+FENERBAH%C3%87EM%22","events":null},{"name":"MustafaKemalin\u0130zindeyiz \u00c7\u00fcnk\u00fcFenerbah\u00e7eliyiz","url":"http:\/\/twitter.com\/search?q=%22MustafaKemalin%C4%B0zindeyiz+%C3%87%C3%BCnk%C3%BCFenerbah%C3%A7eliyiz%22","promoted_content":null,"query":"%22MustafaKemalin%C4%B0zindeyiz+%C3%87%C3%BCnk%C3%BCFenerbah%C3%A7eliyiz%22","events":null}],"as_of":"2013-07-20T10:51:45Z","created_at":"2013-07-20T10:45:24Z","locations":[{"name":"Turkey","woeid":23424969}]}]
My question is how to turn this array string into html. No proper php experience at all.
The response you are getting is JSON.
You used to be able to get response in XML, RSS and more, but now the only response type you will receive is JSON.
PHP has multiple methods for dealing with JSON. To encode data, you would use json_encode(). However, you want to decode it, so you want to be doing the following:
var_dump(json_decode($yourData));
This will dump the data to the browser so you can see what you have to work with.
You can iterate around this data using a foreach() loop.
Remember, assuming you json_decode() your results into $yourData:
To access array properties, use: $yourData['propertyName']
To access object properties, use: $yourData->propertyName
you can feed that into json_decode() function
you will get an array that you can manage as you want.
I'm working on an API that accepts data from remote clients, some of which where the key in an HTTP POST almost functions as an array. In english what this means is say I have a resource on my server called "class". A class in this sense, is the type a student sits in and a teacher educates in. When the user submits an HTTP POST to create a new class for their application, a lot of the key value pairs look like:
student_name: Bob Smith
student_name: Jane Smith
student_name: Chris Smith
What's the best way to handle this on both the client side (let's say the client is cURL or ActiveResource, whatever..) and what's a decent way of handling this on the server-side if my server is a Ruby on Rails app? Need a way to allow for multiple keys with the same name and without any namespace clashing or loss of data.
My requirement has to be that the POST data is urlencoded key/value pairs.
There are two ways to handle this, and it's going to depend on your client-side architecture how you go about doing it, as the HTTP standards do not make the situation cut and dry.
Traditionally, HTTP requests would simply use the same key for repeated values, and leave it up to the client architecture to realize what was going on. For instance, you could have a post request with the following values:
student_name=Bob+Smith&student_name=Jane+Smith&student_name=Chris+Smith
When the receiving architecture got that string, it would have to realize that there were multiple keys of student_name and act accordingly. It's usually implemented so that if you have a single key, a scalar value is created, and if you have multiples of the same key, the values are put into an array.
Modern client-side architectures such as PHP and Rails use a different syntax however. Any key you want to be read in as an array gets square brackets appended, like this:
student_name[]=Bob+Smith&student_name[]=Jane+Smith&student_name[]=Chris+Smith
The receiving architecture will create an array structure named "student_name" without the brackets. The square bracket syntax solves the problem of not being able to send an array with only a single value, which could not be handled with the "traditional" method.
Because you're using Rails, the square bracket syntax would be the way to go. If you think you might switch server-side architectures or want to distribute your code, you could look into more agnostic methods, such as JSON-encoding the string being sent, which adds overhead, but might be useful if it's a situation you expect to have to handle.
There's a great post on all this in the context of JQuery Ajax parameters here.
Send your data as XML or JSON and parse whatever you need out of it.
I have to pass parameters between two rails apps. In one side (sender) I have an array of hashes. I have a code like the following to send the data:
http = Net::HTTP.new('localhost', '3030')
result = http.post('/processar_lotes', my_array_of_hashes)
Some questions
Is there any (kind of) serialize or something like this that I can pass to the other app?
At the other side, how can I de-serialize the information?
Is there a limit to the size of what I pass as a parameter?
To answer your questions:
There are many ways to 'serialize' the data. You can use your own custom format, or use a standard one. For example, you can try to use the Rails to_xml method, or the to_json method. You can also use Ruby's Marshal object.
Depending on your choice, this might be from_json, from_xml, Marshal.load, or your own custom reader.
Normally, this is unlimited for HTTP posts, but depending on your server configuration, it could be less.
Probably not the answer you're looking for, but I'd use XML. This would make your application much more flexible than using language-specific serialization.
It shouldn't be too hard to convert the array to XML and back.
EDIT: You might wanna check out ROXML and XML::Mapping.