Passing array of parameters through get in rails

问题:

How do I pass array of parameters through Get method in rails? Currently my URL loocs like this:

http://localhost:3000/jobs/1017/editing_job_suites/1017/editing_member_jobs/new?ids[]=1025&ids[]=1027

How can I pass the array with Get method but avoid ?ids[]=1025&ids[]=1027 part.

Request is being sent with javascript window.open method. Is there any workaround to send not ajax Post request.

回答1:

No, GET can only put variables on the url itself. If you want the URL to be shorter, you have to POST. That's a limitation feature of HTTP, not Rails.

回答2:

You should stick to using a GET request if you are not changing the state of anything, and all you want to to access a read only value.

To send an array of ids to rails in a GET request simply name your variable with square brackets at the end.

//angular snippet

$http.(method:'GET',
  ...
  params: {'channel_id':2, 'product_ids[]': productIds}  
  //where productIds is an array of integers
  ...
)

Do not concatenate your ids as a comma separated list, just pass them individually redundantly. So in the url it would look something like this:

?channel_id=2&product_ids[]=6900&product_ids[]=6901

url encoded it will actually be more like this:

?channel_id=2&product_ids%5B%5D=6900&product_ids%5B%5D=6901

Rails will separate this back out for you.

Parameters: {"channel_id"=>"2", "product_ids"=>["6900", "6901"]}

回答3:

I recently wanted to do this and found a workaround that is a little less complex, and so has some complexity limitations but may also be easier to implement. Can't speak to security, etc.

If you pass your array values as a string with a delimiter, e.g.

http://example.com/controller?job_ids=2342,2354,25245

Then you can take the result and parse it back to what you want:

job_ids = params[:job_ids].split(',')

Then do whatever:

    job_ids.each do |job_id|
      job = Job.find(job_id.to_i)
    end

etc

回答4:

@Homan answer is valid for using an external client (e.g curl or angular). Inside Rails test cases though, you should not use []. Here's an example:

get get_test_cases_url(**path_params), params: {case_ids: ["NON-9450", "NON-12345", "NON-9361"]}

This is using new format where get_test_cases is name of route and you pass to the method all params needed to construct the URL path. Query params are a separate hash.

FYI if I use [] like case_ids[], then instead of ["NON-9450", "NON-12345", "NON-9361"] I'm getting it parsed to [["NON-9450"], ["NON-12345"], ["NON-9361"]]