Rails response_to格式化HTML Json不适用于params

Question

I am creating a Rails-Angularjs RESTful app. where a rails controller index action needs to generate a json for the Angularjs Front-end. The index action receives a parameter, which must be used as filter in the query to the DB. If I don't use the parameters everything works angular shows results. But, if I add the received parameter to the query, it doesn't work.

This the action index using the parameter in the query: def index @project_id = params[:project_id] @tickets = PrintingTicket.where(project_id: @project_id)

    respond_to do |format|
      format.html
      format.json { render json: @tickets }
    end
 end

This is the action index not using the parameter to filter info in the query:

 def index
    @project_id = params[:project_id] 
    @tickets = PrintingTicket.all

    respond_to do |format|
      format.html
      format.json { render json: @tickets }
    end
 end

I noticed that the index action is executed twice, once for HTML and one for JSON. Project_id has valid information the first run, ad is 'nil' the second run.

By observing the console, on both cases, it shows the parameter at the beginning Parameters: {"project_id"=>"5982a8799f911d0318054997"} but, in the case where I use the parameter, the parameter has 'nil' at the end, as you can see on the log:

    Started GET "/projects/5982a8799f911d0318054997/tickets" for ::1 at 2017-11-18 21:50:34 -0800
Processing by TicketsController#index as HTML
  Parameters: {"project_id"=>"5982a8799f911d0318054997"}
  Rendered tickets/index.html.erb within layouts/application (0.1ms)
MONGODB | localhost:27017 | ticketmongo_development.find | STARTED | {"find"=>"users", "filter"=>{"_id"=>BSON::ObjectId('595f189d9f911d0518244d9b')}, "limit"=>1, "singleBatch"=>true}
MONGODB | localhost:27017 | ticketmongo_development.find | SUCCEEDED | 0.0019340000000000002s
MONGODB | localhost:27017 | ticketmongo_development.find | STARTED | {"find"=>"companies", "filter"=>{"_id"=>BSON::ObjectId('596059589f911d047bd195bf')}}
MONGODB | localhost:27017 | ticketmongo_development.find | SUCCEEDED | 0.001964s
  Rendered companies/_company.html.erb (3.5ms)
  Rendered projects/_projects.html.erb (0.5ms)
  Rendered layouts/_topmenusignin.html.erb (7.1ms)
Completed 200 OK in 120ms (Views: 106.0ms)


Started GET "/tickets/index/tickets.json" for ::1 at 2017-11-18 21:50:34 -0800
Processing by TicketsController#index as JSON
  Parameters: {"id"=>"tickets"}
MONGODB | localhost:27017 | ticketmongo_development.find | STARTED | {"find"=>"printing_tickets", "filter"=>{"project_id"=>nil}}
MONGODB | localhost:27017 | ticketmongo_development.find | SUCCEEDED | 0.0016179999999999999s
Completed 200 OK in 4ms (Views: 3.1ms)

Any help will be well received !!

Answer 1

GET "/projects/5982a8799f911d0318054997/tickets"

as you can see from your rake routes the route for the tickets#index action is /projects/:project_id/tickets and you are passing parameters[:project_id] as 5982a8799f911d0318054997 . If you are passing other parameters, they will be in the request.body

GET "/tickets/index/tickets.json"

this route does not make sense. You need to check your router, as it is taking parameters[:id] = 'tickets ', maybe you set your routing incorrectly.

It could look like this right now

GET '/tickets/index/:id'

and when you perform GET request to url /tickets/index/tickets.json , it will take your last input tickets as the id params