JSON format considerations for Ruby and Rails

  #虚拟网络拓扑的json数据 def topodata # @vnic = vnic.all#flash.now[:notice] = ' Message sent! ' #flash. Now[:alert] = ' Message sent! ' Simple_json = {nodes: [{name: ' Bob ', Age: ' $ ', awesome: ' true '}, {name: ' Bob ', age:22, awesome:true}],links: [{Name : ' Bob ', Age: ' $ ', awesome: ' true '}, {name: ' Bob ', age:22, awesome:true}]}vnet = Vnet.find (: all,: select = = ' Id,na me,vswitch_id ') VM = Virtualmachine.find (: All,: Select + = ' id,hostname,virtual_machine_container_id ') VMC = Virtualmachinecontainer.find (: All,: Select + = ' id,hostname ') vswitch = Vswitch.find (: all,: select = = ' Id,uuid,vir Tual_machine_container_id,vnet_id,name ') What is the relationship between #vswitch and VMC? Vnic = Vnic.find (: All,: Select + = ' id,virtual_machine_id,vnet_id ') #把所有的name放入nodes数组中 such as: {"name": "Vswitch1", "type"       : "vswitch"}nodes = array.newfor i in 0..vswitch.size-1 do Nodes.push ({name:vswitch[i].name.to_s,group:1 # "vswitch" }) ENDfor I in 0..vm.size-1 do Nodes.push ({name:vm[i].hostname.to_s,group:2 # "VM"}) ENDfor i in 0..vmc.size-1 do Nodes.push ({name:vmc[i].hostname.to_s,group:3 # "VMC"}) end# stores the name and its position in the nodes, in order to Edges find its location such as: id_hash["vm2"] = 4id_hash = Hash.newfor i in 0..nodes.size-1 do id_hash[nodes[i][:name]] = i end#edg The relationship between ES storage edges # First stores vswitch and vm relationships = Vniclinks = Array.newfor i in 0..vnic.size-1 do Links.push ({Source:id_hash[vm[vni C[i].virtual_machine_id-1].hostname],target:id_hash[vswitch[vnet[vnic[i].vnet_id-1].vswitch_id-1].name],value: 10,des: "VSWITCH_TO_VM"}) end# the relationship between VM and VMC = vmfor i in 0..vm.size-1 do Links.push ({source:id_hash[vm[i].h Ostname],target:id_hash[vmc[vm[i].virtual_machine_container_id-1].hostname],value:5,des: "Vm_to_vmc"})  End@alljson = {} @alljson ["nodes"] = nodes@alljson["links"] = Links#flash.now[:alert] = Id_hash[vm[2].hostname]lsjson = {    Nodes: [{name: "Myriel", group:1}, {name: "Napoleon", group:1}, {name: "Mlle.baptistine", Group:2},], Links: [ {source:0,target:1,value:1}, {Source:1,targeT:2,value:8}, {source:2,target:1,value:10},]}respond_to do |format|  format.html Format.json {render json: @alljson} #这里会自动调用to_json end #render Json:lsjson #render JSON: {test: 1} End

　　

Ruby calls in JSON format

First JSON format NOTE:

1, after the nodes to follow:, can not have spaces

2, nodes, name these places cannot be enclosed in quotation marks, otherwise you cannot use Ruby to convert to JSON format.

Simple_json = {nodes: [{name: ' Bob ', Age: ' $ ', awesome: ' true '}, {name: ' Bob ', age:22, awesome:true}],links: [{Name : ' Bob ', Age: ' $ ', awesome: ' true '}, {name: ' Bob ', Age:22, awesome:true}]}

3, (1) can be directly in the Controller's method directly render, you can get JSON format data, such as

  (2) or another method can also, here @alljson is similar to the above Simple_json format data, of course, if directly is the model in the data can be directly used, such as @vnic = Vnic.all

    respond_to do |format|      Format.html      Format.json {render json: @alljson}  #这里会自动调用to_json    end


4, direct access   to the URL Http://localhost:3000/vnet/topodata.json can directly get JSON data

routes inside of the specific resource plus format: :json   It seems that way.

JSON format considerations for Ruby and Rails