this is the structure of the documents of my database mongoDB collection (mongosails4.case)

collectionRecord.json

{
    "_id" : ObjectId("55a907962109d0860b71aff1"),
    "appointment" : {
        "appointment_time" : null,
        "customer_requested_appointment_time" : null,
        "label" : "",
        "service_slot" : ""
    },
    "asset" : {
        "in_service_date" : null,
        "fleet_info" : "WALKJ     WILKC",
        "asset_description" : "",
        "description" : "",
        "identifier" : "650190",
        "engine" : "----",
        "hours" : 0,
        "make" : "Freightliner",
        "model" : "Cascadia",
        "year" : 2015,
        "serial" : "FSFN2753",
        "unit" : "650190",
        "vin" : "3AKJGLD53FSFN2753",
        "location" : {
            "street" : "",
            "city" : "",
            "state" : "",
            "zip" : "",
            "country" : ""
        },
        "mileage" : 0,
        "mileage_units" : "miles",
        "pm" : "current"
    },
    "asset_arrived" : null,
    "attachments" : 1,
    "authorization_number" : "440889",
    "case_status" : "",
    "case_url" : "http://dsmppg.decisiv.net/shared/estimates/1305340",
    "closed_at" : null,
    "complaint" : {
        "complaint_description" : "ONGUARD FAULT\r\nLEAK @ DOME\r\nAUTH# 440889",
        "vmrs" : {
            "system" : "000",
            "assembly" : "000",
            "component" : "000",
            "position" : "",
            "identifier" : ""
        }
    },
    "completion_time" : {
        "estimated_completion_time" : ISODate("1970-01-01T00:00:00.000Z"),
        "actual_completion_time" : null,
        "customer_requested_completion_time" : null
    },
    "correction" : {
        "correction_description" : "ONGUARD FAULT\r\nLEAK @ DOME\r\nAUTH# 440889",
        "vmrs" : {
            "system" : "",
            "assembly" : "",
            "component" : "",
            "position" : "",
            "work_accomplished" : ""
        }
    },
    "created_at" : null,
    "created_by" : "Jennifer Linder",
    "dealer" : {
        "identifier" : "57",
        "description" : "Springfield Freightliner North",
        "location" : {
            "identifier" : "DCV-SPFN",
            "description" : "Springfield Freightliner North",
            "street" : "3759 E Evergreen",
            "city" : "Springfield",
            "state" : "MO",
            "country" : "US",
            "zip" : "65803"
        },
        "person" : {
            "identifier" : "Lara Shotwell"
        },
        "url" : ""
    },
    "description" : {
        "mfr_function_group" : "",
        "priority" : "High",
        "severity" : 0,
        "program_type" : ""
    },
    "estimate" : {
        "estimate_url" : "http://dsmppg.decisiv.net/shared/estimates/1305340/print_redirect",
        "description" : "",
        "estimate" : 0,
        "identifier" : "",
        "url" : "http://dsmppg.decisiv.net/shared/estimates/1305340",
        "core" : 0,
        "core_exempt" : false,
        "freight" : 0,
        "hazwaste" : 0,
        "labor" : 0,
        "parts" : 0,
        "shop" : 0,
        "tax" : 0,
        "tax_exempt" : false,
        "total" : 0
    },
    "fleet" : {
        "identifier" : "PRIMEFLEET",
        "description" : "Prime Inc.",
        "location" : {
            "identifier" : "10362",
            "description" : "Prime Inc.",
            "street" : "2740 N. Mayfair",
            "city" : "Springfield",
            "state" : "MO",
            "country" : "US",
            "zip" : "65803"
        },
        "person" : {
            "identifier" : ""
        }
    },
    "followup_time" : {
        "fleet_followup" : "",
        "provider_followup" : ""
    },
    "identifier" : 1.30534e+06,
    "invoice" : {
        "case_id" : "",
        "description" : "",
        "identifier" : "",
        "total" : 0,
        "core" : 0,
        "core_exempt" : false,
        "freight" : 0,
        "hazwaste" : 0,
        "labor" : 0,
        "parts" : 0,
        "shop" : 0,
        "tax" : 0,
        "tax_exempt" : false,
        "estimate" : 0
    },
    "notes" : {
        "notes_url" : "http://dsmppg.decisiv.net/shared/estimates/1305340/notes_redirect",
        "number_ext_notes" : 9,
        "last_note" : ISODate("2015-04-23T16:04:09.000Z"),
        "last_note_from" : "Prime Inc.",
        "year" : 0
    },
    "operations" : {
        "labor_hours" : "",
        "ops_status" : "Not Started",
        "ops_started_on" : "",
        "ops_completed_on" : ""
    },
    "po_number" : "repairs complete",
    "repair_order" : {
        "case_id" : "",
        "description" : "",
        "identifier" : "66270",
        "total" : 0,
        "core" : 0,
        "core_exempt" : false,
        "freight" : 0,
        "hazwaste" : 0,
        "labor" : 0,
        "parts" : 0,
        "shop" : 0,
        "tax" : 0,
        "tax_exempt" : false,
        "estimate" : 0
    },
    "stage_fleet_status" : "Open",
    "stage_as_label" : "Closed",
    "stage" : 12,
    "sub_stage_as_label" : "Complete",
    "sub_stage" : 3,
    "stage_description" : "Complete (gone)",
    "stage_updated_at" : null,
    "stage_updated_by" : "JOHN MORTON",
    "tags" : "",
    "tag_number" : "",
    "total_downtime" : "",
    "updated_at" : null,
    "service_request_time" : ISODate("2015-04-02T14:11:51.000Z"),
    "source_id" : 277,
    "fleet_status_as_label" : "Open",
    "fleet_status" : 9,
    "return_to_operations_completed_on" : null,
    "createdAt" : ISODate("2015-07-17T13:48:06.142Z"),
    "updatedAt" : ISODate("2015-07-20T15:28:57.407Z")
}