When getting directions using "googlemaps.github.io/maps" in Go, the response is an array of maps.Route . Is there a way to turn this response into something readable by javascript's google.maps.DirectionsRenderer(); , the purpose of this is to get the directions with a go server and distribute that data into multiple platforms. Any suggestions about how to transform this data into a visual map are welcome.
Go code:
package main
import (
"log"
"googlemaps.github.io/maps"
"github.com/kr/pretty"
"golang.org/x/net/context"
)
func checkForError(err error) {
if err != nil{
log.Fatal(err)
}
}
func main() {
c, err := maps.NewClient(maps.WithAPIKey("myapikey"))
checkForError(err)
r := &maps.DirectionsRequest{
Origin: "Hollywood, FL",
Destination: "Davie, FL",
}
resp, _, err := c.Directions(context.Background(), r)
checkForError(err)
// render :=
pretty.Println(resp)
}
Output:
[]maps.Route{
{
Summary: "I-95 N and I-595 W",
Legs: {
&maps.Leg{
Steps: {
&maps.Step{
HTMLInstructions: "Head <b>east</b> on <b>Hollywood Blvd</b> toward <b>S Dixie Hwy</b>",
Distance: maps.Distance{HumanReadable:"217 ft", Meters:66},
Duration: 23000000000,
StartLocation: maps.LatLng{Lat:26.0112983, Lng:-80.1494921},
EndLocation: maps.LatLng{Lat:26.0113264, Lng:-80.14883689999999},
Polyline: maps.Polyline{Points:"siw}CheehN?e@Cq@Ai@"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Make a <b>U-turn</b> at <b>S 21st Ave</b>",
Distance: maps.Distance{HumanReadable:"0.6 mi", Meters:886},
Duration: 90000000000,
StartLocation: maps.LatLng{Lat:26.0113264, Lng:-80.14883689999999},
EndLocation: maps.LatLng{Lat:26.0111533, Lng:-80.1575536},
Polyline: maps.Polyline{Points:"yiw}CfaehNU??h@?r@BpAJVDfFHlOBfDDlCB|C@z@H~F"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "At the traffic circle, take the <b>3rd</b> exit and stay on <b>Hollywood Blvd</b>",
Distance: maps.Distance{HumanReadable:"0.6 mi", Meters:937},
Duration: 148000000000,
StartLocation: maps.LatLng{Lat:26.0111533, Lng:-80.1575536},
EndLocation: maps.LatLng{Lat:26.011037, Lng:-80.16587369999999},
Polyline: maps.Polyline{Points:"uhw}CtwfhNGJAB?H?D?J?FAD?DCDCDCDSNUD]N_@XY\\Ub@GRGPIh@Ch@Bd@BJDXN`@DFLVVZ\\T\\P`@JNJHFFHBFBN@F?JBpB?d@@`ABpD@zB?nAB`C@bB@fAAt@AlA"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Turn <b>right</b> to merge onto <b>I-95 N</b> toward <b>W Palm Beach</b>",
Distance: maps.Distance{HumanReadable:"4.4 mi", Meters:7063},
Duration: 277000000000,
StartLocation: maps.LatLng{Lat:26.011037, Lng:-80.16587369999999},
EndLocation: maps.LatLng{Lat:26.0732058, Lng:-80.1671851},
Polyline: maps.Polyline{Points:"_hw}CtkhhNKVCHEJGJCBEBEBIBQDkBB_BJq@DkBR_Ff@_CT[DM@IBGFKJy@FyAFuAB_CD_B@U@cCBE?A?}BByQLqBA{BGuBQeBQyAQo@KoBc@aBa@sA]iHyBa@MoA[wBm@g@K_Ds@cB]aB[eB[qAScBU{BWMCWCsBWg@G}Ks@cHe@aQkA{CUeCOyCSsE[wDW{CSsKu@qAIEA_@COAA?gBM_@Co@E[Ck@CUAs@E]AWA]A]?q@AU?a@?O?Y?kA?s@Bk@@o@Bm@@wEPcKZc@@w@BiAFi@Bq@Dw@Hk@FoBRw@JSD[DmAR}@P}Dt@oCh@yFdAgB\\A@g@HIBA?eCd@cDn@y@Ns@NiB\\_ARu@LaBZyDt@qCh@}Bf@oDx@sBf@}A`@qAZcBb@aBb@qEpA"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Take exit <b>24</b> for <b>Interstate 595</b> toward <b>Port Everglades</b>/<b>Ft Laud-Hlwd</b>/<b>International Airport</b>",
Distance: maps.Distance{HumanReadable:"0.3 mi", Meters:416},
Duration: 17000000000,
StartLocation: maps.LatLng{Lat:26.0732058, Lng:-80.1671851},
EndLocation: maps.LatLng{Lat:26.0768262, Lng:-80.1680758},
Polyline: maps.Polyline{Points:"qlc~C|shhNKIAAAAA?C?E?E?A?MBc@H_@FqB^uAVoAT{@Na@F[Hi@HYFyAXm@L"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Keep <b>left</b> at the fork, follow signs for <b>I-595 W</b>/<b>I-75</b>/<b>Florida's Turnpike</b> and merge onto <b>I-595 W</b>",
Distance: maps.Distance{HumanReadable:"4.4 mi", Meters:7161},
Duration: 255000000000,
StartLocation: maps.LatLng{Lat:26.0768262, Lng:-80.1680758},
EndLocation: maps.LatLng{Lat:26.0947648, Lng:-80.2317655},
Polyline: maps.Polyline{Points:"ecd~CnyhhN[H[D_@Dm@FWBMBU@u@D_@@]@q@@W?]?MAU?[AYAQAe@C_@CWAk@CWAUAUAM?e@?W@Q@WBSBQBI@KBMBUHOFSFWNMHC@A@MHa@ZIFGF]`@IN[f@_@|@IVGT?BEREPCRALAHAF?BAB?FAJ?RAL?F?\\?F?D?N?RDlABn@Bx@@r@@t@@t@AV?h@A`@Ap@Cb@AZ?N?LATCh@CZ?@?@?@@@?@?@@BDFMhBIlAKdBGt@[rEe@zHAFk@vIE`@C`@UlDSbD?FMbECh@A|@C|A?`ACtEDxLD~PBvFDbE@vB?tF?xB@z@ClA?X?@?DG|BGx@IjAGx@Er@MtAMlAMdA[rBQhAUjA[zAWfA[vAYbAc@zAkAtCKXSj@wAhDiC`GiBdE_@|@]x@s@jBs@lBsAnDoAhEw@vCe@xB{@rD[nAsDjS]hBOn@e@~Bc@zBo@rCUpASfAu@fFUjBIj@MhAKp@S|ASzAS`BIv@]nCMbA_@bCQhAAF?FO~@y@zFeAbHyAtJ"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Take exit <b>6</b> toward <b>FL-817</b>/<b>University Dr</b>",
Distance: maps.Distance{HumanReadable:"0.4 mi", Meters:566},
Duration: 20000000000,
StartLocation: maps.LatLng{Lat:26.0947648, Lng:-80.2317655},
EndLocation: maps.LatLng{Lat:26.0963976, Lng:-80.2371076},
Polyline: maps.Polyline{Points:"gsg~CpguhNM\\Ot@qBfKs@tD{@nEKd@S|@Id@Kj@?@ABABMH"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Merge onto <b>FL-84 W</b>",
Distance: maps.Distance{HumanReadable:"0.8 mi", Meters:1365},
Duration: 96000000000,
StartLocation: maps.LatLng{Lat:26.0963976, Lng:-80.2371076},
EndLocation: maps.LatLng{Lat:26.0994367, Lng:-80.25034819999999},
Polyline: maps.Polyline{Points:"o}g~C|hvhNq@~EG`@_@`C_@jCWrBc@dDi@zDyAnJUvAM|@WnBMz@I|@OlAQ|AWrBQ|AKv@SxAWzASpAUnAYpAI`@"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Turn <b>left</b> onto <b>S University Dr</b>",
Distance: maps.Distance{HumanReadable:"1.7 mi", Meters:2808},
Duration: 279000000000,
StartLocation: maps.LatLng{Lat:26.0994367, Lng:-80.25034819999999},
EndLocation: maps.LatLng{Lat:26.07466, Lng:-80.25254079999999},
Polyline: maps.Polyline{Points:"oph~Ct{xhNKf@t@ND@h@Hd@JRBD@bBZfANl@Jx@JtALr@HjBLd@@pBJR@~BDT?z@AhBAt@A`CCfAArAC~@AfAAfBETA~GIlBCvHK|EGbFIr@AvDGR?jB?dC?N?pCDpCLl@FlBRPBl@Fh@HxCf@hGpAn@NzB`@VBx@LtAN~@Ht@FrAJ"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
&maps.Step{
HTMLInstructions: "Make a <b>U-turn</b><div style=\"font-size:0.9em\">Destination will be on the left</div>",
Distance: maps.Distance{HumanReadable:"0.2 mi", Meters:242},
Duration: 38000000000,
StartLocation: maps.LatLng{Lat:26.07466, Lng:-80.25254079999999},
EndLocation: maps.LatLng{Lat:26.0765145, Lng:-80.25211829999999},
Polyline: maps.Polyline{Points:"suc~CjiyhN@i@g@EwAIC?sAMYCm@Iy@M[E@T"},
Steps: nil,
TransitDetails: (*maps.TransitDetails)(nil),
TravelMode: "DRIVING",
},
},
Distance: maps.Distance{HumanReadable:"13.4 mi", Meters:21510},
Duration: 1243000000000,
DurationInTraffic: 0,
ArrivalTime: time.Time{},
DepartureTime: time.Time{},
StartLocation: maps.LatLng{Lat:26.0112983, Lng:-80.1494921},
EndLocation: maps.LatLng{Lat:26.0765145, Lng:-80.25211829999999},
StartAddress: "Hollywood, FL, USA",
EndAddress: "Davie, FL, USA",
},
},
WaypointOrder: {},
OverviewPolyline: maps.Polyline{Points:"siw}CheehNCwAAi@U??|ABpAJVNtVHtHDxEH~FGJAL?PEXGJSNUD]N_@XY\\Ub@Od@Ih@Ch@Fp@Tz@R^t@p@\\P`@JXRJPDVDdFH~NBjDCbC]x@YNQDkBBqCPgNvAWDSRsCNuEH_GF_CByQLqBA{BGuBQ_Ec@_Do@uD_AkIgCgEiAgE_AeEy@wDo@_Fm@yC_@eM{@eZqBoSuAqZsBsE[sCMeCEaB?{EHmTp@}ETkGp@{Dp@oTbEmMdCaIzAkI~AmH`BgKhCsHtBMKMAy@L{M`C}Dx@aCVyBLeCByAEoBKoBI}ABgAL_AX}@b@{@n@e@h@e@v@i@tAGXQfACTEfBDvBJrEAxCG`CInBBHDFMhBUrDkAlQkAhQSjDQlFIrLJx^HzLBbPChBGbCQdCMlB[bDi@xDg@tCs@bDu@zCc@zAkAtC_@dAkJnTyEbMgC`JaBlH[nAsDjSm@xCoC`NiAnH_@vCaAtHiAlJs@|EiAzH_DxS]rAeD|PeBxIOt@MHq@~Eg@bDeC`RuCtRy@dHiAbJk@lDo@`DUhAz@PhBZjDj@fBVhCVpCNdCLtCD|IIbHIjOUlX_@jEGpF?`DDpCLl@F~BVvAPxCf@hGpAjDp@pAPtCXhCR@i@g@E{AImBQgBW[E@T"},
Bounds: maps.LatLngBounds{
NorthEast: maps.LatLng{Lat:26.0994988, Lng:-80.14883689999999},
SouthWest: maps.LatLng{Lat:26.0110222, Lng:-80.25254079999999},
},
Copyrights: "Map data ©2016 Google",
Warnings: {},
},
}
That JSON output is a DirectionsResult object, which is passed in through the DirectionsRendererOptions directly to the DirectionsRenderer() constructor you're asking about.
If you're trying to marshal it in to Go you can use the same structs to marshal it back out for consumers that are looking for a DirectionsResult object.