nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

get relationship id from layer

DeepikaJain

Dear All

I am having multiple mapservices loaded in my map and I am working with query related records. Multiple layers have related data so the relationship id which i need to pass varied from layer to layer. I am unable to find the relationshipID of the layer dynamically. please let me know how to get it. I am using ArcGIS Javascript API 3.5

Thanks
Deepika

Vind meer berichten getagd met

Accepted answers

VinayBansal

In order to get the relation id you need to follow this :
1. Get the layer info from your map service and store its response in a variable
//Create a class called LayerInfo and add this function to it.

getLayerInfo: function () {         var requestHandle = esri.request({             "url": this.mapServiceUrl + "/layers",             "content": {                 "f": "json"             },             "callbackParamName": "callback"         });         return requestHandle.then(this.requestSucceeded, this.requestFailed);     }, requestSucceeded: function (response, io) {                 return response;     }     ,     requestFailed: function (response) {                 return null;     }

2. Once you get the response process the response to store layerwise info in a global variable.

processResponseFromDynamicLayer: function (response) {        var layerListByName = new Array();             if (response != null && response.layers != null) {                 for (var iCnt = 0; iCnt < response.layers.length; iCnt++) {                     if (response.layers[iCnt].type != "Group Layer" && response.layers[iCnt].type != "Annotation SubLayer") {                         if (layerListByName[response.layers[iCnt].name] == null) {                             layerListByName[response.layers[iCnt].name] = response.layers[iCnt];                             if (layerListByName.length == undefined)                                 layerListByName.length = 1;                             else                                 layerListByName.length = layerListByName.length + 1;                         }                     }                 }             }                  if (response != null && response.tables != null) {             for (var iCnt = 0; iCnt < response.tables.length; iCnt++) {                 if (layerListByName[response.tables[iCnt].name] == null) {                     layerListByName[response.tables[iCnt].name] = response.tables[iCnt];                     if (layerListByName.length == undefined)                         layerListByName.length = 1;                     else                         layerListByName.length = layerListByName.length + 1;                 }             }         } return layerListByName ;     }

3. From that variable get the layer relation ship Id

getLayerRelationShipId: function (layerName, relationName,layerListByName ) {         if (layerListByName != null && layerListByName.length > 0) {             if (layerListByName[layerName] != null) {                 var layerInfo = layerListByName[layerName];                 if (layerInfo.relationships != null && layerInfo.relationships.length > 0) {                     var relationsShips = layerInfo.relationships;                     for (iRelCnt = 0; iRelCnt < relationsShips.length; iRelCnt++) {                         if (relationsShips[iRelCnt].name == relationName)                             return relationsShips[iRelCnt].id;                     }                 }             }             else                 return -1;         }         return -1;     }

You can create a single class from all these functions and store the values in properties

All comments

DeepikaJain

Hi Vinay

Thanks for the reply. But m using ajax call to get the response. this is how it is.
var _url = _requesturl + "/queryRelatedRecords";
    $.ajax({
        crossDomain: true,
        url: _url,
        type: "POST",
        dataType: "json",
        data: _c95,
        // async: false,
        jsonCallback: "callback",

        success: function (response) {
         designRelatdRecds(response,relatedLayername);

        },
        error: function (e) {
            alert(e.message + e.responseText);
        }
    });

how shud i combine the multiple responses together

Thanks a lot Vinay for the help.Got it resolved 🙂

DeepikaJain

Hi Vinay

Thanks for the reply. But m using ajax call to get the response. this is how it is.
var _url = _requesturl + "/queryRelatedRecords";
    $.ajax({
        crossDomain: true,
        url: _url,
        type: "POST",
        dataType: "json",
        data: _c95,
        // async: false,
        jsonCallback: "callback",

        success: function (response) {
         designRelatdRecds(response,relatedLayername);

        },
        error: function (e) {
            alert(e.message + e.responseText);
        }
    });

how shud i combine the multiple responses together

VinayBansal

Since queryRelatedFeatures returns a defferred object you can do something like this

https://developers.arcgis.com/en/javascript/jssamples/query_deferred_list.html

Combine the deferred objects to generate single output

DeepikaJain

Hi Vinay

Thanks a lot. I get the Relationship Id now. But thres one more problem. Some of my layers have multiple relationship Ids, if I pass the multiple relationship ids to the relationship query, it gives error. Please let me know how should I go about it.

Thanks
Deepika

VinayBansal

getLayerInfo: function () {         var requestHandle = esri.request({             "url": this.mapServiceUrl + "/layers",             "content": {                 "f": "json"             },             "callbackParamName": "callback"         });         return requestHandle.then(this.requestSucceeded, this.requestFailed);     }, requestSucceeded: function (response, io) {                 return response;     }     ,     requestFailed: function (response) {                 return null;     }

2. Once you get the response process the response to store layerwise info in a global variable.

processResponseFromDynamicLayer: function (response) {        var layerListByName = new Array();             if (response != null && response.layers != null) {                 for (var iCnt = 0; iCnt < response.layers.length; iCnt++) {                     if (response.layers[iCnt].type != "Group Layer" && response.layers[iCnt].type != "Annotation SubLayer") {                         if (layerListByName[response.layers[iCnt].name] == null) {                             layerListByName[response.layers[iCnt].name] = response.layers[iCnt];                             if (layerListByName.length == undefined)                                 layerListByName.length = 1;                             else                                 layerListByName.length = layerListByName.length + 1;                         }                     }                 }             }                  if (response != null && response.tables != null) {             for (var iCnt = 0; iCnt < response.tables.length; iCnt++) {                 if (layerListByName[response.tables[iCnt].name] == null) {                     layerListByName[response.tables[iCnt].name] = response.tables[iCnt];                     if (layerListByName.length == undefined)                         layerListByName.length = 1;                     else                         layerListByName.length = layerListByName.length + 1;                 }             }         } return layerListByName ;     }

3. From that variable get the layer relation ship Id

getLayerRelationShipId: function (layerName, relationName,layerListByName ) {         if (layerListByName != null && layerListByName.length > 0) {             if (layerListByName[layerName] != null) {                 var layerInfo = layerListByName[layerName];                 if (layerInfo.relationships != null && layerInfo.relationships.length > 0) {                     var relationsShips = layerInfo.relationships;                     for (iRelCnt = 0; iRelCnt < relationsShips.length; iRelCnt++) {                         if (relationsShips[iRelCnt].name == relationName)                             return relationsShips[iRelCnt].id;                     }                 }             }             else                 return -1;         }         return -1;     }

You can create a single class from all these functions and store the values in properties

Doe mee aan het gesprek

Aangemelde leden kunnen berichten plaatsen, updates volgen en meer. Nieuw hier? Registreer een gratis account.

Snelle Links

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.