javascript - Updating JSON Model in SAPUI5/OpenUI5 -

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i have 1 json model, model/salesorder.json,

{   "headerset" : [] }

the initialization,

var salesordermodel = new sap.ui.model.json.jsonmodel("model/salesorder.json"); sap.ui.getcore().setmodel(salesordermodel, "somodel");

on time of creating sales order, creating 1 object have direct keys firstname,latname,etc. , pushing headerset array without keys.

var salesordermodel = this.getview().getmodel("somodel"); var salesorderdata = salesordermodel.getdata(); salesorderdata.headerset.push(soobject); salesordermodel.setdata(salesorderdata);

suppose have 3 objects in model, need update specific object in model? how can that?

master page view,

<list id="listmyorder" growing="true" growingthreshold="10" growingscrolltoload="true" nodatatext="no drafts found" mode="singleselectmaster" items="{path : 'somodel>/headerset' }" select="handlemyorderselect">        <objectlistitem title="{somodel>purchaseordernumber}">             <attributes>                    <objectattribute text="due date : {path : 'somodel>purchaseorderdate' }" />            </attributes>      </objectlistitem> </list>

master page controller,

handlemyorderselect: function (evt) {     this._showdetail(evt.getparameter("listitem")); },  _showdetail: function (item) {     _salesorderidforcart = item.getbindingcontext("somodel").getobject().salesorderid     sap.ui.getcore().geteventbus().publish("nav", "to", {         id: "sodetail",         data: {             source: "myorders",             salesorderid: item.getbindingcontext("somodel").getobject().salesorderid,             context: item.getbindingcontext("somodel")         }     }); }

now, can directly bind other details in detail page using context,

<list showseparators="none" id="tblsummary">   <inputlistitem label="po number">     <label text="{somodel>purchaseordernumber}" design="bold"/>   </inputlistitem>   <inputlistitem label="po date">     <label text="{path : 'somodel>purchaseorderdate'}" design="bold"/>   </inputlistitem> </list>

in detail page have button read context , populate in editable form. , here need update specific edited item in correct object of model. tried adding unique dynamic key each object, @ time binding not work.

almost same thread here http://scn.sap.com/thread/3464458 , http://scn.sap.com/thread/3386927

you have client model (json) , want replace element of headerset array updated version object comes editable form. we're assuming here you're not wanting directly have two-way binding json model, because want input validation first, example.

you have unique key salesorderid can see using when publish onto event bus. let's assume stored in currentsalesorderid , use find right object replace in array new data, in object we'll call updatedorder:

// data model var salesorderdata = salesordermodel.getdata();  // find index of object via salesorderid var index = salesorderdata.headerset     .map(function(order) { return order.salesorderid; })     .indexof(currentsalesorderid);  // replace order in array salesorderdata.headerset.splice(index, 1, updatedorder);

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