Passing Odata object to create an entity set - sapui5

Question

I am trying to call a Odata service (crequestSet) which will create an article in MDG system.
I need to pass few parameters from the ui5 input fields and some should be hard coded values.
I have created a request.json file under models folder:
{
"CR_MARA": {
"Matk": "",
"Mtart": "HAWA",
"Attyp": "01",
"Meins": "EA"
},
"CR_MAW1": {
"Wladg": "0001",
"Wbkla": "3100"
},
"CR_MARM": {
"Meinh": "EA",
"Umrez": "1",
"Umren": "1"
},
"CR_MAKT": {
"Spras": "EN",
"Maktg": "Art 101 A",
"Maktx": "Art 101 A"
},
"CR_STEU": {
"Aland": "DE",
"Tatyp": "TTX1",
"Taxkm": "0"
}
}
Now i am trying to call the service /createrequest by using the model.
Create ('EnitityEset',oData {Success:"",Failure:""}) of the odata model in sapui5.
For a simple JSON model like:
{
"store": "",
"merchCat": "",
}
i can simple do:
var oData = {
Store: oLocal.getProperty("/store"),
MerchCat: oLocal.getProperty("/merchCat")
}
and then call the create method:
oModel.create("/crequestSet", oData, {
success: this._fnSuccess.bind(this),
error: this._fnFailed.bind(this)
})
But how do i pass the complex json object:
{
"CR_MARA": {
"Matk": "",
"Mtart": "HAWA",
"Attyp": "01",
"Meins": "EA"
},
"CR_MAW1": {
"Wladg": "0001",
"Wbkla": "3100"
},}
to the oModel.Create ?
I tried to do var oData = JSONModel.Stringyfy() to convert into a string,but it's not working and giving a error while service call.
The metadata structure of the crequest service:
-<EntityType sap:content-version="1" Name="crequest">
-<Key>
<PropertyRef Name="Matnr"/>
</Key>
<Property Name="ReasonForRequest" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="60" Nullable="false" Type="Edm.String"/>
<Property Name="Matnr" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="40" Nullable="false" Type="Edm.String" sap:label="Material"/>
<Property Name="CrDescription" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="60" Nullable="false" Type="Edm.String"/>
<Property Name="CrequestType" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="8" Nullable="false" Type="Edm.String"/>
<Property Name="CrequestId" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="12" Nullable="false" Type="Edm.String"/>
<Property Name="Matkl" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="9" Nullable="false" Type="Edm.String"/>
<Property Name="RefMatnr" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="40" Nullable="false" Type="Edm.String" sap:label="Material"/>
<Property Name="Reason" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="2" Nullable="false" Type="Edm.String"/>
<Property Name="Message" sap:filterable="false" sap:sortable="false" sap:updatable="false" sap:creatable="false" sap:unicode="false" MaxLength="220" Nullable="false" Type="Edm.String" sap:label="Message Text"/>
<NavigationProperty Name="CR_ATTACHMASTER" ToRole="ToRole_CR_ATTACHMASTER" FromRole="FromRole_CR_ATTACHMASTER" Relationship="UGIOD02_RFM_SRV.CR_ATTACHMASTER"/>
<NavigationProperty Name="CR_UOM" ToRole="ToRole_CR_UOM" FromRole="FromRole_CR_UOM" Relationship="UGIOD02_RFM_SRV.CR_UOM"/>
<NavigationProperty Name="CR_MARA" ToRole="ToRole_CR_MARA" FromRole="FromRole_CR_MARA" Relationship="UGIOD02_RFM_SRV.CR_MARA"/>
<NavigationProperty Name="CR_MARC" ToRole="ToRole_CR_MARC" FromRole="FromRole_CR_MARC" Relationship="UGIOD02_RFM_SRV.CR_MARC"/>
<NavigationProperty Name="CR_MAKT" ToRole="ToRole_CR_MAKT" FromRole="FromRole_CR_MAKT" Relationship="UGIOD02_RFM_SRV.CR_MAKT"/>
<NavigationProperty Name="CR_MARD" ToRole="ToRole_CR_MARD" FromRole="FromRole_CR_MARD" Relationship="UGIOD02_RFM_SRV.CR_MARD"/>
<NavigationProperty Name="CR_MARM" ToRole="ToRole_CR_MARM" FromRole="FromRole_CR_MARM" Relationship="UGIOD02_RFM_SRV.CR_MARM"/>
<NavigationProperty Name="CR_MVKE" ToRole="ToRole_CR_MVKE" FromRole="FromRole_CR_MVKE" Relationship="UGIOD02_RFM_SRV.CR_MVKE"/>
<NavigationProperty Name="CR_MAW1" ToRole="ToRole_CR_MAW1" FromRole="FromRole_CR_MAW1" Relationship="UGIOD02_RFM_SRV.CR_MAW1"/>
<NavigationProperty Name="CR_STEU" ToRole="ToRole_CR_STEU" FromRole="FromRole_CR_STEU" Relationship="UGIOD02_RFM_SRV.CR_STEU"/>
<NavigationProperty Name="CR_SAUSPW" ToRole="ToRole_CR_SAUSPW" FromRole="FromRole_CR_SAUSPW" Relationship="UGIOD02_RFM_SRV.CR_SAUSPW"/>
<NavigationProperty Name="CR_SVARKY" ToRole="ToRole_CR_SVARKY" FromRole="FromRole_CR_SVARKY" Relationship="UGIOD02_RFM_SRV.CR_SVARKY"/>
<NavigationProperty Name="CR_PURCHINFO" ToRole="ToRole_CR_PURCHINFO" FromRole="FromRole_CR_PURCHINFO" Relationship="UGIOD02_RFM_SRV.CR_PURCHINFO"/>
<NavigationProperty Name="CR_WLK2" ToRole="ToRole_CR_WLK2" FromRole="FromRole_CR_WLK2" Relationship="UGIOD02_RFM_SRV.CR_WLK2"/>
<NavigationProperty Name="CR_BOM" ToRole="ToRole_CR_BOM" FromRole="FromRole_CR_BOM" Relationship="UGIOD02_RFM_SRV.CR_BOM"/>
<NavigationProperty Name="CR_MBEW" ToRole="ToRole_CR_MBEW" FromRole="FromRole_CR_MBEW" Relationship="UGIOD02_RFM_SRV.CR_MBEW"/>
<NavigationProperty Name="CR_CHARACP" ToRole="ToRole_CR_CHARACP" FromRole="FromRole_CR_CHARACP" Relationship="UGIOD02_RFM_SRV.CR_CHARACP"/>
<NavigationProperty Name="CR_MAMT" ToRole="ToRole_CR_MAMT" FromRole="FromRole_CR_MAMT" Relationship="UGIOD02_RFM_SRV.CR_MAMT"/>
<NavigationProperty Name="CR_CLASSGEN" ToRole="ToRole_cr_classgen" FromRole="FromRole_cr_classgen" Relationship="UGIOD02_RFM_SRV.cr_classgen"/>
<NavigationProperty Name="CR_MESSAGE" ToRole="ToRole_Messages" FromRole="FromRole_Messages" Relationship="UGIOD02_RFM_SRV.Messages"/>
<NavigationProperty Name="CR_CLASSASGN" ToRole="ToRole_Classasgen_As" FromRole="FromRole_Classasgen_As" Relationship="UGIOD02_RFM_SRV.Classasgen_As"/>
<NavigationProperty Name="CR_VALUATION" ToRole="ToRole_Valuation_As" FromRole="FromRole_Valuation_As" Relationship="UGIOD02_RFM_SRV.Valuation_As"/>
<NavigationProperty Name="CR_SEASON" ToRole="ToRole_Season_det" FromRole="FromRole_Season_det" Relationship="UGIOD02_RFM_SRV.Season_det"/>
</EntityType>

Answer 1

sap.ui.model.odata.v2.ODataModel, method created accepts three parameters, being the second (oDatain the API Reference) the deep object you need to pass.
var oData = {
ReasonForRequest: "X",
Matnr: "Y",
RefMatnr: "Z",
CR_MARA: {
Matk: "",
Mtart: "HAWA",
Attyp: "01",
Meins: "EA"
},
CR_MAW1: [
{
Wladg: "0001",
Wbkla: "3100"
}
]
}
oModel.create("/EntitySet", oData, { } );
Please note some important concepts:
CR_MARA and CR_MAW1 are your NavigationProperties in the metadata.
As you did only provice your service metadata partially, it's not
possible to know what are the properties for each entity. The
associations in your metadata (not available in the metadata)
contain information about cardinalitty.
So if CR_MARA has
cardinalitty 1..1 it should be a deep object inside oData whilst
CR_MAW1 has cardinalitty 1..* it should be a array of objects
inside oData.
Moreover, it's semantically wrong to name EntitySets with "operation specific" names, like "CreateEntitySet" or "DeleteEntitySet" as you can (and tipically will) implement many operations in the same entity like Query, Read and Create at the same time.

Answer 2

The oData model (I assume you use v2) takes care of the structure when you use oModel.createEntry() or oModel.create(). You can just put the whole object into the second properties argument. I forked a northwind example project northwind-sapui5 to create a working example.