Difficulty reaching the POST service in Angular 6 TypeScript

I am encountering an issue with calling the post service in my TypeScript code. My scenario involves receiving user input through a form, storing this data in an array, and displaying it in a table. Subsequently, when I attempt to save the data by clicking a button that triggers a service call, the service fails without any visible error message. Interestingly, I have additional services being called on the same button click which are functioning correctly, but the service for handling arrays is not working as expected.

Service.ts

insertAddresses(formData: SettingsAddressesModel) {
    return this.http.post(this.apiURL + "/SettingAddress/SaveAddress", formData);
  }

Component.ts

insertAddressList(compIDforAddress){
    for(var i = 0; i < this.childSettingAddressComponent.SettingsAddressesList.length; i++){
      this.childSettingAddressComponent.SettingsAddressesList[i].ElementID = compIDforAddress;
      //this.addressService.insertAddresses(this.childSettingAddressComponent.SettingsAddressesList[i]);
      console.log('address data', this.childSettingAddressComponent.SettingsAddressesList[i]);
    }
    this.addressService.insertAddressListArray(this.childSettingAddressComponent.SettingsAddressesList);
    console.log('Address Elment ID:', compIDforAddress);
  }

Answer №1

Make sure to subscribe to any asynchronous calls, otherwise they will not run.

To fix this issue, update your code in component.ts as shown below:


this.addressService.insertAddressListArray(this.childSettingAddressComponent.SettingsAddressesList)
.subscribe((result)=>{
    // The result will contain the response from the service
    console.log('Address Element ID:', compIDforAddress); 
});

Answer №2

Make sure to subscribe and handle errors when using the post method, as it can fail silently if not properly managed.

this.addressService.insertAddressListArray(this.childSettingAddressComponent.SettingsAddressesList)
.subscribe((result)=>{    
    // result will contain the response from service  
     console.log('Address Element ID:', compIDforAddress); 
    },
     (error)=>{
     console.log("Error Occurred: "+error);
     }
);

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