Angular Variable/Object undefined after passing to service function












0















I have the following code.



Detail.component.ts



ngOnInit() {
this.route.paramMap.subscribe((params) => {
const itemId = params.get('itemId') //works
console.log(itemId)
if (itemId === 'new') {
this.mode = 'new'
this.item = new Item()
} else {this.shoppingListService.getSingleItem(itemId).then((recItem) => {
this.item = recItem
console.log(JSON.stringify(this.item)); // works
})
}
})
}


The following function is triggerd inside the Detail.component.html



Before calling the servicecall ( updateItem or editItem ) the object is still defined!



     async onSaveClicked() {

console.log("inside onsaveClicked" + JSON.stringify(this.item)); //works

try {
if (this.mode === 'new') {
this.shoppingListService.createItem(this.item)
this.router.navigate(['/list'])

} else if (this.mode === 'edit') {
this.shoppingListService.updateItem(this.item)
console.log("edit: " + JSON.stringify(this.item));



this.mode = 'view'
}
} catch (error) {
console.log(error)
}
}


The following service function is called



Inside this function the passed object ( updateItem ) is undefined.



async updateItem(updateItem: Item) {

console.log("inside update Item " + updateItem.id) //undefined
const result = await this.httpClient.put<any>(`${this.apiEndpoint}/${updateItem.id}`, updateItem).toPromise()
return result;
}


It has to do sth. with the asynchronous behaviour of th httpclient but where exactly is the problem?










share|improve this question

























  • You are logging updateItem.id, not updateItem. Are you sure that updateItem is undefined?

    – JohnnyAW
    Nov 14 '18 at 22:21
















0















I have the following code.



Detail.component.ts



ngOnInit() {
this.route.paramMap.subscribe((params) => {
const itemId = params.get('itemId') //works
console.log(itemId)
if (itemId === 'new') {
this.mode = 'new'
this.item = new Item()
} else {this.shoppingListService.getSingleItem(itemId).then((recItem) => {
this.item = recItem
console.log(JSON.stringify(this.item)); // works
})
}
})
}


The following function is triggerd inside the Detail.component.html



Before calling the servicecall ( updateItem or editItem ) the object is still defined!



     async onSaveClicked() {

console.log("inside onsaveClicked" + JSON.stringify(this.item)); //works

try {
if (this.mode === 'new') {
this.shoppingListService.createItem(this.item)
this.router.navigate(['/list'])

} else if (this.mode === 'edit') {
this.shoppingListService.updateItem(this.item)
console.log("edit: " + JSON.stringify(this.item));



this.mode = 'view'
}
} catch (error) {
console.log(error)
}
}


The following service function is called



Inside this function the passed object ( updateItem ) is undefined.



async updateItem(updateItem: Item) {

console.log("inside update Item " + updateItem.id) //undefined
const result = await this.httpClient.put<any>(`${this.apiEndpoint}/${updateItem.id}`, updateItem).toPromise()
return result;
}


It has to do sth. with the asynchronous behaviour of th httpclient but where exactly is the problem?










share|improve this question

























  • You are logging updateItem.id, not updateItem. Are you sure that updateItem is undefined?

    – JohnnyAW
    Nov 14 '18 at 22:21














0












0








0








I have the following code.



Detail.component.ts



ngOnInit() {
this.route.paramMap.subscribe((params) => {
const itemId = params.get('itemId') //works
console.log(itemId)
if (itemId === 'new') {
this.mode = 'new'
this.item = new Item()
} else {this.shoppingListService.getSingleItem(itemId).then((recItem) => {
this.item = recItem
console.log(JSON.stringify(this.item)); // works
})
}
})
}


The following function is triggerd inside the Detail.component.html



Before calling the servicecall ( updateItem or editItem ) the object is still defined!



     async onSaveClicked() {

console.log("inside onsaveClicked" + JSON.stringify(this.item)); //works

try {
if (this.mode === 'new') {
this.shoppingListService.createItem(this.item)
this.router.navigate(['/list'])

} else if (this.mode === 'edit') {
this.shoppingListService.updateItem(this.item)
console.log("edit: " + JSON.stringify(this.item));



this.mode = 'view'
}
} catch (error) {
console.log(error)
}
}


The following service function is called



Inside this function the passed object ( updateItem ) is undefined.



async updateItem(updateItem: Item) {

console.log("inside update Item " + updateItem.id) //undefined
const result = await this.httpClient.put<any>(`${this.apiEndpoint}/${updateItem.id}`, updateItem).toPromise()
return result;
}


It has to do sth. with the asynchronous behaviour of th httpclient but where exactly is the problem?










share|improve this question
















I have the following code.



Detail.component.ts



ngOnInit() {
this.route.paramMap.subscribe((params) => {
const itemId = params.get('itemId') //works
console.log(itemId)
if (itemId === 'new') {
this.mode = 'new'
this.item = new Item()
} else {this.shoppingListService.getSingleItem(itemId).then((recItem) => {
this.item = recItem
console.log(JSON.stringify(this.item)); // works
})
}
})
}


The following function is triggerd inside the Detail.component.html



Before calling the servicecall ( updateItem or editItem ) the object is still defined!



     async onSaveClicked() {

console.log("inside onsaveClicked" + JSON.stringify(this.item)); //works

try {
if (this.mode === 'new') {
this.shoppingListService.createItem(this.item)
this.router.navigate(['/list'])

} else if (this.mode === 'edit') {
this.shoppingListService.updateItem(this.item)
console.log("edit: " + JSON.stringify(this.item));



this.mode = 'view'
}
} catch (error) {
console.log(error)
}
}


The following service function is called



Inside this function the passed object ( updateItem ) is undefined.



async updateItem(updateItem: Item) {

console.log("inside update Item " + updateItem.id) //undefined
const result = await this.httpClient.put<any>(`${this.apiEndpoint}/${updateItem.id}`, updateItem).toPromise()
return result;
}


It has to do sth. with the asynchronous behaviour of th httpclient but where exactly is the problem?







json angular






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 15 '18 at 0:30









CodingFreak

604725




604725










asked Nov 14 '18 at 22:04









LucasLucas

1




1













  • You are logging updateItem.id, not updateItem. Are you sure that updateItem is undefined?

    – JohnnyAW
    Nov 14 '18 at 22:21



















  • You are logging updateItem.id, not updateItem. Are you sure that updateItem is undefined?

    – JohnnyAW
    Nov 14 '18 at 22:21

















You are logging updateItem.id, not updateItem. Are you sure that updateItem is undefined?

– JohnnyAW
Nov 14 '18 at 22:21





You are logging updateItem.id, not updateItem. Are you sure that updateItem is undefined?

– JohnnyAW
Nov 14 '18 at 22:21












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