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React Native AsyncStorage not overwriting data

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0

0

I am trying to make an app and I have a few objects in an array which I use AsyncStorage for. I need to change one element of an object but if I try changing it, it doesn't keep those changes.

My code:

save = async () => {
this.state.dataSource.notes = this.state.text;
try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');

this.setModalVisible(!this.state.modalVisible);

The this.state.text stores the value of the text input.

The this.state.dataSource stores the array of objects.

Both of these work like they should.

The array looks like this:

Array = [
item = 
 id: 'id',
 name: 'name',
 brand: 'brand',
 inname: 'inname',
 chosenWeekDay: 'week day',
 androidDate: 'date for android',
 chosenAndroidTime: 'time for android',
 notes: 'notes in a string',
 ]

arrays react-native object mobile asyncstorage

share|improve this question

edited Mar 22 at 8:33

ASliceOfBread

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  How are you selecting the specific item in AsyncStorage you want to change? For example, are you using the id?
  
  – Dan
  Mar 22 at 9:01
  

  
  
  
  

add a comment | 

0

0

I am trying to make an app and I have a few objects in an array which I use AsyncStorage for. I need to change one element of an object but if I try changing it, it doesn't keep those changes.

My code:

save = async () => {
this.state.dataSource.notes = this.state.text;
try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');

this.setModalVisible(!this.state.modalVisible);

The this.state.text stores the value of the text input.

The this.state.dataSource stores the array of objects.

Both of these work like they should.

The array looks like this:

Array = [
item = 
 id: 'id',
 name: 'name',
 brand: 'brand',
 inname: 'inname',
 chosenWeekDay: 'week day',
 androidDate: 'date for android',
 chosenAndroidTime: 'time for android',
 notes: 'notes in a string',
 ]

arrays react-native object mobile asyncstorage

share|improve this question

edited Mar 22 at 8:33

ASliceOfBread

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  How are you selecting the specific item in AsyncStorage you want to change? For example, are you using the id?
  
  – Dan
  Mar 22 at 9:01
  

  
  
  
  

add a comment | 

I am trying to make an app and I have a few objects in an array which I use AsyncStorage for. I need to change one element of an object but if I try changing it, it doesn't keep those changes.

My code:

save = async () => {
this.state.dataSource.notes = this.state.text;
try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');

this.setModalVisible(!this.state.modalVisible);

The this.state.text stores the value of the text input.

The this.state.dataSource stores the array of objects.

Both of these work like they should.

The array looks like this:

Array = [
item = 
 id: 'id',
 name: 'name',
 brand: 'brand',
 inname: 'inname',
 chosenWeekDay: 'week day',
 androidDate: 'date for android',
 chosenAndroidTime: 'time for android',
 notes: 'notes in a string',
 ]

arrays react-native object mobile asyncstorage

share|improve this question

edited Mar 22 at 8:33

ASliceOfBread

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

save = async () => {
this.state.dataSource.notes = this.state.text;
try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');

this.setModalVisible(!this.state.modalVisible);

Array = [
item = 
 id: 'id',
 name: 'name',
 brand: 'brand',
 inname: 'inname',
 chosenWeekDay: 'week day',
 androidDate: 'date for android',
 chosenAndroidTime: 'time for android',
 notes: 'notes in a string',
 ]

share|improve this question

edited Mar 22 at 8:33

ASliceOfBread

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

share|improve this question

edited Mar 22 at 8:33

ASliceOfBread

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

asked Mar 22 at 8:17

ASliceOfBreadASliceOfBread

13

2 Answers
2

active

oldest

votes

0

You need to target a specific object in your dataSource array

let dataSource, text = this.state;
const yourSpecfiicIndex = 12; // whatever
dataSource[yourSpecfiicIndex].notes = text;

//...

await AsyncStorage.setItem('medicines', JSON.stringify(dataSource));

share|improve this answer

edited Mar 22 at 8:54

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  if I console.log clonedDataSource it gives me Object "0": Object "brand": "Ziagen", "chosenDate": "2019-03-22T08:36:24.024Z", "chosenWeekDay": "Ma", "id": 104, "inname": "day", "name": "Abacavir", "notes": "Type je notities hier....", , "notes": "Test",
  
  – ASliceOfBread
  Mar 22 at 8:38
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It has been parsed like this: const value = await AsyncStorage.getItem('medicines'); if(value !== null) const allMeds = JSON.parse(value); this.setState( dataSource: allMeds );
  
  – ASliceOfBread
  Mar 22 at 8:48
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'm sorry ... I was wrong ... your datasource is actually an array not an object, you need to access a specific index ... revise the answer plz
  
  – Hend El-Sahli
  Mar 22 at 8:51
  

  
  
  
  

add a comment | 

0

I found a solutions:

save = async () => 
 this.changeNotes(this.state.id, this.state.text);
 try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');
 
 this.setModalVisible(!this.state.modalVisible);



 changeNotes( value, note ) 
 for (var i in this.state.dataSource) 
 if (this.state.dataSource[i].id == value) 
 this.state.dataSource[i].notes = note;
 break;
 
 
 

share|improve this answer

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13

add a comment | 

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0

You need to target a specific object in your dataSource array

let dataSource, text = this.state;
const yourSpecfiicIndex = 12; // whatever
dataSource[yourSpecfiicIndex].notes = text;

//...

await AsyncStorage.setItem('medicines', JSON.stringify(dataSource));

share|improve this answer

edited Mar 22 at 8:54

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  if I console.log clonedDataSource it gives me Object "0": Object "brand": "Ziagen", "chosenDate": "2019-03-22T08:36:24.024Z", "chosenWeekDay": "Ma", "id": 104, "inname": "day", "name": "Abacavir", "notes": "Type je notities hier....", , "notes": "Test",
  
  – ASliceOfBread
  Mar 22 at 8:38
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It has been parsed like this: const value = await AsyncStorage.getItem('medicines'); if(value !== null) const allMeds = JSON.parse(value); this.setState( dataSource: allMeds );
  
  – ASliceOfBread
  Mar 22 at 8:48
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'm sorry ... I was wrong ... your datasource is actually an array not an object, you need to access a specific index ... revise the answer plz
  
  – Hend El-Sahli
  Mar 22 at 8:51
  

  
  
  
  

add a comment | 

0

You need to target a specific object in your dataSource array

let dataSource, text = this.state;
const yourSpecfiicIndex = 12; // whatever
dataSource[yourSpecfiicIndex].notes = text;

//...

await AsyncStorage.setItem('medicines', JSON.stringify(dataSource));

share|improve this answer

edited Mar 22 at 8:54

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  if I console.log clonedDataSource it gives me Object "0": Object "brand": "Ziagen", "chosenDate": "2019-03-22T08:36:24.024Z", "chosenWeekDay": "Ma", "id": 104, "inname": "day", "name": "Abacavir", "notes": "Type je notities hier....", , "notes": "Test",
  
  – ASliceOfBread
  Mar 22 at 8:38
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It has been parsed like this: const value = await AsyncStorage.getItem('medicines'); if(value !== null) const allMeds = JSON.parse(value); this.setState( dataSource: allMeds );
  
  – ASliceOfBread
  Mar 22 at 8:48
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'm sorry ... I was wrong ... your datasource is actually an array not an object, you need to access a specific index ... revise the answer plz
  
  – Hend El-Sahli
  Mar 22 at 8:51
  

  
  
  
  

add a comment | 

You need to target a specific object in your dataSource array

let dataSource, text = this.state;
const yourSpecfiicIndex = 12; // whatever
dataSource[yourSpecfiicIndex].notes = text;

//...

await AsyncStorage.setItem('medicines', JSON.stringify(dataSource));

share|improve this answer

edited Mar 22 at 8:54

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

let dataSource, text = this.state;
const yourSpecfiicIndex = 12; // whatever
dataSource[yourSpecfiicIndex].notes = text;

//...

await AsyncStorage.setItem('medicines', JSON.stringify(dataSource));

share|improve this answer

edited Mar 22 at 8:54

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

answered Mar 22 at 8:27

Hend El-SahliHend El-Sahli

1,2181314

0

I found a solutions:

save = async () => 
 this.changeNotes(this.state.id, this.state.text);
 try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');
 
 this.setModalVisible(!this.state.modalVisible);



 changeNotes( value, note ) 
 for (var i in this.state.dataSource) 
 if (this.state.dataSource[i].id == value) 
 this.state.dataSource[i].notes = note;
 break;
 
 
 

share|improve this answer

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13

add a comment | 

0

I found a solutions:

save = async () => 
 this.changeNotes(this.state.id, this.state.text);
 try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');
 
 this.setModalVisible(!this.state.modalVisible);



 changeNotes( value, note ) 
 for (var i in this.state.dataSource) 
 if (this.state.dataSource[i].id == value) 
 this.state.dataSource[i].notes = note;
 break;
 
 
 

share|improve this answer

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13

add a comment | 

I found a solutions:

save = async () => 
 this.changeNotes(this.state.id, this.state.text);
 try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');
 
 this.setModalVisible(!this.state.modalVisible);



 changeNotes( value, note ) 
 for (var i in this.state.dataSource) 
 if (this.state.dataSource[i].id == value) 
 this.state.dataSource[i].notes = note;
 break;
 
 
 

share|improve this answer

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13

save = async () => 
 this.changeNotes(this.state.id, this.state.text);
 try 
 AsyncStorage.clear();
 await AsyncStorage.setItem('medicines', JSON.stringify(this.state.dataSource));
 catch (error) 
 console.log('error');
 
 this.setModalVisible(!this.state.modalVisible);



 changeNotes( value, note ) 
 for (var i in this.state.dataSource) 
 if (this.state.dataSource[i].id == value) 
 this.state.dataSource[i].notes = note;
 break;
 
 
 

share|improve this answer

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13

answered Mar 22 at 9:09

ASliceOfBreadASliceOfBread

13