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How can I retrieve data from firebase realtime database?

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1

1

I want to show data from Firebase realtime database into my app. I have integrated it with firebase database and can use update, delete, create user in db.

My database structure is like this

schooldbproject
-class_1
 1
 age: 24
 name:"Pheng Sengvuthy 004"

This is the code I wrote to create db:

 // To select data from firebase every time data has changed !
 firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(data.toJSON());
 )


 //create
 firebase.database().ref('class_1/1').set(
 
 name: 'Pheng Sengvuthy 004',
 age: 24
 
 ).then(() => 
 console.log('INSERTED !');
 ).catch((error) => 
 console.log(error);
 );


 // To Update a user
 firebase.database().ref('users/004').update(
 name: 'Pheng Sengvuthy'
 );

How can I show data into text component as I am creating school CMS?

javascript react-native firebase-realtime-database

share|improve this question

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

add a comment | 

1

1

I want to show data from Firebase realtime database into my app. I have integrated it with firebase database and can use update, delete, create user in db.

My database structure is like this

schooldbproject
-class_1
 1
 age: 24
 name:"Pheng Sengvuthy 004"

This is the code I wrote to create db:

 // To select data from firebase every time data has changed !
 firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(data.toJSON());
 )


 //create
 firebase.database().ref('class_1/1').set(
 
 name: 'Pheng Sengvuthy 004',
 age: 24
 
 ).then(() => 
 console.log('INSERTED !');
 ).catch((error) => 
 console.log(error);
 );


 // To Update a user
 firebase.database().ref('users/004').update(
 name: 'Pheng Sengvuthy'
 );

How can I show data into text component as I am creating school CMS?

javascript react-native firebase-realtime-database

share|improve this question

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

add a comment | 

I want to show data from Firebase realtime database into my app. I have integrated it with firebase database and can use update, delete, create user in db.

My database structure is like this

schooldbproject
-class_1
 1
 age: 24
 name:"Pheng Sengvuthy 004"

This is the code I wrote to create db:

 // To select data from firebase every time data has changed !
 firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(data.toJSON());
 )


 //create
 firebase.database().ref('class_1/1').set(
 
 name: 'Pheng Sengvuthy 004',
 age: 24
 
 ).then(() => 
 console.log('INSERTED !');
 ).catch((error) => 
 console.log(error);
 );


 // To Update a user
 firebase.database().ref('users/004').update(
 name: 'Pheng Sengvuthy'
 );

How can I show data into text component as I am creating school CMS?

javascript react-native firebase-realtime-database

share|improve this question

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

schooldbproject
-class_1
 1
 age: 24
 name:"Pheng Sengvuthy 004"

 // To select data from firebase every time data has changed !
 firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(data.toJSON());
 )


 //create
 firebase.database().ref('class_1/1').set(
 
 name: 'Pheng Sengvuthy 004',
 age: 24
 
 ).then(() => 
 console.log('INSERTED !');
 ).catch((error) => 
 console.log(error);
 );


 // To Update a user
 firebase.database().ref('users/004').update(
 name: 'Pheng Sengvuthy'
 );

share|improve this question

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

share|improve this question

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

edited Mar 24 at 14:54

Frank van Puffelen

254k31409436

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

asked Mar 24 at 8:27

Umer AfzalUmer Afzal

61

1 Answer
1

active

oldest

votes

0

You seem to be repeating the database name here:

firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

That is not needed. The path you read from should be the same as the path you write to

firebase.database().ref('class_1/1').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

If you want to read the entire database, request a reference to the root by passing no arguments to ref():

firebase.database().ref().on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

share|improve this answer

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436

add a comment | 

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0

You seem to be repeating the database name here:

firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

That is not needed. The path you read from should be the same as the path you write to

firebase.database().ref('class_1/1').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

If you want to read the entire database, request a reference to the root by passing no arguments to ref():

firebase.database().ref().on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

share|improve this answer

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436

add a comment | 

0

You seem to be repeating the database name here:

firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

That is not needed. The path you read from should be the same as the path you write to

firebase.database().ref('class_1/1').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

If you want to read the entire database, request a reference to the root by passing no arguments to ref():

firebase.database().ref().on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

share|improve this answer

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436

add a comment | 

You seem to be repeating the database name here:

firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

That is not needed. The path you read from should be the same as the path you write to

firebase.database().ref('class_1/1').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

If you want to read the entire database, request a reference to the root by passing no arguments to ref():

firebase.database().ref().on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

share|improve this answer

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436

firebase.database().ref('schooldbproject').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

firebase.database().ref('class_1/1').on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

firebase.database().ref().on('value', (data) => 
 console.log(JSON.stringify(data.val()));
)

share|improve this answer

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436

answered Mar 24 at 14:57

Frank van PuffelenFrank van Puffelen

254k31409436