How to delete a Collection in LokiJS
I been working on LokiJS on Node recently, And I could'nt find a command that deletes the entire Collection itself,
I tried with these commands with an assumption it would exist, I could not find any docs/ samples to delete a collection.
// let result = this.db.dropCollection(collectionName);
// let result = this.db.removeCollection(collectionName);
// let result = this.db.deleteCollection(collectionName);
Other way around I know I can achieve the same by reading the file and removing the entire object, But is there a built-in LokiJS function?
javascript node.js node-modules lokijs
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
add a comment |
I been working on LokiJS on Node recently, And I could'nt find a command that deletes the entire Collection itself,
I tried with these commands with an assumption it would exist, I could not find any docs/ samples to delete a collection.
// let result = this.db.dropCollection(collectionName);
// let result = this.db.removeCollection(collectionName);
// let result = this.db.deleteCollection(collectionName);
Other way around I know I can achieve the same by reading the file and removing the entire object, But is there a built-in LokiJS function?
javascript node.js node-modules lokijs
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
add a comment |
I been working on LokiJS on Node recently, And I could'nt find a command that deletes the entire Collection itself,
I tried with these commands with an assumption it would exist, I could not find any docs/ samples to delete a collection.
// let result = this.db.dropCollection(collectionName);
// let result = this.db.removeCollection(collectionName);
// let result = this.db.deleteCollection(collectionName);
Other way around I know I can achieve the same by reading the file and removing the entire object, But is there a built-in LokiJS function?
javascript node.js node-modules lokijs
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
I been working on LokiJS on Node recently, And I could'nt find a command that deletes the entire Collection itself,
I tried with these commands with an assumption it would exist, I could not find any docs/ samples to delete a collection.
// let result = this.db.dropCollection(collectionName);
// let result = this.db.removeCollection(collectionName);
// let result = this.db.deleteCollection(collectionName);
Other way around I know I can achieve the same by reading the file and removing the entire object, But is there a built-in LokiJS function?
javascript node.js node-modules lokijs
javascript node.js node-modules lokijs
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
edited Nov 23 '18 at 12:57
Teemu
18.5k63773
18.5k63773
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
asked Nov 23 '18 at 12:06
Mahesh KumaranMahesh Kumaran
616
616
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
To delete a collection you need to use the removeCollection() method on the main Loki object. See docs here.
For example, if you have your Loki instance initialized like this:
const loki = require('lokijs');
const lokidb = new loki();
// Add a collection (that we will remove later)
let myCollection = lokidb.addCollection('myCollection');
Now lokidb is your main loki object, and this is the object that you need to execute the removeCollection() from.
// Let's remove the collection
lokidb.removeCollection('myCollection');
// * poof * ....
// myCollection is now gone
// To make sure that this deleting change is persisted (if necessary)
lokidb.saveDatabase();
I don't know exactly how you have your loki db set up, but hopefully this example helps.
answered Jan 1 at 18:08
Adam DAdam D
423215
1
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
1
Hey , i just found what the issue was ,lokidb.saveDatabase();actually reflects the changes, infact i kept the autosave interval very less , still dint work -lokidb.saveDatabase();did the trick !! Thanks for the help !!
– Mahesh Kumaran
Jan 21 at 9:39
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
Even withdb.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid}));still doesn't work.
– Polv
Mar 28 at 18:50
add a comment |
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1 Answer
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1 Answer
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oldest
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active
oldest
votes
To delete a collection you need to use the removeCollection() method on the main Loki object. See docs here.
For example, if you have your Loki instance initialized like this:
const loki = require('lokijs');
const lokidb = new loki();
// Add a collection (that we will remove later)
let myCollection = lokidb.addCollection('myCollection');
Now lokidb is your main loki object, and this is the object that you need to execute the removeCollection() from.
// Let's remove the collection
lokidb.removeCollection('myCollection');
// * poof * ....
// myCollection is now gone
// To make sure that this deleting change is persisted (if necessary)
lokidb.saveDatabase();
I don't know exactly how you have your loki db set up, but hopefully this example helps.
answered Jan 1 at 18:08
Adam DAdam D
423215
1
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
1
Hey , i just found what the issue was ,lokidb.saveDatabase();actually reflects the changes, infact i kept the autosave interval very less , still dint work -lokidb.saveDatabase();did the trick !! Thanks for the help !!
– Mahesh Kumaran
Jan 21 at 9:39
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
Even withdb.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid}));still doesn't work.
– Polv
Mar 28 at 18:50
add a comment |
To delete a collection you need to use the removeCollection() method on the main Loki object. See docs here.
For example, if you have your Loki instance initialized like this:
const loki = require('lokijs');
const lokidb = new loki();
// Add a collection (that we will remove later)
let myCollection = lokidb.addCollection('myCollection');
Now lokidb is your main loki object, and this is the object that you need to execute the removeCollection() from.
// Let's remove the collection
lokidb.removeCollection('myCollection');
// * poof * ....
// myCollection is now gone
// To make sure that this deleting change is persisted (if necessary)
lokidb.saveDatabase();
I don't know exactly how you have your loki db set up, but hopefully this example helps.
answered Jan 1 at 18:08
Adam DAdam D
423215
1
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
1
Hey , i just found what the issue was ,lokidb.saveDatabase();actually reflects the changes, infact i kept the autosave interval very less , still dint work -lokidb.saveDatabase();did the trick !! Thanks for the help !!
– Mahesh Kumaran
Jan 21 at 9:39
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
Even withdb.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid}));still doesn't work.
– Polv
Mar 28 at 18:50
add a comment |
To delete a collection you need to use the removeCollection() method on the main Loki object. See docs here.
For example, if you have your Loki instance initialized like this:
const loki = require('lokijs');
const lokidb = new loki();
// Add a collection (that we will remove later)
let myCollection = lokidb.addCollection('myCollection');
Now lokidb is your main loki object, and this is the object that you need to execute the removeCollection() from.
// Let's remove the collection
lokidb.removeCollection('myCollection');
// * poof * ....
// myCollection is now gone
// To make sure that this deleting change is persisted (if necessary)
lokidb.saveDatabase();
I don't know exactly how you have your loki db set up, but hopefully this example helps.
answered Jan 1 at 18:08
Adam DAdam D
423215
To delete a collection you need to use the removeCollection() method on the main Loki object. See docs here.
For example, if you have your Loki instance initialized like this:
const loki = require('lokijs');
const lokidb = new loki();
// Add a collection (that we will remove later)
let myCollection = lokidb.addCollection('myCollection');
Now lokidb is your main loki object, and this is the object that you need to execute the removeCollection() from.
// Let's remove the collection
lokidb.removeCollection('myCollection');
// * poof * ....
// myCollection is now gone
// To make sure that this deleting change is persisted (if necessary)
lokidb.saveDatabase();
I don't know exactly how you have your loki db set up, but hopefully this example helps.
answered Jan 1 at 18:08
Adam DAdam D
423215
edited Jan 21 at 12:33
answered Jan 1 at 18:08
Adam DAdam D
423215
answered Jan 1 at 18:08
Adam DAdam D
423215
answered Jan 1 at 18:08
Adam DAdam D
423215
423215
1
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
1
Hey , i just found what the issue was ,lokidb.saveDatabase();actually reflects the changes, infact i kept the autosave interval very less , still dint work -lokidb.saveDatabase();did the trick !! Thanks for the help !!
– Mahesh Kumaran
Jan 21 at 9:39
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
Even withdb.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid}));still doesn't work.
– Polv
Mar 28 at 18:50
add a comment |
1
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
1
Hey , i just found what the issue was ,lokidb.saveDatabase();actually reflects the changes, infact i kept the autosave interval very less , still dint work -lokidb.saveDatabase();did the trick !! Thanks for the help !!
– Mahesh Kumaran
Jan 21 at 9:39
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
Even withdb.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid}));still doesn't work.
– Polv
Mar 28 at 18:50
1
1
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
I tried the same , but din't work, am i missing anything else ?
– Mahesh Kumaran
Jan 9 at 12:01
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
Can you share a full example of your code, on a code pen, or a gist?
– Adam D
Jan 10 at 10:23
1
1
Hey , i just found what the issue was ,
lokidb.saveDatabase(); actually reflects the changes, infact i kept the autosave interval very less , still dint work - lokidb.saveDatabase();did the trick !! Thanks for the help !!– Mahesh Kumaran
Jan 21 at 9:39
Hey , i just found what the issue was ,
lokidb.saveDatabase(); actually reflects the changes, infact i kept the autosave interval very less , still dint work - lokidb.saveDatabase();did the trick !! Thanks for the help !!– Mahesh Kumaran
Jan 21 at 9:39
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
@MaheshKumaran Glad you figured that out. I added your step in case any others have issues with persistence and autoSave like you did. If you want, check the answer as solved to help others. :-)
– Adam D
Jan 21 at 12:35
Even with
db.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid})); still doesn't work.– Polv
Mar 28 at 18:50
Even with
db.card.findAndRemove({guid}); await new Promise((resolve, reject) => { db.loki.saveDatabase((err) => err ? reject(err) : resolve()); }); console.log(db.card.find({guid})); still doesn't work.– Polv
Mar 28 at 18:50
add a comment |
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