Sub-document in an array saves as an empty array item if no value is provided on document creation
0
What I want is for a particular field in my schema to be an array with items in it.
When I create the document in question, I will not have any array items. Therefore, I expect my document to look like:
{
notes:
}
The problem is, I'm getting an array that looks like:
{
notes: ['']
}
Querying the notes.length, I get 1, which is problematic for me, because it's essentially an empty array item.
This is the code I'm working with:
const SubDocumentSchema = function () {
return new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
}
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema()]
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
arrays mongodb mongoose mongoose-schema
asked Nov 14 '18 at 3:57
Modermo
547314
add a comment |
0
What I want is for a particular field in my schema to be an array with items in it.
When I create the document in question, I will not have any array items. Therefore, I expect my document to look like:
{
notes:
}
The problem is, I'm getting an array that looks like:
{
notes: ['']
}
Querying the notes.length, I get 1, which is problematic for me, because it's essentially an empty array item.
This is the code I'm working with:
const SubDocumentSchema = function () {
return new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
}
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema()]
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
arrays mongodb mongoose mongoose-schema
asked Nov 14 '18 at 3:57
Modermo
547314
1
What isNotesSchema? Not in your code. It also probably should betype: [NotesSchema]since the()implies invoking a function, not assigning a "schema type" as you should be doing here.
– Neil Lunn
Nov 14 '18 at 4:02
Sorry, I fixed that. I actually changed the schema to justnew....without being returned from a function, but I'm still get an array with an empty first value. I hope that makes sense.
– Modermo
Nov 14 '18 at 4:33
1
Again you don't donew. Just do it like I already ( and as the documentation also does ) showed you.type: [SubDocumentSchema]. Nonewand no brackets(). You use it there just like the second argument in yourmongoose.modelcall.model('DocumentSchema', DocumentSchema)where again, nonewand no brackets().
– Neil Lunn
Nov 14 '18 at 4:37
I could be misunderstanding, but the Mongoose docs do specify instantiating a new schema sub-doc.
– Modermo
Nov 14 '18 at 5:07
1
You're misunderstanding.const SubDocumentSchema = new Schema({ ...It's the same for "all schema" whether it's the root of the model, or in an array or just a property. So nofunction(), no returning a function and certainly no invoking. The "invocation" is actually what is creating the "empty string". See also mongoosejs.com/docs/subdocs.html
– Neil Lunn
Nov 14 '18 at 5:11
add a comment |
0
0
0
What I want is for a particular field in my schema to be an array with items in it.
When I create the document in question, I will not have any array items. Therefore, I expect my document to look like:
{
notes:
}
The problem is, I'm getting an array that looks like:
{
notes: ['']
}
Querying the notes.length, I get 1, which is problematic for me, because it's essentially an empty array item.
This is the code I'm working with:
const SubDocumentSchema = function () {
return new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
}
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema()]
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
arrays mongodb mongoose mongoose-schema
asked Nov 14 '18 at 3:57
Modermo
547314
What I want is for a particular field in my schema to be an array with items in it.
When I create the document in question, I will not have any array items. Therefore, I expect my document to look like:
{
notes:
}
The problem is, I'm getting an array that looks like:
{
notes: ['']
}
Querying the notes.length, I get 1, which is problematic for me, because it's essentially an empty array item.
This is the code I'm working with:
const SubDocumentSchema = function () {
return new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
}
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema()]
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
arrays mongodb mongoose mongoose-schema
arrays mongodb mongoose mongoose-schema
asked Nov 14 '18 at 3:57
Modermo
547314
asked Nov 14 '18 at 3:57
Modermo
547314
edited Nov 14 '18 at 4:30
asked Nov 14 '18 at 3:57
Modermo
547314
asked Nov 14 '18 at 3:57
Modermo
547314
asked Nov 14 '18 at 3:57
Modermo
547314
547314
1
What isNotesSchema? Not in your code. It also probably should betype: [NotesSchema]since the()implies invoking a function, not assigning a "schema type" as you should be doing here.
– Neil Lunn
Nov 14 '18 at 4:02
Sorry, I fixed that. I actually changed the schema to justnew....without being returned from a function, but I'm still get an array with an empty first value. I hope that makes sense.
– Modermo
Nov 14 '18 at 4:33
1
Again you don't donew. Just do it like I already ( and as the documentation also does ) showed you.type: [SubDocumentSchema]. Nonewand no brackets(). You use it there just like the second argument in yourmongoose.modelcall.model('DocumentSchema', DocumentSchema)where again, nonewand no brackets().
– Neil Lunn
Nov 14 '18 at 4:37
I could be misunderstanding, but the Mongoose docs do specify instantiating a new schema sub-doc.
– Modermo
Nov 14 '18 at 5:07
1
You're misunderstanding.const SubDocumentSchema = new Schema({ ...It's the same for "all schema" whether it's the root of the model, or in an array or just a property. So nofunction(), no returning a function and certainly no invoking. The "invocation" is actually what is creating the "empty string". See also mongoosejs.com/docs/subdocs.html
– Neil Lunn
Nov 14 '18 at 5:11
add a comment |
1
What isNotesSchema? Not in your code. It also probably should betype: [NotesSchema]since the()implies invoking a function, not assigning a "schema type" as you should be doing here.
– Neil Lunn
Nov 14 '18 at 4:02
Sorry, I fixed that. I actually changed the schema to justnew....without being returned from a function, but I'm still get an array with an empty first value. I hope that makes sense.
– Modermo
Nov 14 '18 at 4:33
1
Again you don't donew. Just do it like I already ( and as the documentation also does ) showed you.type: [SubDocumentSchema]. Nonewand no brackets(). You use it there just like the second argument in yourmongoose.modelcall.model('DocumentSchema', DocumentSchema)where again, nonewand no brackets().
– Neil Lunn
Nov 14 '18 at 4:37
I could be misunderstanding, but the Mongoose docs do specify instantiating a new schema sub-doc.
– Modermo
Nov 14 '18 at 5:07
1
You're misunderstanding.const SubDocumentSchema = new Schema({ ...It's the same for "all schema" whether it's the root of the model, or in an array or just a property. So nofunction(), no returning a function and certainly no invoking. The "invocation" is actually what is creating the "empty string". See also mongoosejs.com/docs/subdocs.html
– Neil Lunn
Nov 14 '18 at 5:11
1
1
What is
NotesSchema? Not in your code. It also probably should be type: [NotesSchema] since the () implies invoking a function, not assigning a "schema type" as you should be doing here.– Neil Lunn
Nov 14 '18 at 4:02
What is
NotesSchema? Not in your code. It also probably should be type: [NotesSchema] since the () implies invoking a function, not assigning a "schema type" as you should be doing here.– Neil Lunn
Nov 14 '18 at 4:02
Sorry, I fixed that. I actually changed the schema to just
new.... without being returned from a function, but I'm still get an array with an empty first value. I hope that makes sense.– Modermo
Nov 14 '18 at 4:33
Sorry, I fixed that. I actually changed the schema to just
new.... without being returned from a function, but I'm still get an array with an empty first value. I hope that makes sense.– Modermo
Nov 14 '18 at 4:33
1
1
Again you don't do
new. Just do it like I already ( and as the documentation also does ) showed you. type: [SubDocumentSchema]. No new and no brackets (). You use it there just like the second argument in your mongoose.model call .model('DocumentSchema', DocumentSchema) where again, no new and no brackets ().– Neil Lunn
Nov 14 '18 at 4:37
Again you don't do
new. Just do it like I already ( and as the documentation also does ) showed you. type: [SubDocumentSchema]. No new and no brackets (). You use it there just like the second argument in your mongoose.model call .model('DocumentSchema', DocumentSchema) where again, no new and no brackets ().– Neil Lunn
Nov 14 '18 at 4:37
I could be misunderstanding, but the Mongoose docs do specify instantiating a new schema sub-doc.
– Modermo
Nov 14 '18 at 5:07
I could be misunderstanding, but the Mongoose docs do specify instantiating a new schema sub-doc.
– Modermo
Nov 14 '18 at 5:07
1
1
You're misunderstanding.
const SubDocumentSchema = new Schema({ ... It's the same for "all schema" whether it's the root of the model, or in an array or just a property. So no function(), no returning a function and certainly no invoking. The "invocation" is actually what is creating the "empty string". See also mongoosejs.com/docs/subdocs.html– Neil Lunn
Nov 14 '18 at 5:11
You're misunderstanding.
const SubDocumentSchema = new Schema({ ... It's the same for "all schema" whether it's the root of the model, or in an array or just a property. So no function(), no returning a function and certainly no invoking. The "invocation" is actually what is creating the "empty string". See also mongoosejs.com/docs/subdocs.html– Neil Lunn
Nov 14 '18 at 5:11
add a comment |
1 Answer
1
active
oldest
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2
You can specify empty array as the default value for notes. And you don't need to return a function for the SubDocumentSchema. Try the below edited code.
const SubDocumentSchema = new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema],
default:
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
add a comment |
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2
You can specify empty array as the default value for notes. And you don't need to return a function for the SubDocumentSchema. Try the below edited code.
const SubDocumentSchema = new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema],
default:
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
add a comment |
2
You can specify empty array as the default value for notes. And you don't need to return a function for the SubDocumentSchema. Try the below edited code.
const SubDocumentSchema = new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema],
default:
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
add a comment |
2
2
2
You can specify empty array as the default value for notes. And you don't need to return a function for the SubDocumentSchema. Try the below edited code.
const SubDocumentSchema = new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema],
default:
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
You can specify empty array as the default value for notes. And you don't need to return a function for the SubDocumentSchema. Try the below edited code.
const SubDocumentSchema = new mongoose.Schema({
content: {
type: String,
trim: true
},
date: {
type: Date,
default: Date.now
}
})
const DocumentSchema = new mongoose.Schema({
notes: {
type: [SubDocumentSchema],
default:
}
});
const Document = mongooseConnection.model('DocumentSchema', DocumentSchema)
const t = new Document()
t.save()
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
answered Nov 14 '18 at 7:06
Karthik Samyak
121110
121110
add a comment |
add a comment |
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1
What is
NotesSchema? Not in your code. It also probably should betype: [NotesSchema]since the()implies invoking a function, not assigning a "schema type" as you should be doing here.– Neil Lunn
Nov 14 '18 at 4:02
Sorry, I fixed that. I actually changed the schema to just
new....without being returned from a function, but I'm still get an array with an empty first value. I hope that makes sense.– Modermo
Nov 14 '18 at 4:33
1
Again you don't do
new. Just do it like I already ( and as the documentation also does ) showed you.type: [SubDocumentSchema]. Nonewand no brackets(). You use it there just like the second argument in yourmongoose.modelcall.model('DocumentSchema', DocumentSchema)where again, nonewand no brackets().– Neil Lunn
Nov 14 '18 at 4:37
I could be misunderstanding, but the Mongoose docs do specify instantiating a new schema sub-doc.
– Modermo
Nov 14 '18 at 5:07
1
You're misunderstanding.
const SubDocumentSchema = new Schema({ ...It's the same for "all schema" whether it's the root of the model, or in an array or just a property. So nofunction(), no returning a function and certainly no invoking. The "invocation" is actually what is creating the "empty string". See also mongoosejs.com/docs/subdocs.html– Neil Lunn
Nov 14 '18 at 5:11