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I'm making a web app which allows users to create their own custom MongoDB collections on my server by first 'registering' the schema in a client-side form.
So the user will create a schema client side - say using a form like this: http://r.github.com/annotationsformatter/
So the client-side Js will generate a JSON object of the form, for example:
{
"collection_name": "person",
"data":
{
"name": "String",
"email": "String",
"id", "Number",
}
}
Next, the page will send this object to the server, which should convert the stuff in data to a proper Mongoose Schema and create a collection from it, of collection name person.
I'm lost - how would I go about doing this? I'm talking about the conversion-to-schema part.
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You can also define MongoDB indexes using schema type options. index : boolean, whether to define an index on this property. unique : boolean, whether to define a unique index on this property. sparse : boolean, whether to define a sparse index on this property.
With Mongoose, you would define a Schema object in your application code that maps to a collection in your MongoDB database. The Schema object defines the structure of the documents in your collection. Then, you need to create a Model object out of the schema. The model is used to interact with the collection.
A Mongoose schema defines the structure of the document, default values, validators, etc., whereas a Mongoose model provides an interface to the database for creating, querying, updating, deleting records, etc.
The $set operator replaces the value of a field with the specified value. The $set operator expression has the following form: { $set: { <field1>: <value1>, ... } } To specify a <field> in an embedded document or in an array, use dot notation.
I have written a node.js library for exactly this purpose: generate mongoose models from .json configuration files.
It's called mongoose-gen. It supports all mongoose types, it has hooks for validators, setters, getters and default values.
Hope it helps.
110
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