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    crud-servicepublic

    crud-service

    build status

    NPM

    Simple crud service for object definition, validation, basic persistence and collection.

    Installation

    npm install crud-service
    

    Usage

    const createCrudService = require('crud-service')
    const save = require('save')
    const schema = require('./schema')
    const service = createCrudService('things', save('thing'), schema())
     
    // service now has some slightly inflated CRUD functionality:
    // .create() .read() .update() .partialUpdate()
    // .delete() .deleteMany() .find() .count()

    API

    var service = new CrudService(String: propertyName, Save: collection, Schemata: schema, Object, options)

    Create a new crud service that stores entites in the provided collection. This should be a save instance with your preferred engine. A schemata schema is required for validation

    service has the the following CRUD-y methods:

    service.create(Object: obj, Object: options, Function: cb)

    service.read(String: objId, Function: cb)

    service.update(Object: obj, Object: options, Function: cb)

    service.partialUpdate(Object: obj, Object: options, Function: cb)

    service.delete(String: objId, Function: cb)

    service.deleteMany(Object: query, Function: cb)

    service.find(Object: query, Object: options, Function: cb)

    All options arguments are optional.

    Omitting cb when calling service.find() will return a stream.

    service also has the following method:

    service.pre(String: hook, Function: processor)

    This facilitates a pipeline for object manipulation before certain operations. pre() can be called multiple times for the same hook and the processor functions will be queued up. A processor function has the signature function (entity, cb) {}, and should callback with cb(err, entity).

    A simple example is to maintain a lastUpdated property on service objects:

    const setUpdateTime = (entity, cb) => {
      entity.lastUpdated = new Date()
      cb(null, entity)
    }
     
    service.pre('update', setUpdateTime)
    service.pre('partialUpdate', setUpdateTime)

    The available pre hooks are:

    • create - after validation, just before persistence
    • createValidate - before validation
    • update - after validation, just before persistence
    • updateValidate - before validation
    • partialUpdate - after validation, just before persistence
    • partialValidate - before validation
    • delete - before deletion

    Credits

    Paul Serby follow me on twitter @serby

    License

    Licensed under the ISC

    Keywords

    none

    install

    npm i crud-service

    Downloadslast 7 days

    161

    version

    1.0.0

    license

    ISC

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