crud

CRUD for mono

####Example config with flow:

config: {
    myMiid: {
        myEvent: ['read', 'update', 'create', 'delete']
    }
}

All these events must have two parameters:

• the CRUD object defined by the CRUD module. See example request data.
• the callback to be called with the results when the operation completes.

####Fetch templates

If an array is send to self.emit('read') as data CRUD will fetch the templates inside the array. Normal queries for templates are working also. Templates are always initialized before returned.

CRUD object format

• t (client) or templateId (server): the stringified ObjectID id od this template
• q (client) or query (server): a query object in MongoDB query format used for read, update, delete operations
• d (client) or data (server): a data object for update or create operations. The update operation requires the MongoDB update document format, while for the create operations this will be interpreted as the document to be created.
• o (client) or options (server): an options object in the MongoDB NodeJs Driver format that can contain: fields, sort, skip, limit, etc. options
• role (server): the role in the name of which this request should be made. This usually comes from link.session.crudRole. From the client this fiels is not necessary because it will be automatically added on the server side depending on the role of the user making this request.

Client CRUD requests

Example request data:

{
    // the template that this CRUD object will be validated against
    t: 'the stringified template id',
    // the query object in MongoDB format
    q: {/*query object*/},
    // the document object (updates) in MongoDB format
    d: {/*update document*/},
    // the CRUD operation options in node-monogdb-native (NodeJs MongoDb driver) format
    o: {/*options*/},
    // don't make joins
    noJoins: true,
    // don't merge template
    noMerge: true,
    // don't return cursors for read operations
    noCursor: true,
    // perform only a count using the given query
    onlyCount: true
}

Server CRUD requests

Example request data:

Build the CRUD request object:

{
    templateId: 'the stringified template id',
    role: ObjectId('the crud role'), // link.session.crudRole
    query: {
        /* query data */
    },
    data: {
        /* data to insert/update */
    },
    noCursor: true // don't return cursors for read operations,
    onlyCount: true // perform only a count using the given query
}

and emit a crud.<operation> server-side event:

M.emit("crud.create", crudObject, callback);

Template config

myTemplate = {
    _id: myTemplateItemId,
    _tp: [_templateTemplateId],
    db: 'dbName',
    collection: 'collectionName',
    name: 'template_name',
    roles: {
        // set any combination of c, r, u or d in access
        'roleId': {access: 'crud'},
        // optional template configuration overwriting
        // the only supported template properties are: options, links, and schema
        'config': {
            'options': {
                'html': 'another/html/file.html'
            },
            'links': {
                // ...
            },
            'schema': {
                ...
            }
        }
    },
    // add a role with access rights to every item
    itemAccess: 'crud',
    options: {
        label: {
            de: 'Template Label'
        },
        order: 5,
        html: '/myTemplate.html',
        sort: [['sort.field', 1]],
        // a hidden fixed filter to display only the customers that are HB
        filters: [
            {
                field: 'filterFIeld',
                operator: 'exists',
                value: true,
                hidden: true,
                fixed: true
            }
        ]
    },
    // plug custom code
    on: {
        create: {
            myCustomEventA: [arg1, argN]
        },
        read: {
            myCustomEventB: [arg1, argN]
        },
        update: {
            myCustomEventC: [arg1, argN]
        },
        delete: {
            myCustomEventD: [arg1, argN]
        }
    },

    links: [
        // see crud links module
    ],
    schema: {
        // modm schema
    }
}

Change log

v0.6.0

• Configurable core template initialization. A init operation must be configured in the crud application.json miid before the module can be used. The operation params must contain a templateConfig object with a db property (the db name where the templates are located)

v0.5.2

• Implemented a templatesNotFound event

v0.5.1

• Added findAndModify template option for the update operation

v0.5.0

• Transferred the module to the new jxMono organization
• Updated Flow to v0.2.0

v0.4.1

• Template role handling: always return at least current role in a template document.

v0.4.0

• Added onlyCount option to find requests
• Count is no longer performed for every find request

v0.3.8

• Fixed template merging for templates that are not fetched by id

v0.3.7

• Fixed templateId handling to a uniform behavior: always ObjectID

v0.3.6

• Fixed read, update and delete operations with empty query string that were not adding the _tp to the query before executing it.

v0.3.5

• Added init operation to expose the server side initialization if no other crud operations are needed.

v0.3.4

• Added missing sort argument to findAndRemove db request.

v0.3.3

• Cache modm instances. Solves a critical memory leak.

v0.3.2

• Fixed a bug from v0.3.1 (undefined is not a function)

v0.3.1

• Added public access feature

v0.3.0

• added the noCursor crud read request option to automatically convert all the cursors into array. Default false

• fixed the linked field filtering

• sort linked fields using JavaScript sort methods after we have the full result array

• added noJoins: true template option to disable linked template joining

• get template requests filter out all roles except the user role

• callback the data after running non-read operations and server events

• emit request.template.callback event if this is provided (also, don't call the built-in callback)

• dates are converted using moment.js if this is installed. Dates in valid ISO date format (YYYY-MM-DDThh:mm:ss.MMM) will be parsed with the Date constructor.

• Introduced before and after configuration:

  {
      before: {
          appId: {
              create: "createEventB",
              read: "readEventB",
              update: "updateEventB",
              delete: "deleteEventB"
          }
      },
      after: {
          appId: {
              create: "createEventA",
              read: "readEventA",
              update: "updateEventA",
              delete: "deleteEventA"
          }
      }
  }

  or

  {
      before: { appId: "catchAllB" },
      after: { appId: "catchAllA" }
  }

  In server custom scripts we can do:

  // before event
  M.on("crud:createEventB", function (request, callback) {
    // do another db request
    foo(request, function (err, data) {
      if (err) { return callback(err); }
      request.query.something = data.something;
      callback(null, request);
    });
  });
  
  // after event
  M.on("crud:createEventA", function (request, err, data, callback) {
    // handle error message
    // then send the callback
    callback(err, data);
  });

v0.2.14

• Fixed wrong behavior when sorting numbers and strings. Related to #29.

v0.2.13

• Fixed the wrong behavior when sorting dates
• Improved the sort method.

v0.2.12

• fixed item link bug that was nullifying itms with no linked objects
• v0.2.11 had to be skipped because of an unprotected object reference and a server installation was already performed

v0.2.10

• fixed MongoDB connection leak due to template cache bug
• fixed typo in mongo server options when initializing modm for each template

v0.2.9

• fixed fetch template requests that were not converting $in string arrays into ObjectId arrays
• fixed template cache retrieval problem

v0.2.8

• fixed the cursor constructor name: Cursor instead of Object

v0.2.7

• TODO

v0.2.6

• fixed client bug when merging templates: links were polluting the template cache

v0.2.5

• fixed bug in recursive query conversion

v0.2.4

• added date conversion

v0.2.3

• set data as request.result

v0.2.2

• overwrite request.method. Return error in createError function

v0.2.1

• add fixed cloneJSON bug when handling ObjectID's

v0.2.0

• added role template configuration overwriting

v0.1.1

• fixed wrong M.on server configuration for the crud_read event that was using create as the model operation to call

v0.1.0

• initial release