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This is our documentation for beta version of QuickBlox React Native SDK. Please contact our Customer Support Team to provide your feedback, suggestions, and requests to improve this page.

Custom Objects module provides flexibility to define any data structure (schema) you need, build one-to-many relations between schemas and control permissions for all operations made on data. Schema is defined in QuickBlox Dashboard.

There are two key concepts in Custom Objects:
- Class represents your schema and contains field names and types.
- Record represents the data you put into your schema.

Class and Record are similar to table and row in relational database. Every class in Custom Object module comes with five mandatory predefined fields: _id, user_id, parent_id, created_at, and updated_at.

Allowed data types: Integer (or Array of Integer); String (or Array of String); Float (or Array of Float); Boolean (or Array of Boolean); Location (Array of [< longitude >, < latitude >]); File; Date.

Before you begin

1. Visit our Key Concepts page to get an overall understanding of the most important QuickBlox concepts.
2. Register a QuickBlox account. This is a matter of a few minutes and you will be able to use this account to build your apps.
3. Configure QuickBlox SDK for your app. Check out our Setup page for more details.
4. Create a user session to be able to use QuickBlox functionality. See our Authenfication page to learn how to do it.

Create class

To start using Custom Objects module, create a class:

1. Go to QuickBlox Dashboard.
2. Follow Custom => Add => Add new class direction. As a result, Add new class popup will appear.
3. Enter a class name, add any fields you want.

4. Click Create class button to create a new class.

Create records

To create a single object, use the code snippet below.

const customObject = {
  className: 'RNCustomObject2',
  fields: {
    text: 'Lorem ipsum dolor sit amen',
    version: 7,
    tags: [ '#test', '#customobjects', '#quickblox-react-native-sdk'],
    friendsIds: [ 12345, 12346, 12347 ]
  }
}

QB.objects
  .create(customObject)
  .then(function (cObject) { /* custom object created successfully */ })
  .catch(function (e) { /* handle error */ })

To create multiple objects, use the code snippet below.

const customObjects = {
  className: 'RNCustomObject2',
  objects: [{
    tags: [ '#test', '#customobjects', '#quickblox-react-native-sdk'],
    text: 'Lorem ipsum dolor sit amen 1',
    version: 1500
  }, {
    friendsIds: [],
    tags: [ '#test', '#customobjects', '#quickblox-react-native-sdk'],
    text: 'Lorem ipsum dolor sit amen 2',
    version: 1001
  }, {
    tags: [ '#test', '#customobjects', '#quickblox-react-native-sdk'],
    text: 'Lorem ipsum dolor sit amen 3',
    version: 13
  }]
}

QB.objects
  .create(customObjects)
  .then(function (cObjects) { /* custom objects created successfully */ })
  .catch(function (e) { /* handle error */ })

Retrieve records by IDs

To get records with a particular record ID, use the get() method. Set the record ID using the objectsIds field of the query object. Go over Filter and Search operators sections to learn about filters and search operators you can use to retrieve records.

const query = {
  className: 'RNCustomObject2',
  objectsIds: ['5d4175afa0eb4715cae5b63f']
}
QB.objects
  .get(query)
  .then(function (results) { /* records found by IDs */ })
  .catch(function (e) { /* handle error */ })

Retrieve records

You can search for records of a particular class using filters and/or search operators.

const query = {
  className: 'RNCustomObject2',
  filter: {
    field: 'version',
    operator: QB.objects.OBJECTS_SEARCH_OPERATOR.FOR_TYPE.INTEGER.GTE,
    value: '1000'
  },
  sort: {
    ascending: false,
    field: 'created_at'
  }
}

QB.objects
  .get(query)
  .then(function (results) { /* records found */ })
  .catch(function (e) { /* handle error */ })

Filters

Here are the filters that you can use to retrieve records.

Search operators

Here are the search operators that you can use to retrieve records.

Update records

You can update a single record using the code snippet below.

const payload = {
  className: customObject.className,
  id: customObject.id,
  fields: {
    text: 'Lorem ipsum dolor sit amen UPDATED',
    tags: {
      operator: QB.objects.OBJECTS_UPDATE_OPERATOR.FOR_TYPE.ARRAY.ADD_TO_SET,
      value: '#update',
    },
    friendsIds: {
      operator: QB.objects.OBJECTS_UPDATE_OPERATOR.FOR_TYPE.ARRAY.PULL,
      pullFilter: QB.objects.PULL_FILTER.IN,
      value: currentUser.id,
    },
    version: {
      operator: QB.objects.OBJECTS_UPDATE_OPERATOR.FOR_TYPE.INTEGER.INC,
      value: '1'
    }
  }
}

QB.objects
  .update(payload)
  .then(function (updated) { /* custom object updated successfully */ })
  .catch(function (e) { /* handle error */ })

You can update multiple records using the code snippet below.

const payload = {
  className: object1.className,
  objects: [{
    id: object1.id,
    fields: {
      text: `Lorem ipsum dolor sit amen UPDATED 123`,
      tags: [ '#update' ],
    },
  }, {
    id: object2.id,
    fields: {
      friendsIds: [ 1001001, 1001010 ],
      version: 1250
    }
  }]
}

QB.objects
  .update(payload)
  .then(function (updated) { /* items updated successfully */ })
  .catch(function (e) { /* handle errror */ })

Delete records

To delete a single record, use the code snippet below.

const payload = {
  className: object.className,
  ids: object.id
}
QB.objects
  .remove(payload)
  .then(function () { /* removed successfully */ })
  .catch(function (e) { /* handle error */ })

To delete multiple records, use the code snippet below.

const payload = {
  className: object1.className,
  ids: [ object1.id, object2.id ]
}
QB.objects
  .remove(payload)
  .then(function () { /* removed successfully */ })
  .catch(function (e) { /* handle error */ })

Relations

It is possible to create a relation between objects of two different classes via _parent_id field.

For example, we have the class Rating that contains score, review, and comment fields. We also have a Movie class. So we can create a record of class Rating that will point to the record of the class Movie via its _parent_id field, so the _parent_id field will contain the ID of record from class Movie.

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This is not a simple soft link. This is actually a hard link. When you delete the Movie class record then all its children (records of class Rating with _parent_id field set to the Movie class record ID) will be automatically deleted as well.

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If you need to retrieve all children, you can retrieve records with the filter _parent_id=<id_of_parent_class_record>.