Contentstack Delivery Dart SDK

Dart Delivery SDK for Contentstack

Contentstack is a headless CMS with an API-first approach. It is a CMS that developers can use to build powerful cross-platform applications in their favorite languages. Build your application front end, and Contentstack will take care of the rest. Read More.

Contentstack provides Dart Delivery SDK to build applications on top of Dart. Given below is the detailed guide and helpful resources to get started with our Dart Delivery SDK.

Prerequisite

This guide will help you get started with Contentstack Dart SDK to build Flutter apps powered by Contentstack.

SDK Installation and Setup

To use the Contentstack Dart SDK with your existing project, perform the following steps:

Create a New Flutter Project in VS Code

Open VS Code and select Extensions from the left navigation panel.
Then, in the Search Extensions in Marketplace search box, type Flutter. From the quick results, click on Flutter.
From the Flutter details page, click on Install.
Press Ctrl + Shift + P on Windows and Cmd + Shift + P on macOS.
Type flutter and select Flutter: New Project.
If the Flutter SDK is not installed on your machine, it will ask you to Download SDK. Click on it and from the pop-up that opens, click on Open.
It will take you the Flutter install page. Select as per your OS and the download will begin.
Once it is installed, follow steps 4 and 5 and create a new Flutter project.

Create a New Project in Android Studio

Open Android Studio and click on Configure.
Then, select Plugins. From the resulting screen, click on Flutter and click on Install.
Click on Accept and then Yes to install the Dart plugin.
Click on Restart when prompted.
In the Android Studio IDE, click on Start a new Flutter project from the Welcome screen.
Then, select Flutter Application in the menu, and click on Next.
On the next screen, give your project a name, provide the Flutter SDK path (where you installed the Flutter SDK), and your project location.
If you prefer publishing the app, set the company domain and click on Finish.

Add Dart Dependencies to Your Project

To use Contentstack's Dart SDK in your existing project, you need to add the following code within your pubspec.yaml file:

dependencies:

  contentstack: any

You can download the latest dependency version here.

Quickstart in 5 mins

Initializing your SDK

Contentstack offers six regions North America (NA), Europe (EU), Azure North America (AZURE_NA), Azure Europe (AZURE_EU), GCP North America (GCP_NA), and GCP Europe (GCP_EU) as data centers to store customers' account details and data. These regions are independent of each other and therefore have a dedicated set of instructions to use SDKs offered by Contentstack.

To use SDKs for the Europe, Azure NA, Azure EU region, GCP NA, or GCP EU you will have to make certain changes in the configuration of the SDK, as detailed below, and the rest of the instructions remain the same.

Add this to your package's pubspec.yaml file:

dependencies:

   contentstack: ^any

To initialize the SDK, enter the stack’s API key, delivery token, and environment name where you will publish the content, as shown in the snippet below:

import 'package:contentstack/contentstack.dart' as contentstack;

final stack = contentstack.Stack(apiKey, deliveryToken, environment, region: contentstack.Region.<add_your_region>);

Note By default, the SDK uses the North American region. Configuration changes are not required for North American region users.

Refer the below code if you want to use the Europe, Azure North America, Azure Europe, GCP North America region, or GCP Europe.

import 'package:contentstack/contentstack.dart' as contentstack;

final stack = contentstack.Stack(apiKey, deliveryToken, environment, region: contentstack.Region.<add_your_region>);

Once you have initialized the SDK, you can query entries to fetch the required content.

For Setting the branch for Europe, Azure North America, Azure Europe, GCP North America, or GCP Europe refer the code below:

For Setting Branch

import 'package:contentstack/contentstack.dart' as contentstack;

final stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment', branch: 'branch');

Basic Queries

Contentstack SDKs let you interact with the Content Delivery APIs and retrieve content from Contentstack. They are read-only in nature. The SDKs fetch and deliver content from the nearest server via Fastly, our powerful and robust CDN.

Get a Single Entry

To retrieve a single entry from a content type, use the code snippet given below:

import contentstack


stack = contentstack.Stack(api_key='api_key', delivery_token='delivery_token', environment='environment')

contentType = stack.content_type("content_type_uid")

entry = content_type.entry("entry_uid")

response = entry.fetch()

Get Multiple Entries

To retrieve multiple entries of a particular content type, use the code snippet given below:

import contentstack


stack = contentstack.Stack(api_key='api_key', delivery_token='delivery_token', environment='environment')

query = stack.content_type("content_type_uid").query()

response = query.find()

Pagination

In a single instance, the Get Multiple Entries query will retrieve only the first 100 items of the specified content type. You can paginate and retrieve the rest of the items in batches using the skip and limit parameters in subsequent requests.

final stack = contentstack.Stack( "apiKey", "deliveryToken", "environment"); 

final query = stack.contentType("contentTypeUid").entry().query().skip(20).limit(20);

await query.find().then((response){

   print(response);

}).catchError((onError){

   print(onError.message);

});

Stack

Stack an instance of ContentType, asset, assetQuery, and sync

syncToken

In this API request, you need to provide the sync_token that you received in the last complete sync process. If there are more than 100 records, you will get a pagination_token instead

Name	Type	Description
syncToken	String	sync token fetches only the content that was added after your last sync

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var response = stack.syncToken("syncToken")

sync

The Sync API takes care of syncing your Contentstack data with your app and ensures that the data is always up-to-date by providing delta updates.

Name	Type	Description
contentTypeUid	String	content type UID. e.g., products This retrieves published entries of specified content type.
fromDate	String	Enter the start date. e.g., 2018-08-14T00:00:00.000Z This retrieves published entries starting from a specific date
locale	String	Enter locale code. e.g., en-us This retrieves published entries of the specific locale
publishType	PublishType	Applicable values are: entry_published asset_published entry_unpublished asset_unpublished entry_deleted asset_deleted content_type_deleted If you do not specify any value, it will bring all published entries and published assets.

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var response = stack.sync("contentTypeUid", "fromDate", "locale", PublishType.Entry_Published)

setHost

Adds host for the request

Name	Type	Description
host (required)	String	The host for the API url

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

stack.setHost("host")                                                                        </span>

setHeader

adds header using header key and value

Name	Type	Description
key (required)	String	The header key
value (required)	String	the header value

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

stack.setHeader("headerKey", "headerValue")                                                                        </span>

removeHeader

Remove header using headerKey

Name	Type	Description
headerKey (required)	String	The header key

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

stack.removeHeader("headerKey")                                                                        </span>

paginationToken

If the result of the initial sync (or subsequent sync) contains more than 100 records, the response would be paginated. It provides pagination token in the response. However, you do not have to use the pagination token manually to get the next batch, the SDK does that automatically until the sync is complete. Pagination token can be used in case you want to fetch only selected batches. It is especially useful if the sync process is interrupted midway (due to network issues, etc.). In such cases, this token can be used to restart the sync process from where it was interrupted.

Name	Type	Description
paginationToken (required)	String	The pagination token

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var response = stack.paginationToken("paginationToken")                                                                        </span>

imageTransform

The Image Delivery API is used to retrieve, manipulate and/or convert image files of your Contentstack account and deliver it to your web or mobile properties.

Name	Type	Description
imageUrl (required)	String	Base Image Url of the image you want to manipulate

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var image = stack.


                                                                         </span>

getContentTypes

ContentType accepts contentTypeId in as the parameter

Name	Type	Description
queryParams (required)	Map	ContentType accepts query params as parameter

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var contentType = stack.

contentType

ContentType accepts contentTypeId in as the parameter

Name	Type	Description
contentTypeId (required)	String	ContentType accepts contentTypeId as the parameter

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var contentType = stack.contentType("contentTypeId")

assetQuery

It also returns the content of each asset in JSON format.

Name	Type	Description
uid (required)	String	Asset uid

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var assets = stack.assetQuery()

asset

This call fetches the latest version of a specific. asset of a particular stack.

Name	Type	Description
uid (required)	String	Asset uid

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var asset = stack.asset("uid")

getLivePreview

Live preview of the stack

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var preview = stack.getLivePreview

host

host of the stack

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var host = stack.host

environment

environment of the stack

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var environment = stack.environment

endpoint

endpoint for the api

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var endpoint = stack.endpoint

deliveryToken

delivery token for the stack

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

var deliveryToken = stack.deliveryToken

stack

an instance of the stack

Name	Type	Description
apiKey (required)	String	apiKey of the stack
deliveryToken (required)	String	Delivery Token for the stack
environment (required)	String	Environment of the stack
apiVersion	String	apiVersion is version of the API Default: v3
region	Region	DB region for your stack. You can choose from six regions namely, NA, EU, Azure NA, Azure EU, GCP NA, and GCP EU. Default: Region.US
host	String	host of the api Default: cdn.contentstack.io
livePreview	dict	live preview for the stack Default: {}
client	BaseClient	Client to make API request

import Contentstack


final stack = contentstack.Stack(apiKey, deliveryToken, environment);

apiKey

apiKey of for the stack

import Contentstack


final stack = contentstack.Stack("

", "

", "

");

var apiKey = stack.apiKey

Asset

The asset provides asset methods

version

Specify the version number of the asset that you wish to retrieve. If the version is not specified, the details of the latest version will be retrieved..

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final asset = stack.asset("assetUid")..version();

includeFallback

Retrieve the published content of the fallback locale if an entry is not localized in specified locale.

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final asset = stack.asset("assetUid")..includeFallback();

includeDimension

include the dimensions (height and width) of the image in the response. Supported image types: JPG, GIF, PNG, WebP, BMP, TIFF, SVG, and PSD.

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final asset = stack.asset("assetUid")..includeDimension();

environment

To fetch the content based on specific environment

Name	Type	Description
environment (required)	String	The environment

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

AssetQuery

The AssetQuery provides query on assets

includeBranch

Included branch in the response.

import contentstack
final var stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment');
final asset = stack.assetQuery()..includeBranch();

version

Specify the version number of the asset that you wish to retrieve.

import contentstack
final var stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment');
final asset = stack.assetQuery()..version(3);

relativeUrls

includes the relative URLs of the assets in the response

import contentstack
final var stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment');final asset = stack.assetQuery()..relativeUrls();

includeFallback

Retrieve the published content of the fallback locale if an entry is not localized in specified locale.

import contentstack

final var stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment');
final asset = stack.assetQuery()..includeFallback();

includeDimension

include the dimensions (height and width) of the image in the response.

import contentstack

final var stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment');final asset = stack.assetQuery()..includeCount();

includeCount

To retrieve the count of entries.

import contentstack
var stack = contentstack.Stack('apiKey', 'deliveryToken', 'environment');final asset = stack.assetQuery()..includeCount();

environment

Enter the name of the [environment] if you wish to retrieve the assets published in a particular environment.

Name	Type	Description
environment (required)	String	The Environment

import Contentstack


final stack = final contentType = stack.contentType(“content_type_uid”);

final asset = stack.assetQuery()..environment();

ImageTransformation

ImageTransformation provides Query on image URL

brightness

The brightness parameter allows you to increase or decrease the intensity with which an image reflects or radiates perceived ligh.

Name	Type	Description
brightness (required)	int	you can also define brightness using any decimal number

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final imageTransformation = stack.imageTransform(imageUrl).brightness(3)

blur

The blur parameter allows you to decrease the focus and clarity of a given image. To specify the extent to which you need to increase the blurriness of an image, use any decimal number (float) between 1 and 1000.

Name	Type	Description
blur (required)	int	It can accept hexadecimal, combination of (Red, Blue, Green) and (Red, Blue, Green, Alpha)

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final imageTransformation = stack.imageTransform(imageUrl).bgBolor('Red')

bgColor

he bg-color function lets you set a backgroud color for the given image. This is useful when applying padding or for replacing the transparent pixels of an image..

Name	Type	Description
bgColor	String	It can accept hexadecimal, combination of (Red, Blue, Green) and (Red, Blue, Green, Alpha)

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final imageTransformation = stack.imageTransform(imageUrl).bgBolor('Red')

auto

Specify the version number of the asset that you wish to retrieve. If the version is not specified, the details of the latest version will be retrieved.

Name	Type	Description
auto	String	auto parameter is set to webp
format	String	The format

import contentstack;


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final imageTransformation = stack.imageTransform(imageUrl).auto(auto: 'webp', format: 'pjpg')

ContentType

Content provides an instance of and entry and query

fetch

This call returns information of a specific content type. It returns the content type schema, but does not include its entries.

Name	Type	Description
queryParams	Map<String, dynamic>	The Query Parameters

import Contentstack


final stack = final contentType = stack.contentType(“content_type_uid”);

final Map queryParameter = {"key": "value"};

queryParameter[“include_snippet_schema”] = true;

queryParameter[“limit”] = 3;

final response = contentType.fetch(queryParameter);

entry

This function provide option to get single entry as well as all the entries

Name	Type	Description
entry_uid	String	the entry uid

import Contentstack

final stack = contentstack.Stack('apiKey','deliveryToken','environment');

final contentType = stack.contentType();

final entry = contentType.entry(entryUid: 'entry_uid');

find

This call returns comprehensive information of all the content types available in a particular stack in your account.

Name	Type	Description
queryParam	Map<String, String>	Query parameters

import Contentstack

final stack = contentstack.Stack('apiKey','deliveryToken','environment');

final contentType = stack.contentType().query();

var response = contentType.find();

includeGlobalField

This method includes the Global field's schema along with the content type schema.

import Contentstack

final stack = contentstack.Stack('apiKey','deliveryToken','environment');

final contentType = stack.contentType().query();

contentType.includeGlobalField()

includeCount

This method includes the includeCount method facilitate to find the total count of content types available in your stack.

import Contentstack


final stack = contentstack.stack("apiKey", "delieveryToken", "environment")

final entry = stack.contentType("contentType").entry("uid");

entry.includeCount();

Entry

The Entry provides data based on entry uid

only

Specifies an array of only keys in BASE object that would be included in the response.

Name	Type	Description
fieldUid (required)	List<String>	The field uid is list of string

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.only(fieldUid);

locale

This method also includes the content type UIDs of the referenced entries returned in the response.

Name	Type	Description
locale (required)	String	The locale code

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.locale('en-eu');

includeReferenceContentTypeUID

This method also includes the content type UIDs of the referenced entries returned in the response.

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.includeReferenceContentTypeUID();

includeReference

Include Reference: When you fetch an entry of a content type that has a reference field, by default, the content of the referred entry is not fetched. It only fetches the UID of the referred entry, along with the content of the specified entry.

Name	Type	Description
referenceFieldUid (required)	String	referenceFieldUid Key who has reference to some other class object
includeReferenceField	Include	includeReference provides three options, none, only and except

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.includeReference("referenceFieldUid", IncludeReference.none(fieldUidList: null));

includeBranch

Includes branch in the response

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.includeBranch();

includeEmbeddedItems

Include Embedded Objects (Entries and Assets) along with entry/entries details

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.includeEmbeddedItems();

includeFallback

Retrieve the published content of the fallback locale if an entry is not localized in specified locale.

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.includeFallback();

includeContentType

Include Content Type of all returned objects along with objects themselves

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.includeContentType();

except

Specifies list of field uids that would be excluded from the response.

Name	Type	Description
fieldUid (required)	List<String>	field uid which get excluded from the response

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.except(fieldUid); //

addParam

This method adds key and value to an Entry.

Name	Type	Description
key (required)	String	The key as string which needs to be added to an Entry
value (required)	String	The value as string which needs to be added to an Entry

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final entry = stack.contentType('contentType').entry("uid");

entry.addParam(key, value);

Query

The Query provides entries based on queries applied

where

Get entries containing the field values matching the condition in the query.

Name	Type	Description
fieldUid (required)	String	The field uid
queryOperation (required)	QueryOperation	The QueryOperation

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.where("fieldUid", QueryOperation);

skip

The number of objects to skip before returning any.

Name	Type	Description
skipCount (required)	Int	No of objects to skip from returned objects

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.skip(4);

query

Add a custom query against specified key.

Name	Type	Description
key (required)	String	key for the query
value (required)	String	value for the query

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.addQuery("param_key", "param_value");

param

This method adds key and value to an Entry.

Name	Type	Description
key (required)	String	key by which you can sort the results in descending order
value (required)	String	value of the param against the key

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.param("Key", "Value");

orderByDescending

Sort the results in descending order with the given key.

Name	Type	Description
key (required)	String	key by which you can sort the results in descending order

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.orderByDescending("descendingKey");

orderByAscending

sort the results in ascending order with the given key.

Name	Type	Description
key (required)	String	key by which you can sort the results in ascending order

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.ascending("ascKey");

limit

A limit on the number of objects to return.

Name	Type	Description
limitCount (required)	int	the count you want to limit your response

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.limit(2);

addQuery

Add a custom query against specified key. parameters The key and value pair that will be added to the Query

Name	Type	Description
parameters (required)	Map	comma-separated string value

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.addParams("keyword1", "keyword2", "keyword3");

addParams

This method adds key and value to the Query as Query parameter.

Name	Type	Description
key (required)	String	Key of the query parameter
value (required)	String	Value of the Query parameter against the key

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('contentType').entry().query();

query.addParam("Key", "Value")

includeBranch

includes branch in the response

import Contentstack


final stack = contentstack.stack(apiKey, delieveryToken, environment)

final query = stack.contentType('room').entry().query();

query.includeBranch()

whereReference

Get entries having values based on referenced fields This query retrieves all entries that satisfy the query conditions made on referenced fields.

Name	Type	Description
referenceUid (required)	String	The referenced uid
reference (required)	QueryReference	It accepts Enum type QueryReference.include() OR QueryReference.NotInclude() and it accepts instance of Query

import Contentstack

final query = stack.contentType('room').entry().query();

query.referenceSearch('fieldUid', QueryReference.include(query: query));

  await query.find().then((response){

    print(response);

});

setHeader

adds header to the request

Name	Type	Description
key (required)	String	key of the header
value (required)	String	value of the header against the key

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.setHeader("key", "value")

removeHeader

Removed header from the request by key

Name	Type	Description
key (required)	String	key of the header

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.removeHeader("key")

operator

entries that satisfy at least one of the given conditions provided

Name	Type	Description
listOfQuery (required)	QueryOperator.and(queryObjects: List<Query>)	QueryOperator using and/or functions that accepts list of queries

import Contentstack

final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");final query = stack.contentType('contentTypeUid').entry().query();query.operator(QueryOperator.OR);

final stackInstance1 = Credential.stack(); final queryBase1 = stackInstance1.contentType('room').entry().query(); queryBase1.where('title', QueryOperation.equals(value: 'Room 13')); 

final stackInstance2 = Credential.stack(); final queryBase2 = stackInstance2.contentType('room').entry().query(); queryBase2.where('attendee', QueryOperation.equals(value: 20)); 

final List listOfQuery = [queryBase1, queryBase2]; 

query.operator(QueryOperator.or(queryObjects: listOfQuery));

await query.find().then((response)

{ 

  print(response.toString()); 

}).catchError((onError){ 

  print(onError); 

});

only

provides data that contains only mentinoed keywords

Name	Type	Description
fieldUid (required)	List<String>	Array of the only reference keys to be included in response

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.only(fieldUid);

locale

[locale] is the code of the language in which the entries need to be included.

Name	Type	Description
locale (required)	String	[locale] is code of the language of which the entries needs to be included.

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.locale("locale_code");

includeReferenceContentTypeUID

This method also includes the content type UIDs of the referenced entries returned in the response

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.includeReferenceContentTypeUID();

includeReference

When you fetch an entry of a content type that has a reference field, by default, the content of the referred entry is not fetched. It only fetches the UID of the referred entry, along with the content of the specified entry

Name	Type	Description
referenceFieldUid (required)	String	Key who has reference to some other class object
includeReferenceField	IncludeReference	provides three options, none, only and except i.e accepts list of fieldUid

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.includeReference("referenceFieldUid", IncludeReference.except(fieldUidList: fieldUid));;

includeEmbeddedItems

Include Embedded Objects (Entries and Assets) along with entry/entries details

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.includeEmbeddedItems();

includeFallback

Retrieve the published content of the fallback locale if an entry is not localized in specified locale.

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.includeFallback();

includeContentType

Include Content Type of all returned objects along with objects

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.includeContentType();

except

Specifies list of field uids that would be excluded from the response. [fieldUid] field uid which get excluded from the response.

Name	Type	Description
fieldUid (required)	List<String>	fieldUid is String type of List

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

query.except(fieldUid);

addParam

This method adds key and value to an Entry.

Name	Type	Description
key (required)	String	key of the parameter
value (required)	String	value of the param against the key

import Contentstack


final stack = contentstack.Stack("apiKey", "deliveryToken", "environment");

final query = stack.contentType('contentTypeUid').entry().query();

entry.addParam("key", "value");