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  • 🚀Get Started
    • What is JourneyApps Platform?
    • Tutorial: Build your First App
      • 1. Introduction
      • 2. Create a new App
      • 3. OXIDE IDE Overview
      • 4. Hello World app
      • 5. The Data Model
      • 6. View Components
      • 7. Queries and Data Sync
      • 8. Simple Navigation
      • 9. View Stack
      • 10. Input Validation
      • 11. View Parameters
      • 12. Data Manipulation
      • 13. Responsive Apps
      • 14. Styling
      • 15. Lists
      • 16. GPS Capturing
      • 17. Relationships
      • 18. Multiple User Roles
      • 19. Deployment and Users
      • 20. Version Control
      • 21. CSV and APIs
      • 22. Conclusion
    • JourneyApps Platform Fundamentals
      • Creating a New App
        • Git-enabled Apps
      • What are Views?
      • What is the Data Model?
      • JourneyApps Syntax Basics
      • Access the Database (DB)
        • Manipulate DB Objects
        • Query DB Objects
      • View Navigation
        • Deep Linking
      • CloudCode Overview
      • OXIDE (Online IDE)
  • 💻Build your App
    • JourneyApps Syntax
      • Syntax Basics
      • Access the DB
      • View Navigation
      • Async & Await
      • TypeScript Apps (Beta)
        • runtime-build package
        • TypeScript App Troubleshooting
      • What's New in V4
        • Updating to the V4 API
    • Configure your Data Model
      • What is the data model?
      • Reference: model
        • field
        • belongs-to
        • has-many
        • index
      • Data Rules
        • Data Buckets
        • Sync Rules - Limit data synced to devices
        • Data ACLs - Limit access to data
        • Real-world example for Data Rules
        • ❔FAQs
        • Migrate to Data Rules
      • App Indexes
      • Webhooks
    • UI Components
      • All UI Components
        • actionSheet
        • Attachments
        • button
        • button-group
        • capture-coordinates
          • marker
          • marker-query
        • capture-file
        • capture-photo
        • capture-signature
        • card
          • accent
          • action
        • columns
          • column
        • component
        • context-menu
          • divider
          • item
        • CSV
        • date-input
        • datetime-input
        • dialog
          • body
        • display-3d-model
          • 📖display-3d-model Guides
            • Guide 1: Initialize and layout a 3D model in a view
            • Guide 2: Control playback position
            • Guide 3: Troubleshooting controls
        • display-coordinates
        • display-file
        • display-image
        • display-photo
        • display-signature
        • heading
        • html
          • HTML Advanced Topics
          • ❔HTML FAQs
          • 📖Guide: HTML & JourneyApps iFrame Client
        • icons
        • info
        • info-table
          • row
        • journey.photos (capture multiple photos)
        • JourneyPrinter (print PDFs)
        • grid
          • cell
          • 📖grid Examples
        • list
          • list-item
            • accent
            • asset
            • pills
              • pill
            • action
        • multiple-choice-checklist
        • navigation (Navigation drawer)
          • general-section
            • item
          • section
            • item
              • item
          • ❔navigation FAQs
        • notification
        • object-dropdown
        • object-list
          • action
        • object-repeat
        • object-table
          • action
          • column
            • action
            • edit-boolean
            • edit-date
            • edit-datetime
            • edit-integer
            • edit-number
            • edit-select
            • edit-text
            • edit-time
            • edit-typeahead
              • action
            • header-action
          • column-group
          • empty-action
          • 📖object-table Guides
            • Actions
            • Cell callouts
            • Column groups
            • Columns
            • Controlled object-table
            • Controls
            • Copy & paste data
            • Edit cells
            • Filters
            • Frozen columns
            • Fullscreen object-table
            • Mode
            • State
            • Styles
        • optionList
        • PhotonSync (transfer data offline)
        • power-bi
          • 📖Guide: PowerBI Embedding
        • scan-barcode
        • shortcut
        • sidebar
        • single-choice-dropdown
        • single-choice-radio
        • template
        • text-input
        • time-input
        • toggle
        • view
      • JS/TS Events
      • Show / Hide UI Components
      • View Templates
      • XML Fields (Attributes)
        • align-content
        • align-controls
        • align-label
        • bind
        • clear-button-visibility
        • control-order
        • disabled
        • error-message
        • icon-position
        • id
        • hide-if
        • modifier-text
        • label
        • label-case
        • label-color
        • on-change
        • on-press
        • placeholder
        • required
        • show-if
    • JS / TS APIs
      • Attachment
      • Bluetooth (Beta)
      • Broadcast
      • component
      • CSV
      • DB
      • HardwareBarcode
      • journey
        • journey.config
        • journey.container
        • journey.device
        • journey.diagnostics
        • journey.dialog
        • journey.files
        • journey.hardware
        • journey.photos
        • journey.runtime
        • journey.sensors
        • journey.viewStack
      • JourneyPrinter
      • KeyboardBarcode
      • LocalDB
      • NFC
      • OnlineDB
      • PhotonSync
      • SerialPort
      • ShortcutManager
      • TCPSocket
      • user
    • Extend your App with Custom Code
      • App packages
        • App packages overview
        • PDF report package
        • TypeScript library & unit tests
        • Manage External Dependencies
      • Custom HTML
    • Style & Customize your App
      • Style & configure UI components
        • Overview
        • Understand extendable themes
        • Use themes on a view
        • Theme specific components on a view
        • Examples
        • Debugging
        • ❔FAQs
      • Change your App Font
      • Custom Branding
        • Custom Container Features
        • Special Requirements for iOS Containers
    • Integrate your App
      • Backend integrations with CloudCode
      • Barcode Scanning
        • Barcode Scanning using Keyboard Emulation
        • Hardware Barcode Scanning
        • scan-barcode
      • Bluetooth Low Energy (BLE)
      • Broadcast API
      • HTTP requests (Fetch API)
      • JourneyApps Print (Android)
      • Maps and navigation
      • NFC
      • Opening external links/apps
      • Serial Port
      • TCP Sockets
    • Design Intuitive Apps
      • UX Guidelines
      • Write Effective Copy
  • 📱App Features
    • RealWear® Voice Control
      • Automatic Voice Commands
        • Automatic Voice Commands - Advanced
      • Manual Voice Commands
    • App, Runtime and Container Updates
    • Batch Operations (App)
    • Call JS/TS Functions from XML
    • Capture GPS Locations
    • Push Notifications
    • Translations
    • XML Format Strings
    • Webhooks (External)
  • 🌐CloudCode
    • CloudCode Overview
    • Trigger a CloudCode Task
      • Trigger CC with a Schedule
      • Trigger CC via a Webhook
      • Trigger CC from an App
      • Trigger CC from Another Task
      • Trigger CC via HTTP
    • Attachments in CloudCode
    • Timezones
    • Advanced CloudCode Topics
      • Access Multiple DBs in CloudCode Tasks
      • Batch API (CloudCode)
      • CloudCode Dependencies
      • Configure HTTPS in CloudCode
      • Deployment environment variables
      • Local CloudCode Development
      • PDF Reports using CloudCode
      • Shared CloudCode Tasks
      • Translations in CloudCode
  • 📥Backend API
    • Introduction
    • API Reference
      • Retrieve All Objects
      • Query Objects
      • Sort Results
      • Limit and Skip
      • Count Objects
      • Create a New Object
      • Retrieve a Single Object
      • Update a Single Object
      • Delete a Single Object
      • Batch Operations (v4 API)
      • Oplog API
      • Retrieve the App Data Model
      • Manage App Users and Sessions
      • Field Representation
      • Error Responses
    • API Limits
    • Update to the V4 API
  • ⚙️Technical
    • Data Synchronization Priority
    • Device Diagnostics
    • JSON1 Query Engine
    • Improve App Performance
    • Security Measures
    • Supported Platforms
      • Web Container
      • Windows Installer
    • Domain Whitelist
  • 🖥️OXIDE
    • Get started with OXIDE
      • OXIDE Overview
      • Components of OXIDE
    • Configure Testing Deployments
    • Edit and Manage Files
      • How to Navigate to a Function
      • Manage External Dependencies
    • Create and Manage App Containers
    • Debugging & Troubleshooting
      • Common Troubleshooting Pointers
      • App Diagnostics Reports
      • Build Logs
    • OXIDE Workspaces
      • OXIDE Trees
  • ❕Deprecated Features
    • Deprecated Features and Components
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  • Parameters
  • Response
  • Example
  1. Backend API
  2. API Reference

Retrieve the App Data Model

PreviousOplog APINextManage App Users and Sessions

Last updated 2 years ago

It is sometimes necessary to know the structure of the data that will be returned by the JourneyApps API. For example, knowing which fields to expect for certain objects.

This API function allows you to retrieve a structured representation of your app's , exactly as defined in schema.xml within OXIDE.

Relative URL
HTTP Request Method

/api/v4/backend-deployment-id/datamodel.json

GET

Parameters

This API function does not take any parameters (except for standard ETag functionality — please see below).

Response

The response will contain a list of the object types in the particular app's Data Model, with a list of fields of each object type. Relationships of the object types are also included.

The Data Model is a representation of the fields defined by the developer of the app in the app's Data Model. The JourneyApps API will also return some metadata in addition to these fields.

For example updated_at and id will be returned in JourneyApps API responses (see ).

The HTTP headers for the response also include an which allows you to keep track of versions of the Data Model. Whenever changes are made to the app's Data Model, the hash in the ETag header will change. You can include this ETag hash value with the If-None-Match header in subsequent calls to the datamodel API function. If the Data Model for the app hasn't changed, a "304 Not Modified" response code will be returned.

The response also contains a field called datamodel_hash, identifying the current version of the data model. This matches the value in the oplog.json call.

Example

BASE-URL

The below examples contain a BASE-URL placeholder. Please refer to the section to get the base URL relevant to your deployment.

GET BASE-URL/api/v4/533bda53027894f69b001055/datamodel.json
curl "BASE-URL/api/v4/533bda53027894f69b001055/datamodel.json" \
    -u "533bda53027894f69b001055:7Ajj5htRY1uzw7b4w23V"
require 'rest-client'
journey = RestClient::Resource.new "BASE-URL/api/v4", "533bda53027894f69b001055", "7Ajj5htRY1uzw7b4w23V"
journey["533bda53027894f69b001055/datamodel.json"].get

Response:

json
{
  "models": {
    "user": {
      "name": "user",
        "label": "User",
        "display": "{name}",
        "fields": {
        "name": {
          "name": "name",
            "label": "Name",
            "type": "text",
            "subtype": "name"
        }
      },
      "belongs_to": {
      },
      "has_many": {
      }
    },
    "category": {
      "name": "category",
        "label": "Category",
        "display": "{name}",
        "fields": {
        "name": {
          "name": "name",
            "label": "Name",
            "type": "text"
        }
      },
      "belongs_to": {
      },
      "has_many": {
        "tasks": {
          "model": "task",
            "name": "tasks",
            "inverse_of": "category"
        }
      }
    },
    "task": {
      "name": "task",
        "label": "Task",
        "display": "{name}",
        "fields": {
        "name": {
          "name": "name",
            "label": "Name",
            "type": "text"
        },
        "instructions": {
          "name": "instructions",
            "label": "Instructions",
            "type": "text"
        },
        "status": {
          "name": "status",
            "label": "Status",
            "type": "single-choice-integer",
            "options": [
            {
              "key": 0,
              "display": "Open"
            },
            {
              "key": 1,
              "display": "Closed"
            }
          ]
        }
      },
      "belongs_to": {
        "category": {
          "model": "category",
            "name": "category",
            "inverse_of": "tasks"
        }
      },
      "has_many": {
      }
    }
  },
  "app_user": "user",
  "datamodel_hash": "{sha}"
}
📥
Data Model
Retrieving all Objects
ETag header
HTTP Endpoints