<zg-data>

The <zg-data> tag is a web component that controls data associated to the grid. As an non-visual element, you should not apply style to this tag.

Image of the DOM relationship for the zg-data web component tag

Related Web Components

Usage

A <zg-data> tag will always be implicitly used by the grid; when using top level data and src tags, a <zg-data> is created behind the scenes.

<zing-grid src="https://cdn.zinggrid.com/datasets/user-roles.json">
</zing-grid>

The following markup is the same as the HTML above:

<zing-grid>
  <zg-data src="https://cdn.zinggrid.com/datasets/user-roles.json"></zg-data>
</zing-grid>

If you have a more complex use case that requires headers and arguments to be passed to the server containing your src, then <zg-data> and <zg-param>(s) will be used. <zg-data>should be employed and various configuration values set via the options attribute, or more appropriately, via <zg-param> tags nested within the tag.

<zing-grid 
    pager
    page-size="5"
    layout="row"
    layout-controls="disabled"
    viewport-stop>
    <zg-caption>
      ZingGrid Star Wars Server Paging
      <span class="button" id="reloadBtn">Reload Demo</span>
    </zg-caption>
    <zg-data>
      <!-- define the main source for the API -->
      <zg-param name="src" value="https://swapi.py4e.com/api/people/"></zg-param>
      
      <!-- define the path in the JSON to get the array of results. 
          In this case it is body.results -->
      <zg-param name="recordPath" value="results"></zg-param>
      
      <!-- if loadByPage is set to true it will go to the 
        server for each new page of data -->
      <zg-param name="loadByPage" value="true"></zg-param>
      
      <!-- define the "page" query parameter -->
      <zg-param name="pageKey" value="page"></zg-param>

      <!-- Need to tell ZG how many records were returned so it knows
          how to divide up the page-size -->
      <zg-param name="countPath" value="count"></zg-param>
      
      <!-- define the path in the result JSON to find next/prev urls -->
      <zg-param name="nextPath" value="next"></zg-param>
      <zg-param name="prevPath" value="previous"></zg-param>
      
    </zg-data>
    <zg-colgroup>
      <zg-column index="name"></zg-column>
      <zg-column index="height"></zg-column>
      <zg-column index="mass"></zg-column>
      <zg-column index="hair_color"></zg-column>
      <zg-column index="eye_color"></zg-column>
      <zg-column index="skin_color"></zg-column>
    </zg-colgroup>
  </zing-grid>

Attributes

There are a couple attributes for <zg-data> that are used to create adapters, parameters and arguments when fetching your data source.

Example Usage

<zing-grid>
  <zg-data src="https://cdn.zinggrid.com/datasets/user-roles.json"></zg-data>
</zing-grid>

adapter

String

Description

Adapter is a shortcut to set known options for specific third party datasets. Currently supports graphql and firebase. Developers could register their own custom adapters. For more information on custom adapters, visit Guides > ZingGrid Object > registerAdapter().

Default Value

""

Accepted Values

  • "firebase"
  • "graphql"
Demo

data

Object

Description

Data for the grid presented as an array or object. If set as an attribute value, the data needs to be in JSON format.

Default Value

""

Accepted Values

  • [{"firstName": "John", "lastName": "Doe"}]
Demo

id-key

String

Description

In the case of non-key based objects, the idKey can be set to indicate the id to send back to the datasource on CRUD commands. For example, if the READ URL was https://zinggrid-named.firebaseio.com/ then the UPDATE would be https://zinggrid-named.firebaseio.com/VALUE_OF_IDKEY.

Default Value

"id"

Accepted Values

  • "state"
Demo

options

Object

Description

Used to set <zg-param>, the configuration data for <zg-data>. This should never be used directly as an attribute and is meant for object instantiation and for setting in JavaScript.

Default Value

{}

Accepted Values

  • {"idKey":"state","sortDirKey":"_order","sortDir":"desc","sortByKey":"_sort","sortBy":"capital","src":"https://zinggrid-named.firebaseio.com/"}
Demo

src

String

Description

Specifies the absolute or relative URL to fetch data from to populate the grid.

Default Value

""

Accepted Values

  • "https://url-to-your-api"
Demo

CSS Variables

There are no CSS variables available for the <zg-data> web component.

CSS Selector

As an non-visual element, you should not apply style to this tag.