v7.3.0

DateStoreLazyLoadPlugin
Plugin

internal

Plugin for Store that handles lazy loading of stores that is dependent on the view's visible time span.

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Configs

Configs are options you supply in a configuration object when creating an instance of this class

lazyLoad : Boolean/Object

ON-OWNER
If set to true, or a config object, this makes the store load new records when needed. When a record that is not already loaded is requested, the requestData function is called. Please read the guide to learn more on how to configure lazy loading.
Parameters
- bufferUnit : DurationUnit
  
  Used together with bufferAmount to calculate the start and end dates of each load request. The value is added to the current visible start or end date. Defaults to the visible time span length.
- bufferAmount : Number
  
  See bufferUnit
- dateFormat : String
  
  The format used to convert startDate and endDate parameters passed to the load request querystring. Defaults to YYYY-MM-DD (e.g. 2024-03-11). Only used if a readUrl is configured on the store. See DateHelper for details about formatting dates.
- loadFullResourceRange : Boolean
  
  If the ResourceStore is not lazy loaded, set this to true to load events, assignments and/or resource time ranges for all resources with every load request.
- useResourceIds : Boolean
  
  Set to true to always provide resourceIds in the request params, instead of a resource startIndex and count
Has a corresponding runtime lazyLoad property.

Properties

Properties are getters/setters or publicly accessible variables on this class

isDateStoreLazyLoadPlugin : Booleantrue

READONLY

static

ADVANCED

Identifies an object as an instance of DateStoreLazyLoadPlugin class, or subclass thereof.

lazyLoad : Boolean/Object

ON-OWNER

If set to true, or a config object, this makes the store load new records when needed. When a record that is not already loaded is requested, the requestData function is called. Please read the guide to learn more on how to configure lazy loading.

Has a corresponding lazyLoad config.
isDateStoreLazyLoadPlugin : Booleantrue

READONLY

ADVANCED

Identifies an object as an instance of DateStoreLazyLoadPlugin class, or subclass thereof.

Functions

Functions are methods available for calling on the class

requestData( options )
: Promise

ASYNC

ON-OWNER
In an EventStore or ResourceTimeRangeStore which is configured with lazyLoad, the function provided here is called when a combination of the visible date range and the visible range of resources has not yet been loaded. If the ResourceStore is not configured with lazyLoad, the resource range will include all the loaded resources. When implementing this, it is expected that what is returned is an object with a data property containing the records from startDate to endDate for a range of resources starting at startIndex and with the length specified in the count param.

Base implementation does nothing, either use AjaxStore which implements it, or create your own subclass with an implementation.
```
class MyEventStore extends EventStore {
   async requestData(params){
      const response = await fetch('https://api.bryntum.com/events/?' + new URLSearchParams(params));
      return await response.json();
   }
}
```
unload( options )

ON-OWNER

Only available if the store is configured as lazyLoad.

The records matching the provided parameters will be removed from the Store and reloaded the next they are needed.

Provide an array of records or record ids, or provide a combination of resource records (or ids) and/or a date range. Do not combine the records params with the resources and startDate and endDate params.

Source path

Scheduler/data/plugin/DateStoreLazyLoadPlugin.js

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