When to use standardcontroller object in Visualforce?
StandardController objects reference the pre-built Visualforce controllers provided by Salesforce. The only time it is necessary to refer to a StandardController object is when defining an extension for a standard controller. StandardController is the data type of the single argument in the extension class constructor.
How to access data with a standard controller?
Every standard controller includes a getter method that returns the record specified by the id query string parameter in the page URL. This method allows the associated page markup to reference fields on the context record by using {!object} syntax, where object is the lowercase name of the object associated with the controller.
How is a standardcontroller used in a constructor?
The following example shows how a StandardController object can be used in the constructor for a standard controller extension: // controller. The following Visualforce markup shows how the controller extension from above can be used in a page:
How does getrecord ( ) work in Visualforce?
Returns the record that is currently in context, based on the value of the id query string parameter in the Visualforce page URL. Note that only the fields that are referenced in the associated Visualforce markup are available for querying on this SObject.
How to get field’s value from a record?
Gets a field’s value from a record. Spanning fields are supported. The field’s value is returned in its raw data form. In some cases, the raw data form differs from the display value that’s returned by getFieldDisplayValue( record, field). import { getFieldValue } from ‘lightning/uiRecordApi’; getFieldValue(record: Record, field: string)
How many fields can I get in Salesforce?
The value can be either a string or reference to a field imported from @salesforce / schema. You can specify up to 5 levels of spanning fields. For example, Opportunity. Account. CreatedBy. LastModifiedById returns 4 levels of spanning fields.