Edit Field - Validate Method

Uses simple repository field and table rules to validate field

Member of Edit Field (PRIM_MD.EditField)

Parameters

Name

Type

Data Type

Description

Valid

*Result (Optional)

Boolean

Returns true if field passes the validation rules

Operation

*Input

Enumeration

The operation for the field to be validated against(insert, update and delete)

Table

*Input (Optional)

PRIM_OBJT

Table to be used for validation

Details

The Validate method allows for the use of table and field rules to be used for Edit Fields in the Visual LANSA Web runtime.

Validate operation allows for the validation usage on insert, update and deletion.

If valid is returned as false the field property HasError will be set to true.

Validating against a LANSA table requires the table name to be prefixed with '#'.

Complex logic and look up rules are not implemented for use in the validate method.

Example

This example shows the validating xEmployeeSurname against the xEmployee table for insert, update and deletion.

xEmployeeSurname uses a simple logic check to validate it is not blank.

     Begin_Com Role(*EXTENDS #PRIM_WEB) Theme(#SYS_THEME) Layoutmanager(#Layout1)
        Define_Com Class(#PRIM_TBLO) Name(#Layout1)
        Define_Com Class(#PRIM_TBLO.Row) Name(#Layout1Row1) Displayposition(1) Parent(#Layout1)
        Define_Com Class(#PRIM_TBLO.Column) Name(#Layout1Column1) Displayposition(1) Parent(#Layout1)
        Define_Com Class(#PRIM_TBLO.Item) Name(#Layout1Item1) Alignment(TopLeft) Column(#Layout1Column1) Manage(#Insert) Parent(#Layout1) Row(#Layout1Row1) Sizing(None) Flow(Down)
        Define_Com Class(#PRIM_TBLO.Item) Name(#Layout1Item2) Alignment(TopLeft) Column(#Layout1Column1) Manage(#Update) Parent(#Layout1) Row(#Layout1Row1) Sizing(None) Flow(Down)
        Define_Com Class(#PRIM_TBLO.Item) Name(#Layout1Item3) Alignment(TopLeft) Column(#Layout1Column1) Manage(#Delete) Parent(#Layout1) Row(#Layout1Row1) Sizing(None) Flow(Down)
        Define_Com Class(#PRIM_TBLO.Item) Name(#Layout1Item4) Alignment(TopLeft) Column(#Layout1Column1) Parent(#Layout1) Row(#Layout1Row1) Sizing(None) Flow(Down)
        Define_Com Class(#PRIM_TBLO.Item) Name(#Layout1Item5) Alignment(TopLeft) Column(#Layout1Column1) Manage(#EmployeeSurname) Parent(#Layout1) Row(#Layout1Row1) Sizing(None) Flow(Down) 

        Define_Com Class(#xEmployeeSurname.EditField) Name(#EmployeeSurname) Displayposition(1) Left(0) Parent(#COM_OWNER) Tabposition(1) Top(0) Width(505)
        Define_Com Class(#PRIM_MD.FlatButton) Name(#Delete) Caption('Validate on Delete') Parent(#COM_OWNER) Displayposition(4) Tabposition(4) Top(147) Left(0) Width(513)
        Define_Com Class(#PRIM_MD.FlatButton) Name(#Update) Caption('Validate on Update') Parent(#COM_OWNER) Displayposition(3) Tabposition(3) Top(111) Left(0) Width(513)
        Define_Com Class(#PRIM_MD.FlatButton) Name(#Insert) Caption('Validate on Insert') Parent(#COM_OWNER) Displayposition(2) Tabposition(2) Top(75) Left(0) Width(513) 

           Evtroutine Handling(#Insert.Click) 

              #EmployeeSurname.Validate( Insert #xEmployee ) 

           Endroutine 

           Evtroutine Handling(#Update.Click) 

              #EmployeeSurname.Validate( Update #xEmployee ) 

           Endroutine 

           Evtroutine Handling(#Delete.Click) 

              #EmployeeSurname.Validate( Delete #xEmployee ) 

           Endroutine 

     End_Com

See also

All Component Classes

Technical Reference

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