Technical Forum

For deleting the records, we can use the ORM function, EntityDelete(). For example, if we have an entity 'userDetails' as below: <cfcomponent persistent="true" table="Userdetails">     <cfproperty name="id" fieldType="id" ormtype="int" column="id" >     <cfproperty name="userfirstname">     <cfproperty name="userlastname">     <cfproperty name="address">     <cfproperty name="description"> </cfcomponent> For deleting the particular record, the code is given below: <cfscript> udetails= EntityLoadByPK( " Userdetails ", 1 ); EntityDelete( udetails ); </cfscript>

If we have the entity as follows; component persistent="true" table=" Userdetails" {     property name="id" fieldType="id" ormtype="int" column="id" ;     property name="userfirstname"  ;     property name="userlastname";     property name="address";     property name="description"; } For ordering the records, we can use the code as follows: <cfscript> mydetails = EntityLoad( "Userdetails", {}, "id desc" ); writeDump( mydetails); </cfscript> Output:

ORM (Object Relational Mapping ) helps us to develop applications without writing repetitive SQL statements for select, update, insert and delete operations. For configuring ORM, we should have a datasource in the server. Also we need to enable ORM in our Application.cfc file. So the Application.cfc will look like, component {        this.name = "ORMtest";   //Name of the Application        this.datasource = "DatasourceName";  //setting datasource        this.ormenabled = true;  //Enabling ORM        this.ormsettings.dbcreate = "update";  //Allows coldfusion to update database } For each tables in the database, we have to create different components or cfcs, which are called Entities. For example, if we have a table called 'Userdetails' , we can create a cfc 'userdetails.cfc', and  we need to map the objects to tables. component ...

The following code will remove the non ascii or illegal characters from a string. <cfset str=" Please enter string "> <cfset a=reReplace(str, "[^\x20-\x7E]", "", "ALL")> <cfoutput>#a#</cfoutput>