Invoking component methods using a form

To invoke a method using a ColdFusion or HTML form, the following must be true:

The form or cfform tag action attribute must specify the CFC filename or path followed by ?method=methodname, where methodname is the name of the method; for example, <form action="myComponent.cfc?method=myMethod" method="POST">.
The form must have an input tag for each component method parameter. The name attribute of the tag must be the method parameter name and the field value is the parameter value.
The cffunction tag that defines the CFC method being invoked must specify the access="remote" attribute.

If the CFC method that you invoke from the form displays output directly, the user's browser shows the output. (You can use the cffunction tag output attribute to disable displaying output.) If the CFC returns a result using the cfreturn tag, ColdFusion converts the text to HTML edit format, puts it in a WDDX packet, and includes the packet in the HTML that it returns to the client.

To invoke component methods using a form:

Create a corpFind.cfm file with the following contents:

<h2>Find People</h2>
<form action="components/corpQuery.cfc?method="getEmp" method="post">
	<p>Enter employee's last Name:</p>
	<input type="Text" name="lastName">
	<input type="Hidden" name="method" value="getEmp">
	<input type="Submit" title="Submit Query"><br>
</form>

In the example, the form tag's action attribute points to the corpQuery component and invokes the getEmp method.

Create a corpQuery.cfc file, specifying access="remote" for each cffunction tag, as the following example shows:

<cfcomponent>
	<cffunction name="getEmp" access="remote">
		<cfargument name="lastName" required="true">
		<cfset var empQuery="">
		 <cfquery name="empQuery" datasource="cfdocexamples">
		 	SELECT LASTNAME, FIRSTNAME, EMAIL
		 	FROM tblEmployees
			WHERE LASTNAME LIKE '#arguments.lastName#'
		 </cfquery>
		 <cfoutput>Results filtered by #arguments.lastName#:</cfoutput><br>
		 <cfdump var=#empQuery#>
	</cffunction>
</cfcomponent>

Open a web browser and enter the following URL:
```
http://localhost/corpFind.cfm
```
ColdFusion displays the search form. After you enter values and click the Submit Query button, the browser displays the results.

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