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# action

Please make sure you have read the Tag Syntax document and understand how tag attribute syntax works.

## Description

Execute an action from within a view

Parameters can be passed to the action using nested param tags.

## Placement in context

The action will not be published to the context until the whole tag is evaluated, meaning that inside the body of the tag, the action cannot be accessed, For example:

    <s:action var="myAction" name="MyAction" namespace="/">
        Is "myAction" null inside the tag? <s:property value="#myAction == null" />
    </s:action>
        Is "myAction" null outside the tag? <s:property value="#myAction == null" />

Will print:

    Is "myAction" null inside the tag? true

    Is "myAction" null outside the tag? false

Execute an action from within a view

## Attributes

#### Dynamic Attributes Allowed: false
#### Name | #### Required | #### Default | #### Evaluated | #### Type | #### Description
--- | --- | --- | --- | --- | ---
executeResult | false | false | false | Boolean | Whether the result of this action (probably a view) should be executed/rendered
flush | false | true | false | Boolean | Whether the writer should be flush upon end of action component tag, default to true
ignoreContextParams | false | false | false | Boolean | Whether the request parameters are to be included when the action is invoked
name | true |  | false | String | Name of the action to be executed (without the extension suffix eg. .action)
namespace | false | namespace from where tag is used | false | String | Namespace for action to call
performClearTagStateForTagPoolingServers | false | false | false | Boolean | Whether to clear all tag state during doEndTag() processing (if applicable)
rethrowException | false | false | false | Boolean | Whether an exception should be rethrown, if the target action throws an exception
var | false |  | false | String | Name used to reference the value pushed into the Value Stack (scope: action).

## Examples

     public class ActionTagAction extends ActionSupport {

      public String execute() throws Exception {
          return "done";
      }

      public String doDefault() throws Exception {
          ServletActionContext.getRequest().setAttribute("stringByAction", "This is a String put in by the action's doDefault()");
          return "done";
      }
     }

       <struts>
          ....
         <action name="actionTagAction1" class="tmjee.testing.ActionTagAction">
             <result name="done">success.jsp</result>
         </action>
          <action name="actionTagAction2" class="tmjee.testing.ActionTagAction" method="default">
             <result name="done">success.jsp</result>
         </action>
          ....
       </struts>

The following action tag will execute result and include it in this page

      <s:action name="actionTagAction" executeResult="true" />

The following action tag will do the same as above, but invokes method specialMethod in action</span>

      <s:action name="actionTagAction!specialMethod" executeResult="true" />

The following action tag will not execute result, but put a String in request scope under an id `stringByAction` which will be retrieved using property tag</span>

      <s:action name="actionTagAction!default" executeResult="false" />
      <s:property value="#attr.stringByAction" />

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