Magento联系我们表格模板显示两次

Question

我已经覆盖了magento的默认联系我们表单，但现在表单在浏览器中加载时会显示两次。

这是我的代码：

应用程序/代码/本地/ MyCompany的/ ContactsExtension的/ etc / config.xml中

<config>
<modules>
    <MyCompany_ContactsExtension>
        <version>0.1.0</version>  
    </MyCompany_ContactsExtension>
</modules>
<frontend>
    <routers>
        <contacts>
            <args> 
                <modules> 
                    <MyCompany_ContactsExtension before="Mage_Contacts">MyCompany_ContactsExtension</MyCompany_ContactsExtension> 
                </modules> 
            </args> 
        </contacts>
    </routers>
    <layout>
        <updates>
            <contactsextension>
                <file>contactsextension.xml</file>
            </contactsextension>
        </updates>
    </layout>
</frontend>

<global>
    <blocks>
        <contactsextension>
            <class>MyCompany_ContactsExtension_Block</class>
        </contactsextension>
    </blocks>
   <helpers>
        <contactsextension>
            <class>MyCompany_ContactsExtension_Helper</class>
        </contactsextension>
    </helpers>           
</global>    
</config>

基本上，我复制了默认的contacts.xml并添加了我的更改。

应用程序/设计/前端/企业/ mytheme的/布局/ contactsextension.xml

<layout version="0.1.0">
<default>
    <reference name="footer_links">
        <action method="addLink" translate="label title" module="contacts" ifconfig="contacts/contacts/enabled"><label>Contact Us</label><url>contacts</url><title>Contact Us</title><prepare>true</prepare></action>
    </reference>
</default>

<contacts_index_index translate="label">
    <label>Contact Us Form</label>
    <reference name="head">
        <action method="setTitle" translate="title" module="contacts"><title>Contact Us</title></action>

    </reference>
    <reference name="root">
        <action method="setTemplate"><template>page/1column.phtml</template></action>
        <action method="setHeaderTitle" translate="title" module="contacts"><title>Contact Us</title></action>
    </reference>
    <reference name="content">
        <block type="core/template" name="contactForm" template="contactsextension/form.phtml">
            <block type="contactsextension/additionalfield" name="contacts.addfields" as="addfields" template="contactsextension/additionalfield.phtml" /> 
        </block>    
    </reference>
</contacts_index_index>  
</layout>