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## org.codehaus.groovy.grails.web.filters
Class HiddenHttpMethodFilter

    java.lang.Object
      org.springframework.web.filter.GenericFilterBean
          org.springframework.web.filter.OncePerRequestFilter
              org.codehaus.groovy.grails.web.filters.HiddenHttpMethodFilter

All Implemented Interfaces:
  Filter, BeanNameAware, DisposableBean, InitializingBean, ServletContextAware

    public class HiddenHttpMethodFilter

extends OncePerRequestFilter

Based off the Spring implementation, but this one works with Grails params object and also deals with the X-HTTP-Method-Override HTTP header.

Since:
  1.2
Author:
  Graeme Rocher
See Also:
  `HiddenHttpMethodFilter`

Field Summary
`static String` | `DEFAULT_METHOD_PARAM` Default method parameter: `_method`
`static String` | `HEADER_X_HTTP_METHOD_OVERRIDE`

Fields inherited from class org.springframework.web.filter.OncePerRequestFilter
`ALREADY_FILTERED_SUFFIX`

Fields inherited from class org.springframework.web.filter.GenericFilterBean
`logger`

Constructor Summary
`HiddenHttpMethodFilter()`

Method Summary
`protected void` | `doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)`
`protected String` | `getHttpMethodOverride(HttpServletRequest request)`
`void` | `setMethodParam(String methodParam)` Set the parameter name to look for HTTP methods.

Methods inherited from class org.springframework.web.filter.OncePerRequestFilter
`doFilter, getAlreadyFilteredAttributeName, shouldNotFilter`

Methods inherited from class org.springframework.web.filter.GenericFilterBean
`addRequiredProperty, afterPropertiesSet, destroy, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, initFilterBean, setBeanName, setServletContext`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### DEFAULT_METHOD_PARAM

    public static final String DEFAULT_METHOD_PARAM

  Default method parameter: `_method`

  See Also:
    Constant Field Values

### HEADER_X_HTTP_METHOD_OVERRIDE

    public static final String HEADER_X_HTTP_METHOD_OVERRIDE

See Also:
  Constant Field Values

Constructor Detail

### HiddenHttpMethodFilter

    public HiddenHttpMethodFilter()

Method Detail

### setMethodParam

    public void setMethodParam(String methodParam)

  Set the parameter name to look for HTTP methods.

  See Also:
    `DEFAULT_METHOD_PARAM`

### doFilterInternal

    protected void doFilterInternal(HttpServletRequest request,
                                    HttpServletResponse response,
                                    FilterChain filterChain)
                             throws ServletException,
                                    IOException

  Specified by:
    `doFilterInternal` in class `OncePerRequestFilter`
  Throws:
    `ServletException`
    `IOException`

### getHttpMethodOverride

    protected String getHttpMethodOverride(HttpServletRequest request)

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