Interceptor

grails.artefact.Interceptor

All Implemented Interfaces and Traits:

DataBinder, RequestForwarder, ResponseRedirector, ResponseRenderer, ServletAttributes, WebAttributes, org.springframework.core.Ordered
```
@groovy.transform.CompileStatic
trait Interceptor
```
An interceptor can be used to intercept requests to controllers and URIs They replace the notion of filters from earlier versions of Grails, prior to Grails 3.0
Authors:
Graeme Rocher
Since:
3.0

Properties Summary

Properties
Type	Name and description
`java.util.Collection<Matcher>`	`matchers` The matchers defined by this interceptor
`java.util.Map<java.lang.String, java.lang.Object>`	`model`
`org.springframework.web.servlet.ModelAndView`	`modelAndView`
`int`	`order` The order the interceptor should execute in
`java.lang.String`	`view`

Methods Summary

Methods
Type Params	Return Type	Name and description
	`boolean`	`after()` Executed after the action executes but prior to view rendering
	`void`	`afterView()` Executed after view rendering completes
	`boolean`	`before()` Executed before a matched action
	`boolean`	`doesMatch()` @return Whether the current interceptor does match
	`boolean`	`doesMatch(javax.servlet.http.HttpServletRequest request)` @return Whether the current interceptor does match
	`java.util.Map<java.lang.String, java.lang.Object>`	`getModel()` @return The current model
	`org.springframework.web.servlet.ModelAndView`	`getModelAndView()` Obtains the ModelAndView for the currently executing controller
	`java.lang.Throwable`	`getThrowable()` Obtains the exception thrown by an action execution
	`java.lang.String`	`getView()` @return The current view
	`void`	`header(java.lang.String headerName, java.lang.Object headerValue)` Sets a response header for the given name and value
	`Matcher`	`match(java.util.Map arguments)` Used to define a match.
	`Matcher`	`matchAll()` Matches all requests
	`void`	`render(java.util.Map argMap)` Overridden render method that renders the view directly inside before()
	`void`	`setModel(java.util.Map<java.lang.String, java.lang.Object> model)` Sets the model
	`void`	`setModelAndView(org.springframework.web.servlet.ModelAndView mav)` Sets the ModelAndView of the current controller
	`void`	`setView(java.lang.String view)` Sets the view name

- Property Detail
  - final java.util.Collection<Matcher> matchers
    
    The matchers defined by this interceptor
  - java.util.Map<java.lang.String, java.lang.Object> model
  - org.springframework.web.servlet.ModelAndView modelAndView
  - int order
    
    The order the interceptor should execute in
  - java.lang.String view
- Method Detail
  - boolean after()
    
    Executed after the action executes but prior to view rendering
    Returns:
    True if view rendering should continue, false otherwise
  - void afterView()
    
    Executed after view rendering completes
    Parameters:
    t - The exception instance if an exception was thrown, null otherwise
  - boolean before()
    
    Executed before a matched action
    Returns:
    Whether the action should continue and execute
  - boolean doesMatch()
    
    Returns:
    Whether the current interceptor does match
  - boolean doesMatch(javax.servlet.http.HttpServletRequest request)
    
    Returns:
    Whether the current interceptor does match
  - java.util.Map<java.lang.String, java.lang.Object> getModel()
    
    Returns:
    The current model
  - org.springframework.web.servlet.ModelAndView getModelAndView()
    
    Obtains the ModelAndView for the currently executing controller
    Returns:
    The ModelAndView
  - java.lang.Throwable getThrowable()
    
    Obtains the exception thrown by an action execution
    Parameters:
    t - The exception or null if none was thrown
  - java.lang.String getView()
    
    Returns:
    The current view
  - void header(java.lang.String headerName, java.lang.Object headerValue)
    
    Sets a response header for the given name and value
    Parameters:
    headerName - The header name
    headerValue - The header value
  - Matcher match(java.util.Map arguments)
    
    Used to define a match. Example: match(controller:'book', action:'*')
    Parameters:
    arguments - The match arguments
  - Matcher matchAll()
    
    Matches all requests
  - void render(java.util.Map argMap)
    
    Overridden render method that renders the view directly inside before()
    Parameters:
    argMap
  - void setModel(java.util.Map<java.lang.String, java.lang.Object> model)
    
    Sets the model
    Parameters:
    model - The model to set
  - void setModelAndView(org.springframework.web.servlet.ModelAndView mav)
    
    Sets the ModelAndView of the current controller
    Parameters:
    mav - The ModelAndView
  - void setView(java.lang.String view)
    
    Sets the view name
    Parameters:
    view - The name of the view

Summary:
Property
Method

| Detail:
Property
Method

[Groovy] Trait Interceptor

Properties Summary

Methods Summary

Property Detail

final java.util.Collection<Matcher> matchers

java.util.Map<java.lang.String, java.lang.Object> model

org.springframework.web.servlet.ModelAndView modelAndView

int order

java.lang.String view

Method Detail

boolean after()

void afterView()

boolean before()

boolean doesMatch()

boolean doesMatch(javax.servlet.http.HttpServletRequest request)

java.util.Map<java.lang.String, java.lang.Object> getModel()

org.springframework.web.servlet.ModelAndView getModelAndView()

java.lang.Throwable getThrowable()

java.lang.String getView()

void header(java.lang.String headerName, java.lang.Object headerValue)

Matcher match(java.util.Map arguments)

Matcher matchAll()

void render(java.util.Map argMap)

void setModel(java.util.Map<java.lang.String, java.lang.Object> model)

void setModelAndView(org.springframework.web.servlet.ModelAndView mav)

void setView(java.lang.String view)