groovy - How to access controller dynamic properties within a base controller's constructor in Grails? -

-

Actually, I want to be able to employ members in a base controller to design an object created within the filter, in which From each controller is extended. Any possible way to do this?

How I tried here, but did not get it to work.

What am I trying to achieve, expanding all of my controllers? The constructor of a base controller base controller will be used to provide value to its members, those values ​​should be Sessions will be pulled from the map. . Example below

File grails-app / controller / HomeController.groovy: 

  class HomeController BaseController extends {render def index = {username}}  < / Pre - << p> file grails-app / controller / BaseController.groovy: 
 
  abstract class BaseController {public string username public BaseController () {username = session.username}}  
 
 While running the app, the output shown is: 
 
  2010-06-15 18:17 17: 16,671 [main] error [localhost]. [/ Webapp] - exception model starts to tell listeners to send class org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener org.springframework.beans.factory.BeanCreationException event: creating bean with name 'in pluginManager' ServletContext resources Defined [/ web-INF error / ApplicationContext.xml]: invocation of init method failed; Nested exception java.lang.RuntimeException is: java.lang.RuntimeException: Because of detection manufacturer with org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass orbit parameters for class ... unable class class parameters with unable to find the manufacturer org.codehaus.groovy.grails.commons.DefaultGrailsControllerClass ... because: java.lang.reflect.InvocationTargetException ... due to: org.codehaus.groovy.grails.exceptions.NewInstanceCreationException : Could not create a new instance of the class [com.my.package.controller.HomeController]! Groovy.lang.MissingPropertyException: ... due to such a property: session to class. Com com.my.package.controller.HomeController at lt com.my.package.controller.basecontroller and; Init & gt; (BaseController.groovy: 16) at com.my.package.controller.HomeController & lt; Init & gt; (HomeController.groovy) ... 2010-06-15 18:. 17: 16,687 [main] error core.StandardContext - error listenerStart 2010-06-15 18: 17: 16,687 [main] error Korkstardcontekst - context [/ Vebppan] startup due to previous errors, failed  
 
 More apps will not run. 
 
 This is just an example of my example that I do not want to assign a username to string value, rather drag certain objects from the  session  map. Setting the  session removed  from the map are being set within the object filter. 
 
 The option I am looking at is capable of reaching the instance of the controller within the execution of the filter. Is this possible? 
 
 Please help! Thanks bunch!

You can usually do a lot in Grails artifacts in the manufacturer. You can use an interceptor for this: 

  Abstract class bas controller {protected string username username DRD before {0} =

It is described in Section 6.1.5 of


Comments

Post a Comment

Popular posts from this blog

windows - Heroku throws SQLITE3 Read only exception -

-
After I deploy the app to Heroku, I have to run migration scripts and get this error message ... ITES \ padrino \ prophetmargin & gt; Heroku Rack AR: Rack mutated! SQLite3 :: ReadOnlyException: only one try to write database to read: CREATE TABLE "schema_migrations" ( "version" varchar (255) NOT NULL) /disk1/home/slugs/215264_925fd2c_65a3/mnt/.bundle/gems/gems/ padrino-core- is 0.9.11 / lib / padrino-core / cli / rake.rb: 9: in `init ' how can this be? I also tried to run Heroku dbpush SQLite: //db/my-db.db and that did not work Horoku sqlite3 but using postgres does not do. I'm not sure why you are receiving this error, however, as I have used sqlite3 in development and when pushing it into its travel, they do some magic which migrates to postgrads. I'm absolutely sure how Heroku does 'backwash' this database but it seems that this is happening to you because it's the SQLite db file which is obviously due to Heroku's...
Read more

lex - Building a lexical Analyzer in Java -

-
I am currently learning lexical analysis in compiler design. To know how a lexical analyzer actually works, I am trying to build myself. I am planning to make it in Java The input to the lexical analyzer is a .tex file that is of the following format. \ section {script} {intro} \ section {Scope} arbitrary text \ section {relevance} uncontrolled text \ subdivision (profit) arbitrary text \ subsubsection {in real life} \ subdivision {Ingredient} \ end {document} The output of the lecture may be a table of contents with a page number in another file. 1 Introduction 1 1.1 Scope 1 1.2 Relevance 2 1.2.1 Benefits 2 1.2.1.1 Real life 2 1.2.2 loss 3 I hope that This problem is within the scope of Language Analysis Read the .exe file and check '\' and continue to check whether it is actually on search In the sectioning command is set to indicate whether or not a flag variable is the type of sectioning. I hope the above approach will work for the construction of Lexa...
Read more

python - rename keys in a dictionary -

-
I want to change the names of keys in a dictionary which are ints, and I need them so that the inputs with key zero They can sort correctly. For example, my keys are like this: '1', '101', '11' and I may need them: '001', '101', '011' What is doing, but I know that there is a better way tmpDict = {} in the ADC for the old: t MpDict ['% 04d'% int (olden)] = addict [oldkey] New controlled = tmpDict You are going wrong about this if you want to draw entries on a line in a specific way, then you have to sort on the extraction. for sorted (D, key = int): print '% s:% R'% (k, d [k])
Read more