Thursday 30 September 2010

Grails & 'Grails in Action' - some notes & comments

I have just started playing with grails.
I am using 'Grails in Action' as my reference.
My current version of grails is 1.3.4
I am using the STS eclipse IDE with their built in grails plugin

Here are some initial notes on GOTCHAs I have found with the book and grails itself.
NB I will continue to update this one page with other gotchas, instaed of creating many pages.

Comments on 'Grails in Action'

1) p28, list 1.22
'render' should be 'response.outputStream <<'

2) logo.png & snazzy.css are needed for chapt 1 & can be got from github



Comments on Grails 1.3.4

1) can not create integration tests - getting error
Error executing script CreateIntegrationTest: No such property: type for class: CreateIntegrationTest
No such property: type for class: CreateIntegrationTest

edit the file scripts/CreateIntegrationTest.groovy in your grails installation
and add the line
def type = "Tests"
after the line
depends(checkVersion, parseArguments)

NB this is fixed in 1.3.5

2) when running the test via 'grails test-app' the url for the report is incorrect
and is missing the trailing 's' from the URL

edit the file scripts/_GrailsTest.groovy line 402 and add a space after the the closing brace of testReportsDir and before the double quote
msg += " - view reports in ${testReportsDir} "



3) 1.3.5 bug - add a contraint that specifies the size of the field then it does not check for null.
IE This will allow a nulll value in name:
static constraints = {
name (size:3..8)
}

The work around is to do this:


static constraints = {
name (size:3..8, blank:false)
}

bug GRAILS-6821 has been raised on version 1.3.5

4 comments:

DaveD said...

Apart from the slightly shaky quality of it's publications how are you finding Grails so far?

Bill Comer said...

only on chapt 3 but impressed with the 'Convention over Configuration'

Anonymous said...

render is correct , certainly for the version the is written at (1.1) .. Can't comment on 1.3 + ..

Bill Comer said...

perhaps it is just be Anon then, but I certainly needed to make that change. I needed to do a similar thing for p147