[web-devel] juliusFile in yesod 0.8 eating all memory

[Michael Snoyman]

I just released yesod-json 0.1.1, which provides the instance described by JP.

Michael

On Fri, Apr 29, 2011 at 6:11 PM, Anton Cheshkov <acheshkov at gmail.com> wrote:
> What package do need to upgrade to get away this problem ?
> Thanks.
>
> 2011/4/29 Greg Weber <greg at gregweber.info>
>>
>> As an alternative to orphan instances, given the recent refactoring it
>> should be easy to now make Julius (and Coffee) a separate package (with the
>> aeson dependency).
>> On Fri, Apr 29, 2011 at 7:45 AM, Michael Snoyman <michael at snoyman.com>
>> wrote:
>>>
>>> On Fri, Apr 29, 2011 at 5:32 PM, JP Moresmau <jpmoresmau at gmail.com>
>>> wrote:
>>> > Right, found it.
>>> >
>>> >>>> instance (ToJSON a)=> ToJavascript a where
>>> >>>>       toJavascript =toJavascript . toJSON
>>> >
>>> > That used to work but now seems to go into an infinite loop. I've
>>> > replaced it by:
>>> >
>>> > instance (ToJSON a)=> ToJavascript a where
>>> >       toJavascript =fromLazyText . decodeUtf8  . encode . toJSON
>>>
>>> Unfortunately, that's the best we can do here, since Javascript only
>>> works with Text, and aeson only works with ByteString.
>>>
>>> > and everything works again. Not very elegant, have I missed something?
>>> > Shouldn't that instance be part of Yesod somewhere? I mean if we
>>> > standardize on Aeson, and we want variables in Javascript, it makes
>>> > sense to serialize ToJSON instances in a Julius template.
>>>
>>> Good catch, it's supposed to be in yesod-json, but it's commented out
>>> right now. It was probably part of the changeover from json-types to
>>> aeson and got forgotten. I'm not a huge fan of the placement of this
>>> instance (it *is* an orphan), but the alternative is adding aeson as a
>>> dependency to hamlet.
>>>
>>> Michael
>>>
>>> > JP
>>> >
>>> > On Fri, Apr 29, 2011 at 4:06 PM, JP Moresmau <jpmoresmau at gmail.com>
>>> > wrote:
>>> >> juliusFile, I'm not running any scaffolded site, I've built everything
>>> >> with 1s and 0s. (-:
>>> >> Changing to juliusFileDebug results in the same behavior.
>>> >>
>>> >> JP
>>> >>
>>> >> On Fri, Apr 29, 2011 at 3:56 PM, Michael Snoyman <michael at snoyman.com>
>>> >> wrote:
>>> >>> Are you running juliusFile or juliusFileDebug? (The scaffolded site
>>> >>> uses the latter by default.)
>>> >>>
>>> >>> Michael
>>> >>>
>>> >>> On Fri, Apr 29, 2011 at 4:52 PM, JP Moresmau <jpmoresmau at gmail.com>
>>> >>> wrote:
>>> >>>> Hi all,
>>> >>>>
>>> >>>> I've just upgraded to Yesod 0.8. I've changed all my Strings into
>>> >>>> Texts, and all my Data.JSON.Types into Data.Aeson.Types. I use these
>>> >>>> JSON objects in julius templates, by adding the orphan instance:
>>> >>>> instance (ToJSON a)=> ToJavascript a where
>>> >>>>       toJavascript =toJavascript . toJSON
>>> >>>>
>>> >>>> (Removing that instance causes compilation error, and I had it when
>>> >>>> I
>>> >>>> was using json-types).
>>> >>>> addJulius works fine when it contains Javascript code. However on
>>> >>>> one
>>> >>>> page I use juliusFile to load an external template. This eats all my
>>> >>>> memory and never returns under Warp when I launch the compiled exe
>>> >>>> (I
>>> >>>> see "thread killed" messages in the console, though), and in GHCi
>>> >>>> crashes with "out of memory".
>>> >>>> The code hasn't changed and was working fine in yesod 0.7 before the
>>> >>>> upgrade. If I remove juliusFile the page displays instantly.
>>> >>>>
>>> >>>> Any idea? I'm a bit stumped. I suppose I'm going to remove each of
>>> >>>> my
>>> >>>> variables in the julius file to narrow it down, but if anybody has
>>> >>>> any
>>> >>>> insight...
>>> >>>>
>>> >>>> Thanks!
>>> >>>>
>>> >>>> --
>>> >>>> JP Moresmau
>>> >>>> http://jpmoresmau.blogspot.com/
>>> >>>>
>>> >>>> _______________________________________________
>>> >>>> web-devel mailing list
>>> >>>> web-devel at haskell.org
>>> >>>> http://www.haskell.org/mailman/listinfo/web-devel
>>> >>>>
>>> >>>
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> JP Moresmau
>>> >> http://jpmoresmau.blogspot.com/
>>> >>
>>> >
>>> >
>>> >
>>> > --
>>> > JP Moresmau
>>> > http://jpmoresmau.blogspot.com/
>>> >
>>>
>>> _______________________________________________
>>> web-devel mailing list
>>> web-devel at haskell.org
>>> http://www.haskell.org/mailman/listinfo/web-devel
>>
>>
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>
>
>
> --
> Best regards,
> Cheshkov Anton
> Phone: +7 909 005 18 82
> Skype: cheshkov_anton
>