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| 2010-12-01 19:27 <plantian> In order to use hgnested with hg I need to have the extension set in some hgrc file right ? | ||
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| 2010-12-01 19:54 <plantian> I figured it out, needed to put extension in home hgrc and downgrade mercurial. | ||
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| 2010-12-01 21:04 <plantian> Is the Transaction part of 1.6 or 1.8 ? | ||
| 2010-12-01 21:28 <cedk> plantian: 1.8 | ||
| 2010-12-01 21:31 <plantian> Cool thanks. The last python example seems like it should be locals().get('context', {}).get('company', 0). http://doc.tryton.org/1.6/trytond/doc/topics/pyson.html | ||
| 2010-12-01 21:32 <cedk> plantian: if context is in locals then you can get it directly | ||
| 2010-12-01 21:33 <plantian> if it is not though the statement will return False instead of 0 like it should | ||
| 2010-12-01 21:33 <plantian> where 0 is the default of the second get | ||
| 2010-12-01 21:34 <cedk> plantian: yes | ||
| 2010-12-01 21:36 <cedk> plantian: fixed | ||
| 2010-12-01 21:37 <plantian> Are python tuples/lists/dictionaries allowed such as -- PYSON, such as In(Eval('state'), ('A', 'B', 'C')) ? Seems like it should be fine. | ||
| 2010-12-01 21:38 <cedk> plantian: only dict or list | ||
| 2010-12-01 21:38 <plantian> Okay, maybe there should be a note about that? I was going to use tuple. | ||
| 2010-12-01 21:39 <plantian> Also if Eval('state') is used but state is not defined what happens? | ||
| 2010-12-01 21:40 <cedk> plantian: it will be the default value of Eval | ||
| 2010-12-01 21:41 <cedk> plantian: if you use tuple you will have an exception that will be raised | ||
| 2010-12-01 21:42 <plantian> Weird, Eval has a default... default ? | ||
| 2010-12-01 21:42 <cedk> plantian: yes it is '' | ||
| 2010-12-01 21:43 <plantian> If only I was here when that was decided. That's what I get for relaxing my involvement in the mailing list I guess. | ||
| 2010-12-01 21:43 <plantian> I think it should be an error if no default is provided. | ||
| 2010-12-01 21:43 <cedk> plantian: I don't see why | ||
| 2010-12-01 21:45 <plantian> It makes debugging difficult when typos are made or unexpected conditions are met. Php and JavaScript both suffer from that issue. | ||
| 2010-12-01 21:46 <cedk> plantian: there is cases where the field will not be there | ||
| 2010-12-01 21:47 <plantian> Yes, in those cases the developer should expect it in advance and set an explicit default. That's just been a better approach in my experience but maybe you have had a different experience. | ||
| 2010-12-01 21:48 <cedk> plantian: PYSON will be evaluated on the client, it should never fail | ||
| 2010-12-01 21:52 <plantian> Cases where the eval target is missing should be handled with explicit defaults or proper defaults provided by the calling code I would think. I understand that it should never fail, but it doesn't help people if its not working correctly because of a typo but there is not way for a developer to know until readonly content has been updated over time which finally reveals the mistake. | ||
| 2010-12-01 21:54 <cedk> plantian: we decided to never have exception in pyson evaluation because its usage is for GUI | ||
| 2010-12-01 21:55 <cedk> plantian: and also we must know what is the expected type of value return by the eval for that we need to have a default value | ||
| 2010-12-01 21:55 <plantian> Other programming failures cause error in gui though that lie in pure python, I don't understand why its different. | ||
| 2010-12-01 21:56 <cedk> plantian: because it is a statement that can be evaluated in many environement so we can not assume that we will have everything | ||
| 2010-12-01 21:56 <plantian> Having a default is fine, I meant having an implicit default I think is a bad idea. Maybe that wasn't clear. | ||
| 2010-12-01 21:56 <plantian> Eval('state') --> '' (implicit) Eval('state', '') --> explicit | ||
| 2010-12-01 21:56 <cedk> plantian: so I don't see the issue | ||
| 2010-12-01 21:56 <plantian> oops I mean Eval('state') --> '' (implicit) Eval('state', '') --> '' (explicit) | ||
| 2010-12-01 21:58 <cedk> plantian: having the default explicit doesn't help for typo | ||
| 2010-12-01 21:59 <plantian> Yeah but since most of the time there will not be a default it will catch common programming errors. | ||
| 2010-12-01 21:59 <plantian> If you don't think its a big deal then that's fine, you have more experience than I do, I was just pointing out a possible future problem. | ||
| 2010-12-01 21:59 <cedk> plantian: most of the time the default will be '' | ||
| 2010-12-01 22:00 <plantian> Are there cases where state is not defined ? | ||
| 2010-12-01 22:00 <cedk> plantian: I never got this kind of issue for now | ||
| 2010-12-01 22:00 <cedk> plantian: I don't know it is possible | ||
| 2010-12-01 22:04 <plantian> Seems like it is impossible on most models since its a Selection field. | ||
| 2010-12-01 22:05 <plantian> Anyways, it doesn't matter, thanks for help with PYSON, I have another question: Is this syntax correct, will the format be interpolated from xml before the pyson is evaluated? http://paste.pocoo.org/show/298665/ | ||
| 2010-12-01 22:06 <plantian> Actually nevermind, I think I can just get an example from the stock module. | ||
| 2010-12-01 22:07 <cedk> plantian: looks good | ||
| 2010-12-01 22:07 <plantian> I think I have extra quotes around %(stock.group_id)d though. | ||
| 2010-12-01 22:08 <plantian> oh wait man | ||
| 2010-12-01 22:08 <plantian> http://paste.pocoo.org/show/298672/ | ||
| 2010-12-01 22:08 <plantian> Was missing rest of example. | ||
| 2010-12-01 22:13 <cedk> plantian: I don't understand why you put eval arround "%(stock.group_stock)d" | ||
| 2010-12-01 22:14 <plantian> cedk: You are right. I don't think I need that. | ||
| 2010-12-01 22:19 -!- GasbaKid(~GasbaKid@41.96.112.70) has joined #tryton | ||
| 2010-12-01 22:30 <cedk> I got a patch to review for hgnested on mercurial 1.7 http://codereview.appspot.com/3381041 |
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