Breeze SaveChanges partial fail -


i'm thinking @ following scenario: on client-side update 2 entities , submit post json bundle. on server side interception , apply business logic. save works 1 of entities, other 1 fails. in opinion correct solution , why: 1. should rollback , return exception on client, or 2. commit update 1st entity , return message save worked 1 of entities? know guys ideablade consider savechanges single transaction(so crud functionality goes in single post), judging think 1. should correct approach. appreciate reasoned opinions.thanks!

well depends on doing. bet save lot of time developing if roll back. if want though, can return list of failed , successful entities saved. user (assuming errors user errors) can make changes on errored entities , commit them again. may become difficult though. breeze attaches a state each entity, need need manage. on response, you'll need figure out entities failed , succeeded, update state on client, otherwise you'll resubmit commits don't need to. think better investment on time put business logic on client, roll on server (and log event can fix it) rare occasions errors occur. help?


Comments

Post a Comment

Popular posts from this blog

linux - xterm copying to CLIPBOARD using copy-selection causes automatic updating of CLIPBOARD upon mouse selection -

i've tried various ways coerce xterm (versions 285 , 292) copy selection clipboard clipboard whenever press ctrl-shift-c. promising way far has been, in ~/.xresources, put this: xterm*vt100.translations: #override \ ctrl shift <keypress> c: copy-selection(clipboard) \n\ ctrl shift <keypress> v: insert-selection(clipboard) ctrl-shift-v works perfectly, copying has nuance... if restart xterm, highlighting text puts things in primary clipboard; expected, proper, default behavior. if hit ctrl-shift-c, copies current selection clipboard clipboard. the bug, however, if highlight text after first time pressed ctrl-shift-c, you'll see highlighting copies both primary and clipboard. cannot figure out how stop xterm updating clipboard upon selection... , doesn't make sense me in first place. i said, @ specific point in time, copy selection clipboard... yet starts updating automatically upon selection after doing once... anyone have workaround...
Read more

c++ - qgraphicsview horizontal scrolling always has a vertical delta -

Image
i've subclassed qgraphicsview custom canvas used in cad application. i've reimplemented qgraphicsview::wheelevent check keyboard modifiers control key and, if control key pressed, zoom. i'm trying implement horizontal scroll when user holds shift , uses wheel. the problem i'm having horizontal scrolling always scrolls 0.279. not huge problem, hugely annoying , points else being wrong. so, here questions: is right way implement horizontal scrolling? if not, is? how eliminate delta of 0.279? thanks in advance. code , sample output below void myview::zoom(int delta) { double factor = pow(1.2, delta/abs(delta)); this->scale(factor, factor); } void myview::scrollhorizontal(int level) { qpointf center = maptoscene(viewport()->rect().center()); qdebug() << "center: " << center.x() << ", " << center.y(); centeron(qpointf(center.x() - level, center.y())); } void myview::wheelevent(qwheeleve...
Read more