python - Django Tutorial: Where does the other objects come from? -


i have been reading , following django tutorial https://docs.djangoproject.com/en/1.3/intro/tutorial01/ running django 1.3.1, , python 2.7.3 on xubuntu 12.04 lts virtual machine 512 mb ram if matters.

actually found exact question, reference seems out of date. have viable link reference? where 'article_set' come in django?

thank in advance.

django foreignkey lookups establish relations between related objects. these relations added dynamically accessors suffixed _set 

def get_accessor_name(self):     # method encapsulates logic decides name give     # accessor descriptor retrieves related many-to-one or     # many-to-many objects. uses lower-cased object_name + "_set",     # can overridden "related_name" option.     if self.field.rel.multiple:         # if symmetrical m2m relation on self, there no reverse accessor.         if getattr(self.field.rel, 'symmetrical', false) , self.model == self.parent_model:             return none         return self.field.rel.related_name or (self.opts.object_name.lower() + '_set')     else:         return self.field.rel.related_name or (self.opts.object_name.lower())

code in django sources (models/related.py)


Comments

Post a Comment

Popular posts from this blog

c# - Send Image in Json : 400 Bad request -

from android trying send image class of data, iis webservice. (c#) the problem 400 bad request . the image being encoded base64 . , placed json rest of class elements. my guess base64 not valid inside json. server not understand it. if set string "" , post accepted fine. so question is, how make base64 valid within json array? ( tried url.encode no success). or how should send image android webservice? gson gson = new gson(); string json = gson.tojson(record); // record has param { string base64photo } how big image? i'm pretty sure surpassing iis json size limit (default 4 mb). check http://geekswithblogs.net/frankw/archive/2008/08/05/how-to-configure-maxjsonlength-in-asp.net-ajax-applications.aspx or http://www.webtrenches.com/post.cfm/iis7-file-upload-size-limits good luck!
Read more

javascript - addthis share facebook and google+ url -

i attempting use addthis create simple url shares whichever current page user on when click share button. of right now, have twitter working. when user clicks, able see url populated in tweet box. when user clicks facebook or google+, url doesn't seem show in share box. <ul class="addthis_toolbox addthis_default_style "> <li><a class="addthis_button_facebook"><img src="/img/facebook-social.png" width="20" height="20" border="0" alt="share" /></a></li> <li><a class="addthis_button_twitter"><img src="/img/twitter-social.png" width="20" height="20" border="0" alt="share" /></a></li> <li><a class="addthis_button_google_plusone_share"><img src="/img/google-social.png" width="20" height="20" border="0" alt="s
Read more

ios - Show keyboard with UITextField in the input accessory view -

i have buttona , when buttona clicked, want keyboard show uitextfield in inputaccessoryview. there way have keyboard show manually , set inputaccessoryview without having uitextfield initially? thanks. you cannot summon keyboard without object can become first responder. there 2 ways work around: subclass uiview , implement uikeyinput protocol in it. example: in .h file: @interface inputobject : uiview<uikeyinput> @property (nonatomic, copy) nsstring *text; @property (nonatomic, strong) uiview *inputaccessoryview; // must override inputaccessoryview , since it's readonly default @end in .m file, implement protocol: - (bool)canbecomefirstresponder { return yes; } - (bool)hastext { return [self.text length]; } - (void)inserttext:(nsstring *)text { nsstring *selftext = self.text ? self.text : @""; self.text = [selftext stringbyappendingstring:text]; [[nsnotificationcenter defaultcenter] postnotificationname:kinputobjec
Read more