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POForeign Key with Tastypie
 

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  1. POForeign Key with Tastypie
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    <p>I have a problem like this : implement an election system of many cities .</p> <ul> <li>Each city has at most 3 candidates</li> <li>The city status is : Election Openning</li> </ul> <p>Here is my Models :</p> <pre><code>class City(models.Model): ELECTION_CLOSED = -1 ELECTION_OPENNING = 0 ELECTION_BEGIN = 1 ELECTION_STATUSES = ( (ELECTION_CLOSED,"Election closed"), (ELECTION_OPENNING,"Election Openning"), (ELECTION_BEGIN, "Election Begin"), ) city = models.ForeignKey(Location,related_name='location') president = models.ForeignKey(User,related_name='president',default=None,blank=True,null=False) election_status = models.IntegerField(choices=ELECTION_STATUSES,default=ELECTION_OPENNING) start_electing_at = models.DateTimeField(auto_now_add=True) start_president_at = models.DateTimeField(auto_now_add=True) class Candidate(models.Model): city = models.ForeignKey(Location) candidate = models.ForeignKey(User,related_name='votegame_candidate_id') num_of_votes = models.PositiveIntegerField(default=0) </code></pre> <p>And here is my Resource </p> <pre><code>class CityResource(ModelResource): city = fields.ToOneField(LocationResource, 'city') class Meta: allowed_methods = ['post','get'] queryset = City.objects.all() class CandidateResource(ModelResource): city = fields.ToOneField(LocationResource, 'city') candidate = fields.ToOneField(UserResource, 'candidate') class Meta: allowed_methods = ['post','get'] include_resource_uri = False queryset = Candidate.objects.all() always_return_data = True authentication = BasicAuthentication() authorization= Authorization() filtering = {"city": ALL } def obj_create(self, bundle, request=None, **kwargs): city_res = self.city.get_related_resource(self) print city_res.id **#######I want to check if the City status is "Election Openning" here####** userbalance,created = Balance.objects.get_or_create(user=request.user) obj = self.obj_get_list(request,city=bundle.data.get("city")) **#######I want to check if the number of Candidates in the city is now 3 here ######** try: bundle= super(CandidateResource, self).obj_create(bundle, request, user=request.user) except IntegrityError,e: print e return bundle </code></pre> <p>See my 2 problem above ? I run the POST : </p> <pre><code>curl --dump-header - -H "Content-Type: application/json" -X POST --data '{"city" : "/votegame/v1_votegame/city/123/"}' http://127.0.0.1:8000/votegame/v1_votegame/candidate/ -u summer:123456 </code></pre> <p>Problem 1: </p> #I want to check if the City status is "Election Openning" here <p>I do : <code>print city_res.id</code> , and I got <code>&lt;tastypie.fields.CharField object at 0xb50d7ecc&gt;</code></p> <p>Problem 2 :</p> #I want to check if the number of Candidates in the city is now 3 here <p>I got nothing when <code>print obj</code> But if I change to</p> <pre><code>obj = self.obj_get_list(request,city="123") </code></pre> <p>I got the list.</p> <p>Can anyone pls give me some idea. Thank you very much.</p>
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    1. USSummer Nguyen
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    1. COAnyone has idea ? Pls help. Thank you
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      1. POForeign Key with Tastypie
      1. USSummer Nguyen
 

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