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# coding=utf8
from __future__ import unicode_literals, absolute_import, print_function
from django.db import models
from talos.services.tag import TagService
from .topic import Problem
class ProblemTag(models.Model):
class Meta:
app_label = 'talos'
db_table = 'api_problemtag'
problem = models.ForeignKey(Problem)
tag_id = models.IntegerField()
def __unicode__(self):
return "%s:%d" % (self.tag_id, self.problem.id)
@classmethod
def create_bind(cls, problem_id, tag_id):
topic_exists = Problem.objects.filter(id=problem_id).exists()
tag_exists = TagService.get_tag_by_tag_id(id=tag_id) is not None
if topic_exists and tag_exists:
pt = cls()
pt.problem_id = problem_id
pt.tag_id = tag_id
pt.save()
return True
else:
return False
@classmethod
def get_tag_ids_by_topic_id(cls, problem_id):
tag_ids = cls.objects.filter(problem_id=problem_id).values_list('tag_id', flat=True)
return tag_ids
class ProblemTagV3(models.Model):
class Meta:
db_table = 'api_problem_tag_v3'
app_label = "talos"
problem_id = models.IntegerField(verbose_name="帖子id", db_index=True)
tag_v3_id = models.IntegerField(verbose_name="标签V3", db_index=True)