有趣的DatabaseError

Question

请任何人能告诉我，为什么我得到这个消息时，保存这个模型在下面，我看了看，并发现有类似的问题，但许多解决方案的人。

Exception Type:     DatabaseError
Exception Value: value too long for type character varying(10)
Exception Location: /usr/local/lib/python2.7/dist-packages/django/db/backends/postgresql_psycopg2/base.py in execute, line 52


class Stylesheet(models.Model): 
    text_color = models.CharField(max_length = 50,default = '#000')
    a_visited = models.CharField(max_length = 50,default = '#000')
    background = models.CharField(max_length = 50,default = '#000')
    content_background_color = models.CharField(max_length = 50,default= '#000')
    nav_color = models.CharField(max_length = 50,default = '#000')
    nav_background = models.CharField(max_length = 50,default = '#000')
    nav_gradient_start = models.CharField(max_length = 50,default = '#000')
    nav_gradient_end = models.CharField(max_length = 50,default = '#000')
    nav_a_color = models.CharField(max_length = 50,default = '#000')
    nav_a_hover_color = models.CharField(max_length = 50,default = '#000')
    nav_a_hover_background = models.CharField(max_length = 50,default = '#000')
    nav_a_hover_gradient_start = models.CharField(max_length = 50,default = '#000')
    nav_a_hover_gradient_end = models.CharField(max_length = 50,default = '#000')
    slug = models.SlugField(max_length = 255,blank=True,null = True,editable=False)

    class Meta:
            db_table = 'stylesheet'
            verbose_name = 'Style sheet'
            verbose_name_plural = 'Style sheets'

    def __unicode__(self):
            return self.slug

    def save(self):                   
            super(Stylesheet, self).save()

Answer 1

您的应用程序中的哪一行是第52行？

问题似乎是，您在数据库字段上设置了10个字符的限制，并且试图向其传递一个大于10的值

有关更多信息，请参阅此SO问题Strange PostgreSQL "value too long for type character varying(500)"