code: func Create(c *gin.Context) {
  	db := c.MustGet("db").(*mgo.Database)
  
  	article := models.Article{}
  	err := c.Bind(&article)
  	if err != nil {
  		c.Error(err)
  		return
  	}
  
  	err = db.C(models.CollectionArticle).Insert(article)
  	if err != nil {
  		c.Error(err)
  	}
  	c.Redirect(http.StatusMovedPermanently, "/articles")
  }
docs: // Create an article