如何以go（gin）形式绑定到slice值？

Using go and gin-gonic, I'd like to post a simple form containing two tag fields and then save it to mongodb.

Here is the form:

      <form action="/quotes/{{ .quote.Id.Hex }}" method="POST">    
          <input type="text" name="author" value="{{ .quote.Author }}">     
          <textarea name="body" rows="3">{{ .quote.Body }}</textarea>       

          <input name="tag" value="" >    
          <input name="tag" value="" >      

         <button type="submit">Submit</button>
  </form>

And the handler is:

func Create(c *gin.Context) {
    db := c.MustGet("db").(*mgo.Database)
    quote := models.Quote{}
    err := c.Bind(&quote)
    if err != nil {
        c.Error(err)
        return
    }

    //To debug
    fmt.Println("form post values
")
    for t, v := range c.Request.Form["tag"] {
      fmt.Println(t, v) 
    }

    //To debug
    fmt.Println(quote)

    err = db.C(models.CollectionQuote).Insert(quote)
    if err != nil {
        c.Error(err)
    }
    c.Redirect(http.StatusMovedPermanently, "/quotes")
}

Now the problem is as for form post values I get:

0 mytag1
1 mytag2

and quote details yields something like:

{ObjectIdHex("") some-author somebody [] }

The quote model is like this:

// Quote model
type Quote struct {
    Id        bson.ObjectId `json:"_id,omitempty" bson:"_id,omitempty"`
    Author     string        `json:"author" form:"author" binding:"required" bson:"author"`
    Body      string        `json:"body" form:"body" binding:"required" bson:"body"`
    Tag       []string      `json:"tag" bson:"tag"`

}

So the tag values are received but not binded. I'm wondeirng how can I fix this and get the tags from the form? I've looked at the gin guid but could not find anything about this sort of forms.

The problem was in the model struct. I forgot to add form:"tag" to the model. So the tag did not bind.