github.com/iron-io/functions@v0.0.0-20180820112432-d59d7d1c40b2/examples/blog/database/post.go (about)

     1  package database
     2  
     3  import (
     4  	"errors"
     5  
     6  	"github.com/iron-io/functions/examples/blog/models"
     7  	"gopkg.in/mgo.v2"
     8  	"gopkg.in/mgo.v2/bson"
     9  )
    10  
    11  var (
    12  	ErrNotObjectIdHex = errors.New("Invalid ID")
    13  )
    14  
    15  func (db *Database) SavePost(post *models.Post) (*models.Post, error) {
    16  	s := db.Session.Copy()
    17  	defer s.Close()
    18  
    19  	c := s.DB("").C("post")
    20  
    21  	if post.ID.Hex() == "" {
    22  		post.ID = bson.NewObjectId()
    23  	}
    24  	id := post.ID
    25  
    26  	change := mgo.Change{
    27  		Update:    bson.M{"$set": post},
    28  		ReturnNew: true,
    29  		Upsert:    true,
    30  	}
    31  
    32  	_, err := c.Find(bson.M{"_id": id}).Apply(change, &post)
    33  
    34  	if err != nil {
    35  		return nil, err
    36  	}
    37  
    38  	return post, nil
    39  }
    40  
    41  func (db *Database) GetPost(id string) (*models.Post, error) {
    42  	s := db.Session.Copy()
    43  	defer s.Close()
    44  
    45  	c := s.DB("").C("post")
    46  
    47  	var post models.Post
    48  	if !bson.IsObjectIdHex(id) {
    49  		return nil, ErrNotObjectIdHex
    50  	}
    51  
    52  	err := c.Find(bson.M{"_id": bson.ObjectIdHex(id)}).One(&post)
    53  	if err != nil {
    54  		return nil, err
    55  	}
    56  
    57  	return &post, nil
    58  }
    59  
    60  func (db *Database) GetPosts(query []bson.M) ([]*models.Post, error) {
    61  	s := db.Session.Copy()
    62  	defer s.Close()
    63  
    64  	c := s.DB("").C("post")
    65  
    66  	var posts []*models.Post
    67  
    68  	err := c.Pipe(query).All(&posts)
    69  	if err != nil {
    70  		return nil, err
    71  	}
    72  	return posts, nil
    73  }