fixed #2

lib/ogp-meta.js

@@ -32,19 +32,13 @@ OpenGraph.prototype.site_name = function (site_name) {
 }
 
 OpenGraph.prototype.setObject = function (type, obj) {
-  if (typeof obj === 'string') {
-    this.meta['og:' + type] = obj
-  } else {
-    for (var prop in obj) {
-      if (obj.hasOwnProperty(prop)) {
-        this.meta[['og', type, prop].join(':')] = obj[prop]
-      }
-    }
-
-    if (obj.url) {
-      this.meta['og:' + type] = obj.url
-    }
+  // multiple value
+  var key = 'og:' + type
+  if (typeof this.meta[key] === 'undefined') {
+    this.meta[key] = []
   }
+
+  this.meta[key].unshift(obj)
 }
 
 /**
@@ -56,6 +50,11 @@ OpenGraph.prototype.setObject = function (type, obj) {
  * @param {string} image.height
  */
 OpenGraph.prototype.image = function (image) {
+  // for kakaotalk
+  if (image.url) {
+    this.setObject('image', image.url)
+  }
+
   this.setObject('image', image)
 }
 
@@ -90,13 +89,36 @@ OpenGraph.prototype.app = function (meta, type) {
 
 OpenGraph.prototype.toHTML = function (delimiter) {
   var html = []
-  for (var name in this.meta) {
-    if (this.meta.hasOwnProperty(name)) {
-      html.push('<meta property="' + name + '" content="' + entities.encode('' + this.meta[name]) + '">')
+
+  OpenGraph.each(this.meta, function (meta, name) {
+    if (typeof meta === 'string') {
+      html.push(OpenGraph.toMeta(name, meta))
+    } else {
+      OpenGraph.each(meta, function (obj) {
+        if (typeof obj === 'string') {
+          html.push(OpenGraph.toMeta(name, obj))
+        } else {
+          OpenGraph.each(obj, function (val, key) {
+            html.push(OpenGraph.toMeta(name + ':' + key, val))
+          })
+        }
+      })
     }
-  }
+  })
 
   return html.join(delimiter || '\n')
 }
 
+OpenGraph.toMeta = function (name, value) {
+  return '<meta property="' + name + '" content="' + entities.encode('' + value) + '">'
+}
+
+OpenGraph.each = function (obj, cb) {
+  for (var key in obj) {
+    if (obj.hasOwnProperty(key)) {
+      cb(obj[key], key)
+    }
+  }
+}
+
 module.exports = OpenGraph

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ogp-meta",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "author": {
     "name": "egg",
     "email": "[email protected]"