add attachment versioning support to jquery.couch.js
git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@948262 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/jquery.couch.js b/jquery.couch.js
index 4b16742..c9e00cc 100644
--- a/jquery.couch.js
+++ b/jquery.couch.js
@@ -153,7 +153,25 @@
});
},
- db: function(name) {
+ db: function(name, db_opts) {
+ db_opts = db_opts || {};
+ var rawDocs = {};
+ function maybeApplyVersion(doc) {
+ if (doc._id && doc._rev && rawDocs[doc._id] && rawDocs[doc._id].rev == doc._rev) {
+ // todo: can we use commonjs require here?
+ if (typeof Base64 == "undefined") {
+ alert("please include /_utils/script/base64.js in the page for base64 support");
+ return false;
+ } else {
+ doc._attachments = doc._attachments || {};
+ doc._attachments["rev-"+doc._rev] = {
+ content_type :"application/json",
+ data : Base64.encode(rawDocs[doc._id].raw)
+ }
+ return true;
+ }
+ }
+ };
return {
name: name,
uri: this.urlPrefix + "/" + encodeURIComponent(name) + "/",
@@ -251,6 +269,28 @@
}
},
openDoc: function(docId, options, ajaxOptions) {
+ options = options || {};
+ if (db_opts.attachPrevRev || options.attachPrevRev) {
+ $.extend(options, {
+ beforeSuccess : function(req, doc) {
+ rawDocs[doc._id] = {
+ rev : doc._rev,
+ raw : req.responseText
+ };
+ }
+ });
+ } else {
+ $.extend(options, {
+ beforeSuccess : function(req, doc) {
+ if (doc["jquery.couch.attachPrevRev"]) {
+ rawDocs[doc._id] = {
+ rev : doc._rev,
+ raw : req.responseText
+ };
+ }
+ }
+ });
+ }
ajax({url: this.uri + encodeDocId(docId) + encodeOptions(options)},
options,
"The document could not be retrieved",
@@ -258,8 +298,9 @@
);
},
saveDoc: function(doc, options) {
- var beforeSend = fullCommit(options);
options = options || {};
+ var db = this;
+ var beforeSend = fullCommit(options);
if (doc._id === undefined) {
var method = "POST";
var uri = this.uri;
@@ -267,6 +308,7 @@
var method = "PUT";
var uri = this.uri + encodeDocId(doc._id);
}
+ var versioned = maybeApplyVersion(doc);
$.ajax({
type: method, url: uri + encodeOptions(options),
contentType: "application/json",
@@ -277,7 +319,17 @@
if (req.status == 201) {
doc._id = resp.id;
doc._rev = resp.rev;
- if (options.success) options.success(resp);
+ if (versioned) {
+ db.openDoc(doc._id, {
+ attachPrevRev : true,
+ success : function(d) {
+ doc._attachments = d._attachments;
+ if (options.success) options.success(resp);
+ }
+ });
+ } else {
+ if (options.success) options.success(resp);
+ }
} else if (options.error) {
options.error(req.status, resp.error, resp.reason);
} else {
@@ -465,6 +517,7 @@
complete: function(req) {
var resp = $.httpData(req, "json");
if (req.status == options.successStatus) {
+ if (options.beforeSuccess) options.beforeSuccess(req, resp);
if (options.success) options.success(resp);
} else if (options.error) {
options.error(req.status, resp.error, resp.reason);
