Example 5: view function inside of a design document. Note: you can also pass in the map function instead of saving a design doc first, but this is slow because it has to do a full database scan. It is great tool for mobile first applications, thanks to the powerfull sync feature of Couchdb comptatible databases. Now that you understand a bit about how to create and update documents, let's take a small detour to talk about asynchronous code. CouchDB is built for servers (from a Raspberry Pi to big cloud installations), while PouchDB is built for mobile & desktop web-browsers and Couchbase Lite is built for native iOS & Android apps. doc is required to be a document with at least an _id and a _rev property. For example, a call to put() will become a bulkDocs() call with a “batch” of one document. Warning: advanced API. This will notify AngularJS to update the UI when the PouchDB promise has resolved. Note: this is a very, very simple validation example. This method will update an existing document to add the attachment, so it requires a rev if the document already exists. If you don’t specify a callback, then the API returns a promise. Calling cancel() will unsubscribe all event listeners automatically. See Since views perform a full scan of all documents, this method may be slow, unless you first save your view in a design document. The associated design doc is automatically deleted, assuming it only contains one index. Delete an index, remove any orphaned design documents, and clean up any leftover data on disk. This is the most powerful way to filter, because it allows you to pass in arbitrary options to your filter function. Inside the Home controller add the following code to get all documents from pouchdb. what the 'complete' event emits): When live is false, the returned object is also an event emitter as well as a promise, If you use a URL like 'http://domain.com/dbname', then PouchDB will work as a client to an online CouchDB instance. I don't want the controller that will be calling this service to know anything about docs or PouchDB, so I've mapped the rows array to a new array that only contains the row.doc objects. Because PouchDB guarantees to plugin authors that all data changes ultimately happen via bulkDocs(), it is the ideal place for an application or plugin to intercept updates. Post some new docs and auto-generate the _ids: The response contains an array of the familiar ok/rev/id back a mixed array of errors/non-errors. The above plugin would return an error if anything ever attempts to store an unnamed document, including documents which change during replication. Note that the easiest way to do this is to locate the index you want to delete using getIndexes(). Example response in the 'change' listener: Note that replication is supported for both local and remote databases. from the put()/post() API. callback/promise style, and it will be treated as a single-shot request, which GitHub Gist: instantly share code, notes, and snippets. Replicate data from source to target. These behave the same as PouchDB.replicate(): The remoteDB can either be a string or a PouchDB object. This method retrieves the array of documents in the form of objects, to get the contents of each document you need to call as docs.rows. # PouchDB Benchmarks ## IndexedDB ### Operations over all documents | # docs | Create | Get | Sum | |-----|-----|-----|-----| | 1 | 649 | 0.65| 1.35 | Replication options such as filter passed to sync directly will be passed to both replications. Don't worry if the structure of this code seems strange! You can also do selections on multiple fields. All the extendability of hooks comes along with it. There is a new field, _rev, that contains what looks like garbage. When your PouchDB application starts up it could perform a one-off, one-way replication to completion and then initiate the two-way, continuous retryable sync: The above technique results in fewer HTTP requests being used and better performance than just using db.sync on its own. You can use startkey/endkey to find all docs in a range: This will return all docs with _ids between 'bar' and 'quux'. Refer the docs to get more features PouchDB can help. the revision '1-abcd': The response will be a Blob object in the browser, and a Buffer object in Node.js. This to load multiple plugins, add adapters, or just the _id/_revs if you replicate from remote to.... True } ) PouchDB enables applications to store multiple documents, or just the _id/_revs if you don ’ already. 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