I am trying to make a website which will store all the contacts of the user on the server database. The user can add, edit, delete or update a contact. I want the user to be able to do all these functionality even when he is offline. What should I use to achieve this. I came across web sql database which can be use to store database offline. But I dont know how to synchronise the online and offline database. I am using Ruby on Rails
2
There are 2 answers
0
hoitomt
On
You can use Ruby on Rails to do it as well. Check out the Railscast series of video tutorials. Specifically episode 247 to get started with ROR and offline storage
Related Questions in RUBY-ON-RAILS-3
- getting undefined while iterating json
- How can I serialize a numpy array while preserving matrix dimensions?
- What is best way to check if any of the property of object is null or empty?
- How to query JSON data according to JSON array's size with Spark SQL?
- Extracting data from json_decode with lat and lng geolocation
- Convert JSON.gz to JSON in node js
- How do I get the type to convert to when deserializing from Jackson
- Escape dot in jquery validate plugin
- Are allOf and properties keywords interchangeable?
- Sort continents by amount of countries
Related Questions in OFFLINE-BROWSING
- getting undefined while iterating json
- How can I serialize a numpy array while preserving matrix dimensions?
- What is best way to check if any of the property of object is null or empty?
- How to query JSON data according to JSON array's size with Spark SQL?
- Extracting data from json_decode with lat and lng geolocation
- Convert JSON.gz to JSON in node js
- How do I get the type to convert to when deserializing from Jackson
- Escape dot in jquery validate plugin
- Are allOf and properties keywords interchangeable?
- Sort continents by amount of countries
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Popular Tags
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
According to Web SQL's W3C page, the specification is no longer in active maintenance and the Web Applications Working Group does not intend to maintain it further (http://www.w3.org/TR/webdatabase/).
Why don't you give HTML5's persistent storage a try instead? There's a great tutorial here that also features a chapter on local storage hacks before HTML5, so you may read it if you're not planning to dive into HTML5 just yet.
You may also try Google Gears, as it features an interface to a local sqlite3 database in which you may store your offline data.
As for the synchronization mechanism try persistanceJS. It should help you with both HTML5 and Google Gears options.
EDIT
Apparently persistanceJS has no support for rails just yet, but there's a tutorial on how to use local HTML5 storage with rails here, and there's a rails plugin to easily enable gears on rails apps here. Those should get you started.