Unable to serialize database. Django dump data for a single. CommandError: Unable to serialize database. Django serializer needs to receive Date. Field values as date type, but in your case SQL Server converts the value from date to varchar type automatically because the driver doesn't understand the date type. SQL Server ODBC Driver is basically for old versions of SQL Server and is obsolete to work with new versions of SQL Server. If you want to make use of new features, for example new data types like date, you have to use the appropriate version of SQL Server Native Client instead. If you want to know more about the difference between SQL Server ODBC Driver and SQL Server Native Client, see this: http: //blogs. Anyway, I think a quick and reliable solution for your problem is just to install SQL Server Native Client (or more recent Microsoft ODBC Driver 1. SQL Server) on your computer and specify the driver name as driver option in your DATABASE settings. Releases - Riding Rails. Rails 2. 0 is finally finished after about a year in the making. This is a fantastic release that’s absolutely stuffed with great new features, loads of fixes, and an incredible amount of polish. We’ve even taken a fair bit of cruft out to make the whole package more coherent and lean. What a milestone for Ruby on Rails as well. I’ve personally been working on this framework for about four and a half years and we have contributors who’ve been around for almost as long as well. It’s really satisfying to see how far we’ve come in that period of time. That we’ve proven the initial hype worthy, that we’ve been able to stick with it and continue to push the envelope. Before jumping into the breakdown of features, I’d just like to extend my deep gratitude towards everyone who helped make this release possible. From the stable of merry men in the Rails core to the hundreds of contributors who got a patch applied to everyone who participated in the community over the year. This release is a triumph for large- scale open source development and you can all be mighty proud of the role you played. Cheers! With the touchy- feely stuff out of the way, let’s dig into the feast and look at just a sliver of what’s new: Action Pack: Resources. This is where the bulk of the action for 2. We’ve got a slew of improvements to the RESTful lifestyle. First, we’ve dropped the semicolon for custom methods instead of the regular slash. So /people/1; edit is now /people/1/edit. We’ve also added the namespace feature to routing resources that makes it really easy to confine things like admin interfaces. To keep track of this named routes proliferation, we’ve added the “rake routes” task, which will list all the named routes created by routes. We’ve also instigated a new convention that all resource- based controllers will be plural by default. This allows a single resource to be mapped in multiple contexts and still refer to the same controller. Example. # /avatars/4. Avatars. Controller#show. Avatars. Controller#show. We already have #respond. We’ve separated the format of the template from its rendering engine. So show. rhtml now becomes show. And you can now have something like show. Django: Error: Not able to serialize database: For whatever reason today I am unable to dump my database using python manage.py. As always, huge thanks to the many contributors who helped with this release. Posted by matthewd, December 9, 2016. Django dumpdata unable to serialize existing column. Unable to serialize database. Unable to serialize database? ERB renderer. So the new format for templates is action. A few examples: show. Builder format, previously known as rxml, to render an index action for the application/atom+xml mime typeedit. HAML template engine (not included by default) to render an edit action for the custom Mime: :IPHONE format. Speaking of the i. Phone, we’ve made it easier to declare “fake” types that are only used for internal routing.
Like when you want a special HTML interface just for an i. Phone. All it takes is something like this. This file is included by default in all new applications. Action Pack: Record identification. Piggy- backing off the new drive for resources are a number of simplifications for controller and view methods that deal with URLs. We’ve added a number of conventions for turning model classes into resource routes on the fly. Examples. # person is a Person object, which by convention will. Resources, multiple representations, but there’s more. We’ve added a new module to work with HTTP Basic Authentication, which turns out to be a great way to do API authentication over SSL. It’s terribly simple to use. Here’s an example (there are more in Action. Controller: :Http. Authentication). class Posts. Controller < Application. Controller. USER. If you set Action. Controller: :Base. That allows the browser to open many more connections at a time and increases the perceived speed of your application. Action Pack: Security. Making it even easier to create secure applications out of the box is always a pleasure and with Rails 2. Most importantly, we now ship we a built- in mechanism for dealing with CRSF attacks. By including a special token in all forms and Ajax requests, you can guard from having requests made from outside of your application. All this is turned on by default in new Rails 2. Action. Controller: :Base. The old Text. Helper#sanitize method has gone from a black list (very hard to keep secure) approach to a white list approach. If you’re already using sanitize, you’ll automatically be granted better protection. You can tweak the tags that are allowed by default with sanitize as well. See Text. Helper#sanitize for details. Finally, we’ve added support for HTTP only cookies. They are not yet supported by all browsers, but you can use them where they are. Action Pack: Exception handling. Lots of common exceptions would do better to be rescued at a shared level rather than per action. This has always been possible by overwriting rescue. So now we have a class level macro called rescue. Example. class Posts. Controller < Application. Controller. rescue. That means sessions are no longer stored on the file system or in the database, but kept by the client in a hashed form that can’t be forged. This makes it not only a lot faster than traditional session stores, but also makes it zero maintenance. There’s no cron job needed to clear out the sessions and your server won’t crash because you forgot and suddenly had 5. K files in tmp/session. This setup works great if you follow best practices and keep session usage to a minimum, such as the common case of just storing a user. If, however, you are planning on storing the nuclear launch codes in the session, the default cookie store is a bad deal. While they can’t be forged (so is. If that’s a problem for your application, you can always just switch back to one of the traditional session stores (but first investigate that requirement as a code smell). Action Pack: New request profiler. Figuring out where your bottlenecks are with real usage can be tough, but we just made it a whole lot easier with the new request profiler that can follow an entire usage script and report on the aggregate findings. You use it like this. Simple example. # index. Something new that we have added, though, is a very simple Query Cache, which will recognize similar SQL calls from within the same request and return the cached result. This is especially nice for N+1 situations that might be hard to handle with : include or other mechanisms. We’ve also drastically improved the performance of fixtures, which makes most test suites based on normal fixture use be 5. Active Record: Sexy migrations. There’s a new alternative format for declaring migrations in a slightly more efficient format. Before you’d write. One of the key points in that criticism has been the work with declaring dependencies between fixtures. Having to relate fixtures through the ids of their primary keys is no fun. That’s been addressed now and you can write fixtures like this. Shopify. # products. In 2. 0 we’ve added deserialization too, so you can say Person. We’ve also added serialization to JSON, which supports the same syntax as XML serialization (including nested associations). So say you’re using acts. So Rails now only ships with adapters for My. SQL, SQLite, and Postgre. SQL. These are the databases that we have easy and willing access to test on. But that doesn’t mean the commercial databases are left out in the cold. Rather, they’ve now been set free to have an independent release schedule from the main Rails distribution. And that’s probably a good thing as the commercial databases tend to require a lot more exceptions and hoop jumping on a regular basis to work well. The commercial database adapters now live in gems that all follow the same naming convention: activerecord- XYZ- adapter. So if you gem install activerecord- oracle- adapter, you’ll instantly have Oracle available as an adapter choice in all the Rails applications on that machine. You won’t have to change a single line in your applications to take use of it. That also means it’ll be easier for new database adapters to gain traction in the Rails world. As long as you package your adapter according to the published conventions, users just have to install the gem and they’re ready to roll. Active Record: with. Instead, it’s now encouraged that you only use it within the model itself. That’s what it was designed for and where it logically remains a good fit. But of course, this is all about encouraging and discouraging. If you’ve weighed the pros and the cons and still want to use with. Unless you absolutely have to use SOAP for integration purposes, we strongly discourage you from doing so. As a naturally extension of that, we’ve pulled Action. Web. Service from the default bundle. It’s only a gem install actionwebservice away, but it sends an important message none the less. At the same time, we’ve pulled the new Active. Resource framework out of beta and into the default bundle. Active. Resource is like Active. Record, but for resources. It follows a similar API and is configured to Just Work with Rails applications using the resource- driven approach. For example, a vanilla scaffold will be accessible by Active. Resource. Active. Support. There’s not all that much new in Active. Support. We’ve a host of new methods like Array#rand for getting a random element from an array, Hash#except to filter down a hash from undesired keys and lots of extensions for Date. We also made testing a little nicer with assert. Short of that, it’s pretty much just fixes and tweaks. Action Mailer. This is a very modest update for Action Mailer. Besides a handful of bug fixes, we’ve added the option to register alternative template engines and assert. My favorite amongst these is the return of the breakpoint in form of the debugger. It’s a real debugger too, not just an IRB dump. You can step back and forth, list your current position, and much more. It’s all coming from the gracious note of the ruby- debug gem. So you’ll have to install that for the new debugger to work. To use the debugger, you just install the gem, put “debugger” somewhere in your application, and then start the server with —debugger or - u.
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