blocks|key|448810|text|另一种选择可能是使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|448811|class+Meta:
++++managed+=+False|code-block|syntax|javascript|448812|防止Django创建数据库表。|448813|https://docs.djangoproject.com/en/2.2/ref/models/options/#managed|offset|length|448814|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|1T|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|W|8|@]|9|@$K|X|L|Y|1|Z]]|A|$]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|J]]]]

Another option may be to use: 

<pre><code>class Meta:
 managed = False
</code></pre>

to prevent Django from creating a database table.

<a href="https://docs.djangoproject.com/en/2.2/ref/models/options/#managed" rel="noreferrer">https://docs.djangoproject.com/en/2.2/ref/models/options/#managed</a>

blocks|key|662889|text|对我来说，听起来就像是一个普通的Class。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|662890|如果你愿意，你可以把它放到models.py中，但不要在django.db.models.Model上子类化它。或者您可以将其放入任何python文件中，导入到您想要使用它的任何范围内。|662891|也许在请求传入时使用the+middleware实例化它，并在请求完成时丢弃它。一种访问策略可能是将其附加到请求对象本身，而不是ymmv。|662892|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python.org/tutorial/classes.html|1|https://docs.djangoproject.com/en/dev/topics/http/middleware/^0|G|5|G|5|0|0|D|9|S|M|0|A|E|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|14|8|@]|D|@$9|15|A|16|1|17]]|E|$]]|$1|J|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

Just sounds like a regular <a href="http://docs.python.org/tutorial/classes.html" rel="nofollow noreferrer"><code>Class</code></a> to me. 

You can put it into <code>models.py</code> if you like, just don't subclass it on <code>django.db.models.Model</code>. Or you can put it in any python file imported into the scope of whereever you want to use it.

Perhaps use <a href="https://docs.djangoproject.com/en/dev/topics/http/middleware/" rel="nofollow noreferrer">the middleware</a> to instantiate it when request comes in and discard when request is finished. One access strategy might be to attach it to the request object itself but ymmv.

blocks|key|448599|text|与SQLAlchemy不同，django的对象关系映射不支持在没有数据库后端的模型上进行查询。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|448600|您的选择仅限于使用django的内存数据库，或者使用诸如dqms之类的第三方应用程序，这些应用程序为django的对象关系映射提供纯粹的内存中后端。|offset|length|448601|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/felipecruz/dmqs^0|0|S|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Unlike SQLAlchemy, django's ORM does not support querying on the model without a database backend.

Your choices are limited to using a SQLite in-memory database, or to use third party applications like <a href="https://github.com/felipecruz/dmqs" rel="noreferrer">dqms</a> which provide a pure in-memory backend for django's ORM.

blocks|key|662822|text|使用Django的cache+framework存储数据并在视图之间共享。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|662823|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.djangoproject.com/en/dev/topics/cache/^0|9|F|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Use Django's <a href="https://docs.djangoproject.com/en/dev/topics/cache/" rel="nofollow">cache framework</a> to store data and share it between views.

blocks|key|448408|text|尝试使用基于数据库或文件的sessions。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|448409|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.djangoproject.com/en/dev/topics/http/sessions/^0|D|8|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Try to use database or file based <a href="https://docs.djangoproject.com/en/dev/topics/http/sessions/" rel="nofollow">sessions</a>.

blocks|key|448667|text|你需要缓存，它将你的数据存储在内存中，并将是独立的应用程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|448668|有了Django，你可以使用各种缓存后端，比如memcache，数据库后端，redis等等。因为你想要一些基本的查询和排序功能，我建议你使用Redis。Redis具有高性能(不高于memcache)，支持数据结构(string/hash/list/sets/sorted-set)。|offset|length|448669|Redis不会取代数据库，但适合作为键值数据库模型，在这种模型中，您必须准备键才能有效地查询数据，因为Redis只支持键查询。|448670|For+example,+user+'john.doe'+data+is:+key1+=+val1
The+key+would+be+-+john.doe:data:key1
Now+I+can+query+all+the+data+for+for+this+user+as+-+redis.keys("john.doe:data:*")|code-block|syntax|javascript|448671|Redis命令可从http://redis.io/commands获得|448672|Django+Redis缓存后端：https://github.com/sebleier/django-redis-cache/|448673|entityMap|0|LINK|mutability|MUTABLE|url|http://redis.io/|1|http://redis.io/commands|2|https://github.com/sebleier/django-redis-cache/^0|0|1Y|5|0|0|0|0|9|O|1|0|H|1B|2|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@$D|14|E|15|1|16]]|A|$]]|$1|F|3|G|5|6|7|17|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|18|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|19|8|@]|9|@$D|1A|E|1B|1|1C]]|A|$]]|$1|O|3|P|5|6|7|1D|8|@]|9|@$D|1E|E|1F|1|1G]]|A|$]]|$1|Q|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]|10|$5|T|U|V|A|$W|11]]]]

You need Caching, which will store your data in Memory and will be seperate application. 

With Django, you can use various caching backend such as memcache, database-backend, redis etc.
Since you want some basic query and sorting capability, I would recommend <a href="http://redis.io/" rel="nofollow">Redis</a>. Redis has high performance (not higher than memcache), supports datastructures (string/hash/lists/sets/sorted-set). 

Redis will not replace the database, but will fit good as Key-Value Database Model, where you have to prepare the key to efficiently query the data, since Redis supports querying on keys only.

<pre><code>For example, user 'john.doe' data is: key1 = val1
The key would be - john.doe:data:key1
Now I can query all the data for for this user as - redis.keys("john.doe:data:*")
</code></pre>

Redis Commands are available at <a href="http://redis.io/commands" rel="nofollow">http://redis.io/commands</a> 

Django Redis Cache Backend : <a href="https://github.com/sebleier/django-redis-cache/" rel="nofollow">https://github.com/sebleier/django-redis-cache/</a>

blocks|key|663065|text|我的床是MongoDB或任何其他nosql；持久化和删除数据的速度非常快，你可以使用django-norel(mongodb)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|663066|http://django-mongodb.org/|offset|length|663067|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|Q|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

I make my bed to MongoDB or any other nosql; persisting and deleting data is incredibly fast, you can use django-norel(mongodb) for that.

<a href="http://django-mongodb.org/" rel="nofollow">http://django-mongodb.org/</a>

I know the automatic setting is to have any models you define in models.py become database tables.

I am trying to define models that won't be tables. They need to store dynamic data (that we get and configure from APIs), every time a user searches for something. This data needs to be assembled, and then when the user is finished, discarded.

previously I was using database tables for this. It allowed me to do things like "Trips.objects.all" in any view, and pass that to any template, since it all came from one data source. I've heard you can just not "save" the model instantiation, and then it doesn't save to the database, but I need to access this data (that I've assembled in one view), in multiple other views, to manipulate it and display it . . . if i don't save i can't access it, if i do save, then its in a database (which would have concurrency issues with multiple users)

I don't really want to pass around a dictionary/list, and I'm not even sure how i was do that if I had to.

ideas?

Thanks!

django models without database

数据存储

数据结构

数据库

MongoDB

Django

Redis

我知道自动设置是让您在models.py中定义的任何模型成为数据库表。我正在尝试定义不会是表的模型。他们需要存储动态数据(我们从API获取和配置的)，每次用户搜索到的东西。这些数据需要组装，然后在用户完成时丢弃。在此之前，我使用的是数据库表。它允许我在任何视图中执行"Trips.objects.all“之类的操作，并将其传递给任何模板，因为它们都来自一个数据源。我听说您不能“保存”模型实例化，然后

问没有数据库的django模型
EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问没有数据库的django模型EN

回答 7

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问没有数据库的django模型
EN