Django get list of values from queryset

This is similar to values except that instead of returning dictionaries, it returns tuples when iterated over. For example:. If you only pass in a single field, you can also pass in the flat parameter. If Truethis will mean the returned results are single values, rather than one-tuples.

An example should make the difference clearer:. It is an error to pass in flat when there is more than one field.

Note that this method returns a ValuesListQuerySet. This class behaves like a list. Most of the time this is enough, but if you require an actual Python list object, you can simply call list on it, which will evaluate the queryset. A common need is to get a specific field value of a certain model instance. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email.

Notify me of new posts via email. Share this: Twitter Facebook Email. Like this: Like Loading Django Queryset: values. Organisation Dashboard Problem. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email required Address never made public. Name required.

django get list of values from queryset

Post was not sent - check your email addresses! Sorry, your blog cannot share posts by email. By continuing to use this website, you agree to their use. To find out more, including how to control cookies, see here: Cookie Policy.But sometimes, you do not need to use all the fields.

In such situations, we can query only desired fields. You do not want the fetch the other fields to reduce the work the DB has to do. You can verify the generated sql using str queryset.

The only difference between only and values is only also fetches the id. Django ORM Cookbook. Introduction 1. How to find the query associated with a queryset?

How to do a NOT query in Django queryset? How to do union of two querysets from same or different models? How to select some fields only in a queryset? How to do a subquery expression in Django? How to filter a queryset with criteria based on comparing their field values 9. How to filter FileField without any file? How to perform join operations in django ORM?

How to find second largest record using Django ORM? Find rows which have duplicate field values How to find distinct field values from queryset? How to use Q objects for complex queries? How to group records in Django ORM? How to efficiently select a random object from a model? How to use arbitrary database functions in querysets?

How to create multiple objects in one shot? How to copy or clone an existing model object?Opened 5 years ago. Closed 4 years ago. Last modified 4 years ago. I think this could live on a custom queryset just fine or even as free methodI cannot remember when I'd ever would have needed something like this. I know we have a few of "syntax sugar" methods like first and last, but those are used really often in code and having that as nice oneliners makes sense.

I'm not particularly enthusiastic either, but it's better to first propose new APIs like this on the DevelopersMailingList so that the discussion involves a wider audience. While we can argue the latter is a bit verbose I don't think the use case is common enough to warrant an addition to the QuerySet API. Also I added a bit of coverage for get.

Should I open a separate PR with those tests alone? I would think get is pretty well tested by now. Of course, if you think you have something new to offer, we'll take a look. I missed those. The tests are not very well organized for those who are unfamiliar with their structure.

I guess I should try to contribute more : I'm not worry about the time I spent about this method as I learned something new about Django and because something might come out of it anyway. I think we can close this issue and file a new one about documenting what charettes suggested because it's not something that is either widely known or intuitive. In eac :. In ecb3e :. Backport of eacda7bde7e64fce2e95 from master.

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In ac :. Django is a registered trademark of the Django Software Foundation. Django The web framework for perfectionists with deadlines. Opened 5 years ago Closed 4 years ago Last modified 4 years ago. Oldest first Newest first Threaded.

Show comments Show property changes. It is worth a documentation change at the very least. I guess I should try to contribute more : I'm not worry about the time I spent about this method as I learned something new about Django and because something might come out of it anyway, I think we can close this issue and file a new one about documenting what charettes suggested because it's not something that is either widely known or intuitive.

Where do you guys think that this fits?By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Use values to get particular attribute which will return you list of dicts, like.

However, make sure in what order the list will be. Your Share. It's possible that your filter call will return more than one item. An exception will be raised if the query would return anything other than 1 result.

How are we doing? Please help us improve Stack Overflow. Take our short survey. Learn more. How to get a particular attribute from queryset in Django in view?

Ask Question. Asked 7 years, 2 months ago. Active 7 years, 2 months ago. Viewed 68k times. How can I do that? Active Oldest Votes. Rohan Rohan 43k 9 9 gold badges 71 71 silver badges 78 78 bronze badges. Rohan : How can I remove duplicates in this list? Austin Phillips Austin Phillips Sign up or log in Sign up using Google.

Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.This is different from User. Django ORM Cookbook. Introduction 1.

django get list of values from queryset

How to find the query associated with a queryset? How to do a NOT query in Django queryset? How to do union of two querysets from same or different models? How to select some fields only in a queryset? How to do a subquery expression in Django? How to filter a queryset with criteria based on comparing their field values 9.

How to filter FileField without any file? How to perform join operations in django ORM? How to find second largest record using Django ORM? Find rows which have duplicate field values How to find distinct field values from queryset?

How to use Q objects for complex queries? How to group records in Django ORM? How to efficiently select a random object from a model? How to use arbitrary database functions in querysets? How to create multiple objects in one shot? How to copy or clone an existing model object?

django get list of values from queryset

How to ensure that only one object can be created? How to update denormalized fields in other models on save? How to perform truncate like operation using Django ORM? What signals are raised by Django during object creation or update? How to convert string to datetime and store in database? How to order a queryset in ascending or descending order?

How to order a queryset in case insensitive manner? How to order on two fields 4.

django get list of values from queryset

How to order on a field from a related model with a foreign key? How to order on an annotated field? How to model one to one relationships?

How to model one to many relationships? How to model many to many relationships?Encourage your children to help plan, prepare and pack their own lunches. They're more likely to eat a meal that they've helped prepare. Involvement in meal preparation also teaches them where their food comes from, and it provides them with the confidence and skills they will need to prepare food for themselves later in life. Younger children can cut fruit or make their own trail mix from a selection of healthy items such as raisins, dried apricots, sunflower seeds, whole-grain cereals, and pumpkin seeds.

Email: View or print our FREE Waste-free Lunch Pamphlet: The Waste-free Lunchbox Tips for Parents It has been estimated that on average a school-age child using a disposable lunch generates 67 pounds of waste per school year. One of the most critical periods of the process is the follow-up after purchase: making your customer feel like they've made the right choice as soon as they've bought from you goes a long way to developing your relationship with them.

In this regard, we have a lot to learn from a service position that you might not expect: waiters and waitresses. Not only do they interact directly with the customer, research has found that their "follow up" (post purchase) actions can greatly effect the customer's perception of their service, and accordingly, the tip that they leave them. In a study published in the Journal of Applied Social Psychology, researchers tested the effects that mints had against a control group, where no mints were given, in order to measure their effectiveness in increasing tips.

The first group studied had waiters giving mints along with the check, making no mention of the mints themselves. The second group had waiters bring out two mints by hand, and they mentioned them to the table ("Would anyone like some mints before they leave.

The last group had waiters bring out the check first along with a few mints. A short time afterward, the waiter came back with another set of mints, and let customers know that they had brought out more mints, in case they wanted another. At first glance, the last two groups seem very similar: two mints per-person were brought out, and the waiter mentioned them.

In the last test, the only difference was that the waiter brought out the second set of mints after some time had passed, and mentioned that they had done so in case the table would like some more.

The post-purchase follow up with genuine concern for the customer ("I thought you might like more mints. It was the surprise and the perception of the waiter's willingness to follow up post purchase that made customers so happy. That first purchase is especially critical, and the process of creating supporters out of customers doesn't just end with making a great product.

Given what we know about the power of following up, what can online businesses do to create a similar kind of customer satisfaction that waiters were able to do with mere mints. Obviously that follow up freebie (chocolate mint or otherwise) works very well, but what kind of follow-up can be offered. If a simple mint can do this for customers who just paid for a full meal, you can definitely offer some value for free post-purchase, no matter what you're selling.

Don't miss our free resource consisting of 75 customer service facts, quotes, and statistics.

Ordering and Advanced Finding of Objects by Date (Django Tutorial) - Part 49

Consider it our free mint to you. How might you use follow up "freebies" in your business to increase customer satisfaction and retention post sale. PS: Might we offer you a free e-Book consisting of 75 customer service facts, quotes, and statistics.

Join 76,547 subscribers and get an original essay twice a week. When it comes to customer service, small changes can have a big impact. The results were surprising to say the least.If the rules made therein differ from the general sporting rules and arrangements, such shall apply to the execution of the live bet as separate treatments.

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Django Queryset:value_list()

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