Finding the next and previous documents in a MongoEngine queryMongoengine document consistency under concurrencyEmbedded Documents issue with MongoEngineUpgrading MongoEngine Document and Embedded Document Schemasmongoengine know when to delete documentPulling basic mongoengine document definitions into flask-mongoengineUse Flask-Mongoengine with existing Mongoengine documentsMongoEngine: Getting parent document from embedded documentmongoengine best way to query over a list of embedded documents with inheritance
Redacting URLs as an email-phishing preventative?
Convergence of series of normally distributed random variables
Semantic difference between regular and irregular 'backen'
Discussing work with supervisor in an invited dinner with his family
Is it legal for source code containing undefined behavior to crash the compiler?
Can an Arcane Focus be embedded in one's body?
How much does Commander Data weigh?
Higman's lemma and a manuscript of Erdős and Rado
How to check whether a sublist exist in a huge database lists in a fast way?
How to get trace to get a cylinder when I rotate a rectangle?
What do these commands specifically do?
Why did my folder names end up like this, and how can I fix this using a script?
Why is strlen so complex in C?
How to gently end involvement with an online community?
Why can't I access the 'name' of an object when looping through the scene's objects?
What's special ammo?
How to set different form displays for creating and editing an entity?
Why is getting a PhD considered "financially irresponsible"?
Gambler coin problem: fair coin and two-headed coin
What is the meaning of “these lederhosen are riding up my Bundesliga”?
Cost of oil sanctions to world's consumers
Can RMSE and MAE have the same value?
Was the Boeing 2707 design flawed?
If the Shillelagh cantrip is applied to a club with non-standard damage dice, what is the resulting damage dice?
Finding the next and previous documents in a MongoEngine query
Mongoengine document consistency under concurrencyEmbedded Documents issue with MongoEngineUpgrading MongoEngine Document and Embedded Document Schemasmongoengine know when to delete documentPulling basic mongoengine document definitions into flask-mongoengineUse Flask-Mongoengine with existing Mongoengine documentsMongoEngine: Getting parent document from embedded documentmongoengine best way to query over a list of embedded documents with inheritance
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I would like to get the next and previous documents in a MongoEngine query which is ordered by a property.
query = ImageModel
.objects(dataset_id=dataset.id, deleted=False)
.order_by('file_name')
.all()
images = list(query)
image_index = images.index(image)
image_previous = None if image_index - 1 < 0 else images[image_index - 1].id
image_next = None if image_index + 1 == len(images) else images[image_index + 1].id
This code provided above is my current implementation which is highly inefficient. Does anyone have any ideas?
python-3.x mongoengine flask-mongoengine
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
add a comment |
I would like to get the next and previous documents in a MongoEngine query which is ordered by a property.
query = ImageModel
.objects(dataset_id=dataset.id, deleted=False)
.order_by('file_name')
.all()
images = list(query)
image_index = images.index(image)
image_previous = None if image_index - 1 < 0 else images[image_index - 1].id
image_next = None if image_index + 1 == len(images) else images[image_index + 1].id
This code provided above is my current implementation which is highly inefficient. Does anyone have any ideas?
python-3.x mongoengine flask-mongoengine
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
add a comment |
I would like to get the next and previous documents in a MongoEngine query which is ordered by a property.
query = ImageModel
.objects(dataset_id=dataset.id, deleted=False)
.order_by('file_name')
.all()
images = list(query)
image_index = images.index(image)
image_previous = None if image_index - 1 < 0 else images[image_index - 1].id
image_next = None if image_index + 1 == len(images) else images[image_index + 1].id
This code provided above is my current implementation which is highly inefficient. Does anyone have any ideas?
python-3.x mongoengine flask-mongoengine
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
I would like to get the next and previous documents in a MongoEngine query which is ordered by a property.
query = ImageModel
.objects(dataset_id=dataset.id, deleted=False)
.order_by('file_name')
.all()
images = list(query)
image_index = images.index(image)
image_previous = None if image_index - 1 < 0 else images[image_index - 1].id
image_next = None if image_index + 1 == len(images) else images[image_index + 1].id
This code provided above is my current implementation which is highly inefficient. Does anyone have any ideas?
python-3.x mongoengine flask-mongoengine
python-3.x mongoengine flask-mongoengine
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
asked Mar 27 at 19:51
jsbroksjsbroks
861 silver badge8 bronze badges
861 silver badge8 bronze badges
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
I'm doing it the following way:
images = ImageModel.objects(dataset_id=dataset.id, deleted=False)
pre = images.filter(file_name__lt=image.file_name).order_by('-file_name').first()
nex = images.filter(file_name__gt=image.file_name).order_by('file_name').first()
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55385412%2ffinding-the-next-and-previous-documents-in-a-mongoengine-query%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
I'm doing it the following way:
images = ImageModel.objects(dataset_id=dataset.id, deleted=False)
pre = images.filter(file_name__lt=image.file_name).order_by('-file_name').first()
nex = images.filter(file_name__gt=image.file_name).order_by('file_name').first()
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
add a comment |
I'm doing it the following way:
images = ImageModel.objects(dataset_id=dataset.id, deleted=False)
pre = images.filter(file_name__lt=image.file_name).order_by('-file_name').first()
nex = images.filter(file_name__gt=image.file_name).order_by('file_name').first()
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
add a comment |
I'm doing it the following way:
images = ImageModel.objects(dataset_id=dataset.id, deleted=False)
pre = images.filter(file_name__lt=image.file_name).order_by('-file_name').first()
nex = images.filter(file_name__gt=image.file_name).order_by('file_name').first()
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
I'm doing it the following way:
images = ImageModel.objects(dataset_id=dataset.id, deleted=False)
pre = images.filter(file_name__lt=image.file_name).order_by('-file_name').first()
nex = images.filter(file_name__gt=image.file_name).order_by('file_name').first()
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
answered Mar 27 at 21:25
jsbroksjsbroks
861 silver badge8 bronze badges
861 silver badge8 bronze badges
add a comment |
add a comment |
Got a question that you can’t ask on public Stack Overflow? Learn more about sharing private information with Stack Overflow for Teams.
Got a question that you can’t ask on public Stack Overflow? Learn more about sharing private information with Stack Overflow for Teams.
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55385412%2ffinding-the-next-and-previous-documents-in-a-mongoengine-query%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
