DOCSP-46327: Create indexes

Author: norareidy

source/includes/model-data/indexes.py

@@ -0,0 +1,94 @@
+# start-models
+from django.db import models
+from django.db.models import Q, F
+from django_mongodb_backend.fields import EmbeddedModelField, ArrayField
+
+class Nutrition(models.Model):
+    calories = models.IntegerField(default=0)
+    fat_grams = models.IntegerField(default=0)
+    carb_grams = models.IntegerField(default=0)
+    protein_grams = models.IntegerField(default=0)
+
+class Recipe(models.Model):
+    title = models.CharField(max_length=200)
+    cuisine = models.CharField(max_length=200)
+    cook_time = models.IntegerField(default=0)
+    prep_time = models.IntegerField(default=0)
+    allergens = ArrayField(models.CharField(max_length=100), null=True, blank=True)
+    nutrition = EmbeddedModelField(Nutrition, null=True, blank=True)
+
+    class Meta:
+        db_table = "recipes"
+
+    def __str__(self):
+        return self.title
+# end-models
+
+# start-single-field-meta
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(fields=["title"], name="title_idx"),
+    ]
+# end-single-field-meta
+
+# start-single-field-option
+title = models.CharField(max_length=200, db_index=True)
+# end-single-field-option
+
+# start-compound
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(fields=["title", "cook_time"]),
+    ]
+# end-compound
+
+# start-multikey
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(fields=["allergens"], name="allergy_idx"),
+    ]
+# end-multikey
+
+# start-embedded
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(fields=["nutrition"]),
+    ]
+# end-embedded
+
+# start-partial
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(fields=["cuisine"],
+                     condition=Q(cook_time__lt=30),
+                     name="fast_cuisine_idx"),
+    ]
+# end-partial
+
+# start-unique-single
+title = models.CharField(max_length=200, unique=True)
+# end-unique-single
+
+# start-unique-compound
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(fields=["title", "cuisine"]),
+    ]
+    constraints = [
+        models.UniqueConstraint(fields=["title", "cuisine"], name="unique_regional_meal")
+    ]
+# end-unique-compound
+
+# start-multikey
+class Meta:
+    db_table = "recipes"
+    indexes = [
+        models.Index(F("cook_time") + F("prep_time"), name="total_time_idx"),
+    ]
+# end-multikey

source/index.txt

@@ -11,6 +11,7 @@ Django MongoDB Backend
 
 .. toctree::
 
+    Model Your Data </model-data>
     Issues & Help </issues-and-help>
     Compatibility </compatibility>
 
@@ -19,7 +20,6 @@ Django MongoDB Backend
    Get Started </get-started>
    Connection Configuration </connect>
    Interact with Data </interact-data>
-   Model Your Data </model-data>
    Django Feature Limitations </feature-limitations>
    API Documentation <{+api+}>
 
@@ -49,11 +49,11 @@ a Django database backend that uses PyMongo to connect to MongoDB.
 .. Learn how to use {+django-odm+} to perform operations on MongoDB data
    in the :ref:`django-interact-data` section.
 
-.. Model Your Data
-.. ---------------
+Model Your Data
+---------------
 
-.. Learn how to create Django models that represent MongoDB collections
-   in the :ref:`django-model-data` section.
+Learn how to create Django models that represent MongoDB collections
+in the :ref:`django-model-data` section.
 
 .. Django Feature Limitations
 .. --------------------------

source/model-data.txt

@@ -0,0 +1,25 @@
+.. _django-model-data:
+
+===============
+Model Your Data
+===============
+
+.. contents:: On this page
+   :local:
+   :backlinks: none
+   :depth: 2
+   :class: singlecol
+
+.. facet::
+   :name: genre
+   :values: reference
+ 
+.. meta::
+   :description: Learn how to use Django MongoDB Backend to model MongoDB data.
+   :keywords: field, query, collection, object
+
+.. toctree::
+   :titlesonly:
+   :maxdepth: 1
+
+   Create Indexes </model-data/indexes>