Locate every instance of items in an array within a string

Question

Locate every instance of items in an array within a string

My files have a structure similar to this:

https://i.stack.imgur.com/KyaVY.png

When a user conducts a search, they send an array to the backend. This array always includes at least one element.

For example, if they send ['javascript'] to the backend. Is there a method to query MongoDB to identify which documents contain the term javascript?

I attempted something like,

db.find({ body: { $all:['javascript'] } });

However, this only functions if body is also an array. Are there any other ways to achieve this?

javascript mongodb mongoose

Answer 1

Answer №1

One way to search for multiple keywords in a text is by creating a pipe-delimited regex pattern with the list of keywords like so:

const words = ["react", "node", "angular"];
const regexPattern = words.join("|");

db.find({
  body: { $regex: regexPattern, $options: 'i' }
});

Answer 2

One way to search for multiple keywords in a text is by creating a pipe-delimited regex pattern with the list of keywords like so:

const words = ["react", "node", "angular"];
const regexPattern = words.join("|");

db.find({
  body: { $regex: regexPattern, $options: 'i' }
});

Answer 3

Answer №2

To utilize the $regex operator, simply include a regex within a string:

db.find({ content: { $regex: ".*python.*" }});

Alternatively, you can use the following methods:

db.find({ content: /.*python.*/ });
db.find({ content: /python/ });

Answer 4

To utilize the $regex operator, simply include a regex within a string:

db.find({ content: { $regex: ".*python.*" }});

Alternatively, you can use the following methods:

db.find({ content: /.*python.*/ });
db.find({ content: /python/ });

Answer 5

Answer №3

To begin, the first step is to establish a text index on the specific fields you wish to search within. If your intention is to search across all fields in the collection, simply execute the following command:

db.collection.createIndex( { "$**": "text" } )

If you only want to search within certain designated fields, then utilize this format instead:

db.collection.createIndex( { title: "text", body: "text" } )

You also have the option to assign weightage to the fields, such as giving more importance to 'title' over 'description'.

Subsequently, conduct your searches using the syntax below:

db.collection.find( { $text: { $search: "java javascript python" } } )

This query will retrieve documents containing any or all of the specified words: java, javascript, or python.

Answer 6

To begin, the first step is to establish a text index on the specific fields you wish to search within. If your intention is to search across all fields in the collection, simply execute the following command:

db.collection.createIndex( { "$**": "text" } )

If you only want to search within certain designated fields, then utilize this format instead:

db.collection.createIndex( { title: "text", body: "text" } )

You also have the option to assign weightage to the fields, such as giving more importance to 'title' over 'description'.

Subsequently, conduct your searches using the syntax below:

db.collection.find( { $text: { $search: "java javascript python" } } )

This query will retrieve documents containing any or all of the specified words: java, javascript, or python.

Locate every instance of items in an array within a string

Answer №1

Answer №2

Answer №3

Similar questions

Issue with scrolling in Droppable container on JQuery UI interface

What is the reason behind the lag caused by setTimeout() in my application, while RxJS timer().subscribe(...) does not have the same

Is it not possible to utilize inline "if" statements in conjunction with useEffect within a functional React component?

The Firebase cloud function will only activate when I manually input data into the Firestore database via the console

What is the best way to cancel a Promise if it hasn't been resolved yet

Processing ajax requests in Rails 4 using HTML format

What is the reason for jQuery displaying undefined when attempting to retrieve a custom data attribute using .prop()?

Concealing the TinyNav Drop-Down Menu

Retrieve various key-value pairs from the JSON data in the global market API using AJAX

Is there a way to update a div element with an image without having to refresh

emphasizing the specific text being searched for within the page

Encountered a 404 error while utilizing the Java - Angular web service

Retrieving information from MongoDB database and displaying it in a Jade file

The MEAN stack consistently shows an error message of 'Invalid password' whenever a user attempts to log in

React Native displaying identical path

CSS changes triggered by JQuery are ineffective

How can we efficiently load and display all images from a directory using Node.js and JavaScript?

How can you effectively blend Vue/Angular with other JavaScript resources to enhance your development process?

Avoiding page refresh while submitting a form can be tricky, as both e.preventDefault() and using a hidden iFrame seem

Obtain the dynamic $scope variable within the HTML structure