Learn Angularjs, Mongodb and Scss

This course provides a practical introduction to MongoDB, a leading NoSQL document database. You will learn how to set up a local MongoDB environment using Docker and then dive into essential database operations. By the end of this course, you will know how to:

- Create and manage MongoDB collections.
- Insert, filter, update, and delete documents.
- Perform complex queries using logical operators and expressions.
- Manipulate data within arrays and nested fields.
- Rename fields and manage date and time properties.
- Execute multiple operations efficiently using bulk operations.

Effectively manage and interact with MongoDB databases. Being proficient with databases is a crucial skill in modern app development.

Tomasz Ducin

Get Started with MongoDB

Learn MongoDB setup with Docker, manage collections, documents, queries, data manipulation, and bulk operations. Essential for modern app development.

In this lesson, we learn that to execute multiple requests to a MongoDB server efficiently, we can use **bulk operations**.

We start by initializing a bulk operation that can be either ordered or unordered: `initializeOrderedBulOp` or `initializeUnorderedBulOp`

We demonstrate how to add an insertion operation for a document, such as "John Doe," and how to remove another document, "Bob Johnson," from the collection. After executing the bulk operation, we verify the changes made.

Furthermore, we introduce the `bulkWrite` method for a more streamlined approach to performing multiple operations in one command, allowing us to specify each operation's details explicitly while managing both insertions and deletions effectively.



Perform Multiple Operations using Bulk in MongoDB

Perform multiple operations in MongoDB using bulk operations: insert, update, and delete documents efficiently with bulkWrite and bulk.execute.

In this lesson, we learn that deleting documents from MongoDB collections is straightforward with the `deleteOne` and `deleteMany` methods.

We demonstrate how to use `deleteOne` to remove a specific document based on its salary, confirming the deletion by querying the collection afterward.

We also explore the use of `deleteMany` to remove multiple documents that meet specified criteria, such as salaries greater than a certain amount.

Finally, we illustrate how to clear an entire collection by executing `deleteMany` with an empty query, resulting in the removal of all documents within the collection.

Delete Documents in MongoDB Collections using deleteOne and deleteMany

Delete documents in MongoDB collections using deleteOne and deleteMany methods: remove specific documents or clear entire collections efficiently.

In this lesson, we learn that upserting in MongoDB allows us to **update a document if it exists** or **insert a new one if it does not**.

We demonstrate how to use the `updateOne` method with the `upsert` flag set to true, which enables us to create a new document for "Kill Bill" with specified skills and age when no matching document is found.

Additionally, we explore using `replaceOne` for similar functionality, confirming that a new document is created when attempting to replace one that does not exist.

This operation simplifies database interactions by combining update and insert actions into a single command.


Upsert Documents in MongoDB Collections using updateOne and replaceOne

Perform upsert operations in MongoDB using updateOne and replaceOne with the upsert option to update or insert documents efficiently.

In this lesson, we learn that replacing a document in a MongoDB collection is done using the `replaceOne` method, which does **not** have a _replaceMany_ equivalent.

We demonstrate how to search for a specific document, such as one with the name "Alice Smith," and replace it with a new document containing updated information like "John Doe."

This operation completely removes all existing fields from the original document and replaces them with those in the new document. After running the operation, we verify that only the new data remains in the collection.


Replace Documents in MongoDB Collections using replaceOne

Replace documents in MongoDB collections using replaceOne to completely overwrite existing documents with new data based on specified queries.

In this lesson, we learn that renaming fields in MongoDB documents can be accomplished with the `$rename` operator.

We demonstrate how to use the `updateOne` method to target a specific document, such as one with the name "Bob Johnson."

By specifying the old field names and their new counterparts, like changing position to title and skills to competence, we can effectively update our document structure.

Rename fields in MongoDB Documents

Rename fields in MongoDB documents using the $rename operator with updateOne or updateMany for efficient data management

In this lesson, we learn that updating arrays within MongoDB documents involves using the `$push` and `$pull` operators.

The `$push` operator allows us to add new items to an array, while combining it with the `$each` operator enables us to add multiple items simultaneously.

We demonstrate how to add "Java" and ".Net" to the skills array.

Conversely, the `$pull` operator removes elements from an array, and we can use the in operator with `$pull` to remove multiple items, such as "Python" and "SQL," based on specified criteria, providing flexibility in array manipulation.

Update Mongo Documents arrays using $push, $pull and $each operations

Update MongoDB arrays with $push and $pull: add single/multiple elements using $each and remove elements using in with $pull.

In this lesson, we learn that updating documents in MongoDB involves using the `updateOne` and `updateMany` methods along with operators like `$set` and `$unset`.

The `$set` operator allows us to modify existing properties or add new ones, even in nested structures, while the `$unset` operator removes specified properties from a document.

We demonstrate how to use these operators to change a document's salary, modify nested personal information, and remove fields like position.

We also show how to combine `$set` and `$unset` in a single operation for efficient data management.


Update Mongo Documents using updateOne, updateMany, $set and $unset operations

Update MongoDB documents with $set and $unset operators: modify, add, and remove properties, including nested fields, in a single operation.

In this lesson, we learn that we can store datetime properties in MongoDB documents using the `$currentDate` operator.

We demonstrate how to create a new date property for a document, such as one for "Bob Johnson," by simply applying the operator.

We also show how to update multiple properties at once and set them as either Date or timestamp types.

By using `$currentDate`, we can easily manage and modify date-related information in our MongoDB documents, ensuring accurate time tracking.

Create or Modify Datetime properties using $currentDate in MongoDB

Create or modify datetime properties in MongoDB using $currentDate to set fields as Date or timestamp types for efficient date management

In this lesson, we learn that the Mongosh Cursor is a data structure used by MongoDB to execute queries and manage result sets.

We cover how to sort results using the sort() method, specifying ascending or descending order based on properties like salary.

Additionally, we demonstrate how to limit the number of documents returned with the limit() method and count the size of the result set using count().

We also explore nested sorting by multiple properties, such as salary and age, to refine our query results further.

Perform simple operations on resultset using Mongosh Cursor

Explore Mongosh Cursor operations: sort, limit, count, and nested sort for result sets. Learn to manipulate MongoDB query results effectively.

In this lesson, we learn that when querying MongoDB collections, we can control which properties are returned by using projections with the `findOne` method.

We demonstrate how to include or exclude fields by setting them to 1 or 0, respectively. For example, we can choose to include the name and position while excluding the `_id` field.

We also cover how to access nested properties and project specific elements from arrays using the `$slice` operator, allowing for more precise data retrieval based on our needs.

Return a subset of properties of a MongoDB Document (projections, $slice)

Return specific properties from MongoDB documents using projections in the findOne method, including nested fields and array slicing, $slice

In this lesson, we learn that counting documents that meet certain criteria in MongoDB can be done with the countDocuments() method.

We demonstrate how to retrieve the total number of documents when no query is specified and how to filter results using regular expressions.

For example, we can count employees with names containing a lowercase "a" or those with specific skills, using `$regex`.

Additionally, we show how to count documents where age is not equal to a given value, illustrating the versatility of the `countDocuments()` method in various scenarios.


Count documents satisfying a query in MongoDB Collection (countDocuments, $regex, $in)

Count documents in MongoDB collections using countDocuments() with query filters, including regex and specific conditions, using $regex, $in

In this lesson, we learn that searching for a MongoDB document by its ID can be a little tricky in the beginning.

We demonstrate how to use the `_id` field to search for specific documents and emphasize the necessity of wrapping the ID with the `ObjectId` constructor. This step is crucial because failing to do so can result in empty results, underscoring the importance of proper syntax when querying by document ID.


Find Document by id in MongoDB Collections

Find MongoDB documents by their unique _id using the ObjectId constructor without mistakes.

In this lesson, we learn that we can perform advanced filtering in MongoDB by using expressions within our queries. All thanks to `$expr`.

We demonstrate how to compare multiple document properties, such as ensuring age is less than salary using comparison operators (`$lt`, `$lte`, `$gt`, `$in`, `$nin`, etc).

Additionally, we explore filtering based on the length of an array (`$size`) to check for specific skills.


Filtering Documents using Expressions in MongoDB Collections ($expr, $size, $in, $and, etc)

Filter MongoDB documents using expressions $expr with comparison operators $lt, $gt, $eq and array length checks $size

In this lesson, we learn that combining multiple criteria in MongoDB queries can be done using logical operators such as `$and` and `$or`.

We demonstrate how to create queries that filter documents based on various conditions, such as _age_ and _skills_.

Additionally, we explore the use of the `$in` operator for matching any values in an array and the `$all` operator for ensuring all specified values are present.

This lesson provides essential skills for effective use of operators such as: `$in`, `$nin`, `$lt`, `$lte`, `$gt`, `$gte`, `$eq`, `$ne` (and many others) in querying MongoDB collections.



Combine Filtering Documents in MongoDB Collections ($and, $or, $in, $eq, etc)

Combine filtering criteria in MongoDB with logical operators like $and, $or; use $in and $all for array filtering in this lesson on document queries.

In this lesson, we learn that filtering documents from MongoDB collections can be achieved through the `find` and `findOne` methods.

We demonstrate how to use these methods to retrieve documents based on specific criteria, such as names or emails, and how to apply regular expressions for more general searches.

Additionally, we explore filtering by array values and using conditions like less than or greater than for numerical properties.


Filtering Documents in MongoDB Collections (find, findOne)

Learn to filter MongoDB documents using find and findOne methods with query criteria, regex, and array filtering in this lesson on document retrieval.

In this lesson, we learn that inserting documents into a MongoDB collection can be done using the `insertOne` and `insertMany` methods.

We demonstrate how to create new employee objects in JSON format and add them to a collection.

We also show how to view the inserted documents and their automatically generated IDs.

Furthermore, we discuss how to delete documents from a collection using filtering criteria.


Inserting Documents into MongoDB Collections (insertOne, insertMany)

Insert documents into MongoDB collections using the Mongo shell mongosh and MongoDB Compass, using the insertOne and insertMany methods

In this lesson, we learn that creating a MongoDB collection can be done easily through MongoDB Compass or the Mongo shell: `mongosh`.

We cover how to use the GUI to add a new collection and understand that there’s no need for a predefined schema, allowing us to store documents with varying structures.

We also discuss how to remove a collection when it’s no longer needed, demonstrating both methods for flexibility in managing our database.

We also see `find`, `countDocuments` and `drop` MongoDB collection methods in action!


Create or Remove MongoDB Collection

Learn to create and remove MongoDB collections using MongoDB Compass and the Mongo shell in this practical lesson on collection management.

In this lesson, we learn that MongoDB Compass is a graphical user interface for managing MongoDB databases.

We cover how to download and install Compass, create a connection to our local MongoDB instance, and troubleshoot any connection errors.

Additionally, we explore how to navigate the interface to view collections and documents easily.

This lesson provides a practical understanding of using Compass for MongoDB database management.



Access Mongo databases from MongoDB Compass

Learn to access MongoDB databases with MongoDB Compass. Install, connect, and explore data visually, locally and free.

Get started with MongoDB and Docker really quick 🔥 even if you have no backend/fullstack experience.

This lesson guides you through installing Docker Desktop and setting up a MongoDB image.

We explain Docker images and containers, and their roles in providing isolated software environments.

We run a MongoDB image in 2 ways: using the terminal and Docker Desktop

We demonstrates configuring port settings for a container and accessing the MongoDB shell (`mongosh`) to interact with the database.

We learn how to manage Docker containers, configure settings, and run commands inside the container.

Grab the CLI command: 🔥 `docker run --name some-mongo -d mongo:latest` 🔥

Install Docker to run local MongoDB Container

Learn to install Docker Desktop, set up a MongoDB image, and manage containers. Configure ports and access the Mongo shell

Sass is the most mature, stable, and powerful professional grade CSS extension language in the world.

scss

Learn the essentials of enabling semantic form validation HTML and styles in preparation to use our form design system with the validation solution of your choice.

We will add an SVG to our form descriptions when the error class is applied and look at a workaround to style the SVG through a Sass function.

Create Accessible Styles for Invalid Form Fields

Creating powerful and context-aware tools for Cursor IDE becomes straightforward when leveraging information directly from your current project. In this lesson, you'll learn how to build a custom MCP (model context protocol) tool that intelligently requests essential details—such as the current project path and conversation summaries—from your Cursor project.

Workflow demonstrated in this lesson:

- Define MCP tool parameters to request specific project details.
- Pass project path and conversation summaries into your MCP tool.
- Automatically write or update files within your current project using these parameters.

Key benefits:

- Automate tasks with precision based on your active project's context.
- Simplify interactions by creating AI-driven CLI commands tailored to your needs.
- Open endless possibilities for integrating external APIs and advanced automation.

Through this practical demonstration, you'll gain a versatile technique for enhancing your development workflow in Cursor IDE.

[https://github.com/johnlindquist/mcp-cursor-tool-starter](https://github.com/johnlindquist/mcp-cursor-tool-starter)

John Lindquist

Build MCP Tools Using Project Context for Custom Cursor IDE Automation

Setting up custom MCP (Machine Command Protocol) servers in Cursor can involve tedious steps, such as configuring node paths or referencing additional commands. This lesson shows how to streamline this process by bundling your MCP server directly into a standalone executable.

Workflow demonstrated in this lesson:

- Use a simple MCP server project starter.
- Run a single bundling command to create an executable.
- Right-click the generated executable, copy its full path, and add that directly to your Cursor settings.

Key benefits:

- Eliminates the need for complex node path configurations.
- Simplifies the setup and integration of custom MCP servers into Cursor.
- Makes the server executable instantly accessible within your Cursor environment.

By following this streamlined approach, you can quickly and easily integrate custom MCP servers into Cursor, making your development workflow cleaner and more efficient.

[https://github.com/johnlindquist/mcp-cursor-tool-starter]()

Easy MCP Server Setup in Cursor IDE with Bundled Executables

TanStack Router is the foundation for TanStack Start, which is gaining significant attention due to its innovative approach to application development.

This course focuses on getting effective TanStack Router, a modern and scalable routing solution for React applications. You will learn how to:
- set up and scaffold new applications,
- use file-based routing
- create nested routes
- manage dynamic route parameters and more.

The course covers advanced features like route loaders, caching strategies, and lifecycle hooks, which are crucial for enhancing application performance and user experience.

By understanding TanStack Router, you can build more efficient, type-safe, and maintainable applications, leveraging its integration with data fetching libraries like TanStack Query.

This knowledge is essential for developers looking to improve their routing skills and stay ahead in the field.

Up and Running with Tanstack Router and React

Learn TanStack Router for React: set up apps, use file-based routing, manage routes, and boost app performance.


In this lesson, we explore how TanStack Router integrates with the [native browser history API](https://developer.mozilla.org/en-US/docs/Web/API/History) to manage navigation.

As we navigate through different routes, the URL changes are stored in the browser's history, allowing users to use the forward and backward buttons to traverse their navigation history.

This functionality also **enables permalinks**, meaning users can copy and paste URLs to access specific routes directly.

Additionally, we learn how to programmatically interact with the history object to move forward or backward through the navigation stack, enhancing the user experience by providing full control over navigation actions.

This compatibility with the native history API ensures that TanStack Router applications behave similarly to traditional websites, offering a seamless and intuitive user experience.

Browse History in Tanstack Router

Browse history in TanStack React Router using the native history API for seamless navigation

In this lesson, we explore how to hook into TanStack Router's lifecycle hooks to execute custom logic during route changes.

The hooks we'll look into are: `onEnter`, `onStay`, and `onLeave`, which are triggered when entering, staying within, or leaving a route, respectively.

All hooks receive a detailed match parameter, providing information about the route's path, ID, and tons of other details.

This allows for the implementation of features like animations or logging when navigating between routes.

We also learn how to use these hooks to track and manage state changes as users interact with the application, making it easier to implement complex behaviors based on route transitions.

Hook into Route Lifecycle Hooks in Tanstack Router

Hook into TanStack React Router's lifecycle hooks for custom route logic and animations.

In this lesson, we learn how to handle not found errors in TanStack Router by using the `notFoundComponent` at both nested and global levels.

To trigger the display of a `notFoundComponent`, we must throw a specific error using the `notFound` function within a loader or other lifecycle method of a route. This approach allows us to provide custom error messages for specific routes or globally across the application.

We explore how to define a notFoundComponent within a specific route's configuration and how to set a `defaultNotFoundComponent` at the router global level, which applies to all routes unless overridden locally. This flexibility ensures that users receive meaningful feedback when encountering non-existent routes.

Provide NotFoundComponent at Nested Route or Global Level in Tanstack Router

Handle notFound errors in TanStack Router with notFoundComponent at nested or global levels.



In this lesson, we learn how to access dynamic route parameters using the `useParams` hook in TanStack Router.

When used with a specific `Route` object, `useParams` provides type-safe access to route parameters, ensuring that TypeScript knows the exact types of these parameters.

This approach eliminates the possibility of undefined/optional values, making it safer for accessing parameters like `employeeId`.

However, when using `useParams` globally without specifying a route, it requires an options object with `{ strict: false }`, which reduces type safety.

In this case, the hook can access parameters from any route in the application, but it does not guarantee their existence or type. This flexibility allows components to be reused across different routes, but it requires careful handling of potential errors.



Access Dynamic Route Parameters with useParams in Tanstack Router

Access dynamic route parameters with useParams in TanStack React Router for type-safe routing.

In this lesson, we learn how to reorganize file-based routes in TanStack Router to accommodate nested routing structures.

We explore how to create additional nested routes by converting files into directories, allowing for further nesting.

For example, to create a nested route like `/employees/$employeeId/edit`, we can create a **directory** (!) named `$employeeId` and place an `index.tsx` file inside it to define the route component for this nested route.

This approach provides flexibility in organizing files while maintaining the convention that file names and locations align with route paths. We also see how to adapt existing components and loaders to work with these reorganized routes, enabling features like edit forms or delete actions (or whatever) within nested routes.


Reorganize File-Based Routes in Tanstack Router

Reorganize file-based routes in TanStack Router for flexible nested routing.



In this lesson, we learn how to parametrize the loader for a nested route in TanStack Router.

We focus on a nested route like `/employees/$employeeId`, where the `$employeeId` is a **dynamic parameter**.

To fetch data for this route, we use a `loader` function that accesses the `$employeeId` parameter. This is achieved by using the params object available in the `loader` function, which contains the dynamic segments of the URL. We then use this parameter to call a function like `getEmployeeById`, which fetches specific employee details from an API.

We highlights that TanStack Router **automatically infers types** for these parameters, ensuring type safety for nested routes.

Parametrize Route Loader for Nested Route in Tanstack Router

Parametrize nested route loaders in TanStack Router using path parameters

In this lesson, we learn how to create nested routes and outlets in TanStack Router using file-based routing.

We start by creating a new `employees` directory and files to represent nested routes, such as `/employees/$employeeId`. The `$` symbol is used to denote dynamic parameters.

We then use the `<Link>` component from TanStack Router to create links to these nested routes, passing necessary parameters.

To render the nested content, we use the `<Outlet>` component (nested), which automatically renders child routes. This approach allows us to dynamically display stuff under a nested route.

All the time, the TanStack Router generator automatically updates the route tree based on file changes - our routing configuration remains consistent 🔥



Create Nested Route and Nested Outlets in Tanstack Router

Create nested routes and outlets in TanStack Router using file-based routing

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