Angular Firestore Query Array Contains

Introduction. Expressive queries with where. 本稿では、AngularのプロジェクトでCloud FirestoreのCRUD実装を行います。 新しいデータの作成と読み込み; 作成したデータを編集. Fired when a navigation is committed. There are 2 ways of using a search bar to query data: Query the data real-time from the database, meaning it will send a query on every keystroke. array of string (optional) schemes: Matches if the scheme of the URL is equal to any of the schemes specified in the array. You can query for documents without having to retrieve all of the other data in other subcollections. If the position is just before or just after the given values, relative to the sort order defined by the query. Just like in AngularJS, Angular provides us with its own service called HttpClient for making requests to servers. Before we jump into the specifics of the Angular Router, let’s talk about what routers do in general. There are Different Types of SQL Joins which are used to query data from more than one tables. There also an empty array of routing when you see in `src/app/app-routing. Using bitset, we can precalculate the existence all the subset sums in an array in O(n) and. js CRUD serverless with Firebase Cloud Firestore Cloud Firestore helps us store data in the cloud. Queries for counts of multiples in an array Given an array of positive integers and many queries for divisibility. Firebase introduced an array-contains operator that can be used with where to query array fields. each() function is an easy way to iterate over an array's elements. Furthermore, we don’t need to think about global database denormalization anymore - the single most confusing area for developers new to Firebase. Firestore has powerful querying syntax and the AngularFirestoreCollection provides a thin wrapper around it. on Sep 27, 2019 The daily used examples of Angular 8 REST API access and HttpClient with a comprehensive step by step tutorial. You can query for documents without having to retrieve all of the other data in other subcollections. js Firestore example - Vue. Angular 8 Firestore tutorial with CRUD application example – @angular/fire Cloud Firestore helps us store data in the cloud. It will use the Cloud Firestore database, and Firebase Authentication for the login system. In this tutorial, I will demonstrate how to get started with Firebase Cloud Firestore and also highlight the differences between Cloud Firestore and the existing Firebase Realtime Database. In this post let's see how to sort the columns in ascending or descending order in our data table. AngularJS expressions can also be written inside a directive: ng-bind="expression". This is typical when you want to search your main index as well as an index that contains a history of searches (to be used for autocomplete). OData (Open Data Protocol) is an ISO/IEC approved, OASIS standard that defines a set of best practices for building and consuming RESTful APIs. module('myModule', ['ui. However, there are some key filters in Angular 1. ng2-dragula is an Angular 2+ wrapper for the popular Dragula drag and drop library. This will trigger the Array dropdown to appear. It uses the RxJS library to handle asynchronous requests and provides many options to perform the HTTP requests. Notice how we call the a method in the array that we didn't declared before arr. We can query the database for all stories that contain a specific tag using Firestore's array contains query type. It was a hard mix but as you can see above, a lot of it is mostly the Angular code and not much Firestore. Angular, as we all know, is a JavaScript framework that makes it easy to build web applications. Consider the following example: var mainApp = angular. The AngularJS documentation is a bit vague about what the function returns, but I suspect it returns a JavaScript object with one key, value pair for each header, with the header name as the key (property name). Learn how to query an array in the Firestore database with the new "array-contains" option in version 5. My previous article, Client and Server-Side Data Filtering, Sorting, and Pagination with Angular NgExTable, describes the base structures and uses of the custom data grid tool. A QuerySnapshot contains zero or more DocumentSnapshot objects representing the results of a query. Angular is a platform for building mobile and desktop web applications. js CRUD serverless with Firebase Cloud Firestore Cloud Firestore helps us store data in the cloud. Drag & Drop in Your Angular Apps With ng2-dragula. Storing and iterating arrays comprises a good portion of the Firebase questions on StackOverflow. isArray(array) Returns true if a variable is an array, false if it is not. QuerySnapshot A QuerySnapshot contains zero or more DocumentSnapshot objects representing the results of a query. indexOf() method: Search array and return the position of the found value, if not found, return -1, if more than 1 element were found, return the position of the first found value:. If the array has multiple instances of the value you query on, the document is included in the results only once. UPDATED August 2019. A developer gives a tutorial on how to create an Angular front-end application, add authentication and host it on a Firebase server. Learn Web Design & Development with SitePoint tutorials, courses and books - HTML5, CSS3, JavaScript, PHP, mobile app development, Responsive Web Design. Remember —. You can query for documents without having to retrieve all of the other data in other subcollections. Hide button when logged in and show other buttons when not logged in html angular angularfire2 angularfire angular8. Angular makes use of observables as an interface to handle a variety of common asynchronous operations. There are no leading slashes in the path. Why is it that the string length of an empty array defers from the array size? c. jQuery: The Write Less, Do More, JavaScript Library. There are two ways to provide local data to chart. Snippets from the Firestore Data Modeling Course. The package includes helpers for database manipulation, JSON Web Token generation, validation and signing, authentication methods, methods for. link Simple autocomplete Start by adding a regular matInput to your template. toObject method to work correctly as soon as I add an array. There are 2 ways of using a search bar to query data: Query the data real-time from the database, meaning it will send a query on every keystroke. Angular uses this factory to instantiate View Definition which in turn is used to create component View. This post tries to show a few patterns and guidelines to help us with unit testing Angular applications after setting some minimum configuration. To directly find array elements that match a query criteria: Within the Query Section, choose Has array element(s) matching from the dropdown. I will be using the new Firestore service instead of the more established Real-time Database. Get unlimited access to the best stories on Medium — and support writers while you're at it. Create Your Own Wiki With Angular and Firebase - DZone Web Dev. Improve this sample solution and post your code through Disqus. addresses is an array of the SRV records available for hostname. The values that represent a position, in the order they appear in the order by clause of a query. I've tried to condense the tutorial down as much as possible without missing out any details. Under the quizgame directory, there should be a file called questionLoader. Firestore contains the title, background image, and tags array for each page. limitToFirst Sets the maximum number. Now, this is supported by Firebase on its cloud Firestore, and that is what we can leverage using AngularFire2 to design the code in your Angular application to do the query from the client side itself. Declarative templates with data-binding, MVC, dependency injection and great testability story all implemented with pure client-side JavaScript!. ContactsDetailComponent needs exactly that to get the id of a contact. $ npm install ui-select Install via bower $ bower install angular-ui-select. A collection of tips, tricks, and common mistakes you should know about when working with Firebase. After that, we define the firestore database. But usually we are interested in the url. issue_type , m. parse(str); THis won't work on IE before version 8 though. Angular HttpClient. Firestore stores your data in objects called documents, which are grouped into collections. CodeIgniter does not require that each database table be its own. Here the suggestions are tags for programming languages, give "ja" (for Java or JavaScript) a try. Cloud Firestore is a NoSQL document database that lets you easily store, sync, and query data for your mobile and web apps — at a global scale. fromIndex Optional The position in this array at which to begin searching for valueToFind; the first character to be searched is found at fromIndex for positive values of fromIndex, or at array. For this, the appropriate columns should be mapped to the fields property. Add routing and dynamic load of modules and all could go wild. AngularJS expressions are much like JavaScript expressions: They can contain literals, operators, and variables. Quick Setup with Angular CLI v6 or Later. VueJS & Firestore Stripped-Back - Tutorial Part 6 Sorting Data We’ve completed the CRUD elements of our app however there’s lots more to cover in building a useful app and we’ll break down the various subjects into short, individual parts. To remove the square brackets that surround the JSON output of the FOR JSON clause by default, specify the WITHOUT_ARRAY_WRAPPER option. one to many relationship in Angular & Akita. If you are new to model-driven forms, please refer to How to Build Model-driven Forms in Angular 2 for a basic rundown. NET to retrieve data from different sources and formats. Angular University 1,425 views. If you scroll back up to the Firestore data structure, you’ll notice that teams, templates, and users are all collections. It includes modules for the Realtime Database, Firebase Authentication, and now we’ve added Cloud Firestore to that list. Query String Standards (or the Lack Thereof) All this looked rather unsatisfactory to me, but, in a way, I was actually wrong. AngularJS expressions are much like JavaScript expressions: They can contain literals, operators, and variables. com/lessons/query-by-array-. comparator. The test is a function that is passed an array item and the index of the item within the array. We'll import @react-native-firebase/firestore and create this reference in our component:. That is followed by the report body, which has an ng-repeat directive that enumerates the categories. Reference for Query Products Use Cases Pricing Docs Support Language Bahasa Indonesia English Español – América Latina Português – Brasil 中文 – 简体 日本語 한국어 Go to console. Cloud Firestore is a fast, fully managed, serverless, cloud-native NoSQL document database that simplifies storing, syncing, and querying data for your mobile, web, and IoT apps at global scale. Angular Observable use as an interface to handle a variety of common asynchronous operations such as send observable data from child to parent component by defining custom events, handle AJAX or HTTP requests and responses, listen and respond user input in Angular Router and Forms. Query params are different from regular route parameters, which are only available on one route and are not optional (e. However, I wanted to do it with LINQ in this case. The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array. AngularJS is so hot right now, and it has been holding a stable position among the most popular development tools for a few years. Adding Server Logic. The answer is to make your own custom object, and then put that into the array. It's good to see this open source library getting integrated into. The Autocomplete widgets provides suggestions while you type into the field. Collections in Firestore are the equivalent of a ref in the RTDB with a huge list of child nodes that each contain objects. Given the simplicity of that URL, we might expect the router to store URLs as strings internally. You can read more about this in a post by Misko Hevery (See further reading no 2). It is a super simple cloud NoSQL database. It is a class called QuerySnapshot in Firestore that only has a few methods on it. Custom Elements and Web Components Demos. In this article we will learn about some of the frequently asked C# programming questions in technical interviews. AngularJS is so hot right now, and it has been holding a stable position among the most popular development tools for a few years. We can query the database for all stories that contain a specific tag using Firestore’s array contains query type. This HTTP trigger I have right now fetches and returns the current weather conditions in Boston. This query selects all documents in the inventory collection where the tags field holds either a string that starts with be or st or an array with at least one element that starts with be or st. The later object is to store the properties of element/control such as Checkbox. Collections in Firestore are the equivalent of a ref in the RTDB with a huge list of child nodes that each contain objects. If lat max, as defined in section 3. Firestore Single/Multiple Where Query Filter. angularjs-ng-repeat… I have a html table that contains an ng repeat directive and two button. This is not possible with Firestore because we can’t query data using a traditional database query like a complex where with multiple values. The idea is to use bitset container in C++. This will give you access to AngularFireModule and AngularFirestoreModule. There are tens of settings you can use for the function. I have a spring boot back end service behind Nginx as a reverse proxy. FireSQL is a library built on top of the official Firebase SDK that allows you to query Cloud Firestore using SQL syntax. Angular Router: Query Parameters. The array does not necessarily include all the political entities that contain an address, apart from those included in the formatted_address. If it should, enable the reshapeOnPush option. The :contains() is a jQuery selector which allows us to search text within the element and select it and perform an action on it. Before we jump into the specifics of the Angular Router, let’s talk about what routers do in general. QuerySnapshot A QuerySnapshot contains zero or more DocumentSnapshot objects representing the results of a query. Angular is a platform for building mobile and desktop web applications. But for each component instance Angular creates a separate view. This script contains code to load the questions into Cloud Firestore. Cloud Firestore is a NoSql Document database built for automatic scaling,high performance,Real time,and ease of application development. contains(). All developers when start working on an existing project debug a lot. parse(str); THis won't work on IE before version 8 though. I don't want to use a collection as the array will likely only contain 1-2 items max. This is typical when you want to search your main index as well as an index that contains a history of searches (to be used for autocomplete). There are no leading slashes in the path. That is, the property. 06/02/2016; 2 minutes to read; In this article. 0, after being replaced by @angular/common/http in 4. Call the Query's Documents method to get an. module('myModule', ['ui. Firebase offers different methods for storing data. Each row in the following table represents an entry in a single-field index:. Currently, this is only supported with one value, so don’t try chaining more than one of these in a single query. In this tutorial, we'll see how to call web service from jQuery AJAX. On January 31st 2019, Cloud Firestore was officially brought out of beta, making it an official product of the Firebase line-up. An ActivatedRoute is an object that contains information about route parameters, query parameters and URL fragments. It acts as a middleware between components and the store, leaving the components independent of the data source. AngularJS expressions can also be written inside a directive: ng-bind="expression". Pipelining isn’t a data structuring technique, but it drives our decision-making process. Your source data often contains arrays with complex data types and nested structures. In the first part, we learned how to authenticate against Django using the Django Rest Framework JWT package. Use the following command in your terminal to install them. Declarative templates with data-binding, MVC, dependency injection and great testability story all implemented with pure client-side JavaScript!. NET MVC; This is a simple example of how to implement server-side pagination in Angular 8 with a Node. index() Function. Firestore has added the "array-contains" query operator. I've tried to condense the tutorial down as much as possible without missing out any details. module function. In this tutorial, we look at how to pass the query parameters using the queryParams directive. addresses is an array of the SRV records available for hostname. The DevExtreme framework includes a data layer, which is a set of complementary components that enable you to read and write data. cfc of the application. and then goes through all components and fills data array for each view. The problem is when I'm typing I have to enter 5 as in order for the first title to disappear instead of 4 since is not a match and 7 as for the second title to disappear instead of 6, since is not a match. Please feel free to refer to the code here. Reverse the first and second arguments to sort in descending order. I'm using the Cloud Firestore of Firebase to store users and the android Searchview to provide search fonctionnality. npm i --save firebase @angular/fire. The require takes a string name (or array of strings) of the directive(s) to pass in. For this Angular Firebase example we created the following filters: Filter users by age; Filter users by name; Query Users by Age. of diverse data types however a document cannot contain. In the function, I convert its underlying data to a regular JS Array so. You can use regular expressions in a where filter, with the following syntax. The point is that when it comes building your Angular e-commerce app, you'll never be at a lack of intuitive, time-saving tools to get your site up and running as quickly—and painlessly—as possible. The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array. Ability to query nested data independently. `==`, and 'array-contains'. In the function, I convert its underlying data to a regular JS Array so. Firebase offers different methods for storing data. Language Integrated Query (LINQ) is a Microsoft. 1, is greater than π/2, then the North Pole is within the query circle, which means that parts of all meridians are within the query circle as well. Use the following command in your terminal to install them. Function: You can create a function to organize the sorting. This is a step-by. With AngularJS 2. In this post you will see how easily you can build back-end REST API for Angular sample app using JSON functionalities in SQL Server. All of the styling is done using CSS generated by the free online CSSTableGenerator. If you are new to model-driven forms, please refer to How to Build Model-driven Forms in Angular 2 for a basic rundown. Firestore Pros. Firestore Geoquery Query Firestore based on realtime geolocation data using RxJS. limitToFirst Sets the maximum number. Hope you liked this series and got some insights on DialogFlow, it’s integration with Angular Apps, Webhooks, building them using NodeJS, Angular Apps, and Material Design. index() Function. See the examples below. NET and call using jQuery AJAX. Each document stays up to date with the current weather conditions at that city. If you are looking for the best backend to go along with Angular, or even better if you are looking to do as little server-side development as possible and focus mostly on the frontend, then look no further: Firebase is the right choice for you. If the array contains a struct or an array, you can specify its respective metadata. angular query استعلام Firebase إذا كان الطفل التابع يحتوي على قيمة إذا وجدت نفسك تكتب array. Execute the script to insert data for our app into Cloud Firestore. select', 'ngSanitize']);. AngularJS: Different Ways of Using Array Filters In this article, we learn how to utilize AngularJS's array filter features in a variety of use cases. Firebase offers different methods for storing data. The following example demonstrates the TextBoxContainer component in action. const routes: Routes = []; Next, we will put all views routing and navigation inside that Routes array. AngularJS Interview Questions jQuery - Convert string to integer Virendra If you string contains spaces then only first number will be returned. ‌Firebase is Google’s mobile platform that helps you quickly develop high-quality apps and grow your business. Declarative templates with data-binding, MVC, dependency injection and great testability story all implemented with pure client-side JavaScript!. Compound queries. Add User Management to Your Angular + MongoDB App. orderBy("aProperty", Query. Laravel is a web application framework with expressive, elegant syntax. Of course, this will only work if your server understands this format as opposed to the default OData query format. Array of Complex data. LINQ provides an uniform and powerful SQL like query language in C#/VB. The convenient query array-contains-any has finally entered the JS SDK, so I tried using it! Since it has just entered the SDK, there is no shadow or shape in the official document yet (as of 10/30/2019) What is array-contains-any Until now, if you specified "array-contains" for "where", you could search for a document with a specific value in. Angular ngFor - Learn all Features including trackBy, why is it not only for Arrays? Last Updated: 26 April 2019 local_offer Angular Core In this post we are going to go over the ngFor core directive, namely we are going to go over the following:. If you are using Angular 5, consider upgrading to the newer HttpClient. where("members", "array_contains", 123). Reverse the first and second arguments to sort in descending order. I've tried to condense the tutorial down as much as possible without missing out any details. The array does not necessarily include all the political entities that contain an address, apart from those included in the formatted_address. If the first element within the array matches value, $. The Autocomplete widgets provides suggestions while you type into the field. Angular has its own HTTP module that works with Angular apps. Firestore Pros. I will be using the new Firestore service instead of the more established Real-time Database. Firestore to query by an array’s field value. angularfire2 related issues & queries in StackoverflowXchanger. Angular is JavaScript frameworks designed to help you to build modern single page apps. Using the takeUntil RxJS Operator to Manage Subscriptions Declaratively. It is easy for humans to read and write. This is not possible with Firestore because we can’t query data using a traditional database query like a complex where with multiple values. Otherwise, it contains an empty array. The outer array contains the rows and in inner ones hold the columns. Query parameters in Angular allow for passing optional parameters across any route in the application. I have an application implemented in Coldfusion and AngularJS. Angular is a platform for building mobile and desktop web applications. UPDATED August 2019. Angular makes use of observables as an interface to handle a variety of common asynchronous operations. The require takes a string name (or array of strings) of the directive(s) to pass in. About Kotlin: – Kotlin is the programming language that targets the Java platform. In this article we will learn about some of the frequently asked C# programming questions in technical interviews. Let's assume you're using the formControl directive from ReactiveFormsModule to track the value of the input. Welcome to LINQ Tutorials. The answer is to make your own custom object, and then put that into the array. You can query for documents without having to retrieve all of the other data in other subcollections. Essentially, regexp is just like an operator in which you provide a regular expression value as the comparison value. Declarative templates with data-binding, MVC, dependency injection and great testability story all implemented with pure client-side JavaScript!. Array: Use an array if you need more than one object property to determine the sorting order. UI component infrastructure and Material Design components for mobile and desktop Angular web applications. You can use a regular expression in a where clause for updates and deletes, as well as queries. before: boolean. orderByKey Boolean to order by Firebase Database keys. x is in long term support. isArray(array) Returns true if a variable is an array, false if it is not. String: If the array is an array of objects, you can sort the array by the value of one of the object properties. Angular 2 starting slides. You can send all requests individually and Firebase will respond with data as soon as it becomes ready. Django is a high-level web framework based on Python that provides rapid development and clean design solution whereas the Laravel framework is also web application framework with elegant syntax and with different features such as routing, sessions. UI component infrastructure and Material Design components for mobile and desktop Angular web applications. Your source data often contains arrays with complex data types and nested structures. Firebase's latest NoSQL database service: Firestore is currently (at the time of writing this article) in beta and provides a faster, lightweight, cloud hosted, scalable database solution for developers to use with their applications. Home can also be read or written by calling. I wan't to make input type and button (using "id" in red color) in payment array and result with the bold value. Looping Over an Array. Let’s imagine you have an array of document ids. js ) from the application’s path. In this post, I will be outlining how we can easily render an SSRS report within a Web-API. So let's demonstrate Create Read Update and Delete Operations in an Angular 5 project. This is done with flatMap. Call a local script on the server /api/getWeather with the query parameter zipcode=97201 and replace the element #weather-temp's html with the returned text. Each row in the following table represents an entry in a single-field index:. See section 3. The datasource is a simple JavaScript array, provided to the widget using the source-option. But usually we are interested in the url. Angular is a framework for building client applications in HTML and. Some of these components are reusable UI components (e. Notice how the report header uses the Angular filter called "date" to format the date value. orderByKey Boolean to order by Firebase Database keys. I have the following JSON data that contains the names and salaries of employees across a number of days (from 1 to 5). Query params are different from regular route parameters, which are only available on one route and are not optional (e. The query string commonly includes fields added to a base URL by a Web browser or other client application, for example as part of an HTML form. I recently needed to select a few products from a database where the product ID matched up with a list of IDs. Note: This plugin is still under development, and some APIs might not be available yet. The code below uses this data model to follow/unfollow users & query the most recent posts from users that are being followed. In this example we are going to filter Users older than a selected Age. Query String Standards (or the Lack Thereof) All this looked rather unsatisfactory to me, but, in a way, I was actually wrong. May 4, 2015: added the section Resolving Issue of Passing String List or Array and the test page using the AngularJS. Let's see how to work with query parameters. Tags angular-ui-router, angularjs, angularjs-service, javascript AngularJS and Typescript – Injecting Services I have been writing AngularJS apps for awhile now, but Typescript is new to me, and then adding in AngularJS to Typescript is a bit different than I am use to. callback is invoked only for indexes of the array which have assigned values; it is not invoked for indexes which have been deleted or which have never been assigned. Introduction. orderByPriority 1 Boolean to order by Firebase Database priority. js) from a content delivery network (CDN) so that you don’t have to download AngularJS and place it in your project. Returns (Array): Returns the new array of grouped elements. function(value, index, array): A predicate function can be used to write arbitrary filters. We’ll set up a new Angular 5 project from scratch and you’ll learn how to install and make use of Apollo Client to retrieve data from a GraphQL server endpoint and then display those data in your Angular web application. The problem is when I'm typing I have to enter 5 as in order for the first title to disappear instead of 4 since is not a match and 7 as for the second title to disappear instead of 6, since is not a match. Update, November 27, 2017: This post explains the Http service used in Angular 2. Firestore allows you to set up a more structured database together with a more powerful query API. Laravel is a web application framework with expressive, elegant syntax. In this section, we are going to explain how to query collections using Firestore. The documents can be accessed as an array via the docs property or enumerated using the forEach. 0 on the way, it will probably dominate for years to come. Note: This plugin is still under development, and some APIs might not be available yet. We also recommend specifying the pushAggregationTimeout to reduce the number of updates and recalculations. Have you ever worked with arrays and felt you weren’t able to put in all the data you wanted? Have you tried making two arrays and syncing all the data between the two? Sometimes you just need to store more than one thing. Instant PHP Platforms on DigitalOcean, Linode, and more. The DevExtreme framework includes a data layer, which is a set of complementary components that enable you to read and write data. Abstract We describe the characteristics of the BIMA millimeter wave array at Hat Creek, California. addresses is an array of the SRV records available for hostname. Component still has to obey general design. Add optional parameters to your routes in Angular 2+ apps with query parameters. Only if the test returns true will the item be in the result array. To make a read-only copy of a DataTable (optionally filtered to show specific values, rows, or columns), create a DataView. The parameters passed in url along with function name are directly received inside the methods. Query helpers: order - Creates order query object with given field, ordering method and pagination cursors. Home can also be read or written by calling. A QuerySnapshot contains zero or more DocumentSnapshot objects representing the results of a query. (この記事は先日2019年9月22日に開催された技術書典7にて頒布した『りあクト! Firebaseで始めるサーバーレスReact開発』の「4-6. Arrays haven't always been the best data structure for multi-user environments like Cloud Firestore. Learn software, creative, and business skills to achieve your personal and professional goals. Read from a Google Firestore database — swap hardcoded drone cards with dynamic cards. Array: Use an array if you need more than one object property to determine the sorting order. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: