And because it's JavaScript, you can write custom JS to manipulate the data how you want. Dot notation can be limiting (properties can't start with a number), but adding a . Sets the value of state.value at a specified location. After saving query2, add an event handler to your button that triggers the JavaScript query. You can import shared queries from the Query Library into your Retool apps. An example for a library that won't work in the browser due to not having a browser build: https://unpkg.com/browse/[emailprotected]/. Until then, those values are undefined. Here's an example of additionalScope being used in an app: The variable triggeredById returns the name of the component that triggered a query. Let's say you want to make a string lowercase, just write {{ textinput1.value.toLowerCase() }}. In the triggered query, keys passed in the additionalScope object are only available after the the JavaScript query runs. Shows a notification message on the top right corner of the screen for duration seconds (default 4.5s). If you're brand new to JavaScript/programming in general, there are a few external resources that can help you get started. Once the modal comes up, press on the Libraries tab. Use the model browser to see what the values actually are! For example, you could add papaparse by adding the URL https://cdnjs.cloudflare.com/ajax/libs/PapaParse/4.6.0/papaparse.min.js to the Libraries section. Build internal tools, remarkably fast. To output a value from a set of {{ }}, it needs to be a self executing function, method, or single value like {{ query1.data.map(row=>row.id) }} or {{ query1.data.id.length }}. Use this to display messages like error messages after a query fails. When building apps in Retool, anything inside {{ }} is JavaScript. HTML | Retool Component Library HTML A container for custom HTML and CSS code. If you return a Promise, Retool waits for the promise to resolve before considering the query complete. Because anything inside of {{ }} is just JavaScript, you can manipulate the variables in Retool. Organization-level JavaScript will be loaded when you open any application in your organization. No License, Build not available. It's a non-empty string (truthy). This examples makes an API request for each row in a table, and then shows any errors returned Here's an example transformer that takes the results of a database query, filters out for approved users, and returns an array with their credit_amount multiplied by 10: You can also manipulate the components in your Retool app programmatically, by Scripting Retool. This script triggers a query for each item in an array. Each component includes documentation on supported JavaScript methods. The React JS JavaScript library gained worldwide popularity. The Query Library lets you create, run, and share queries across your organization and between Retool apps. This function declares cached query results invalid. Retool even supports importing your own Custom code + NPM modules! Pass in { newTab: false } to open the app in the current tab. Because it's all JavaScript, Retool can handle any JSON shape returned by databases and API's. You can add custom JavaScript code at both the application and organization level. JavaScript has the following common data types, and all are valid in Retool. Since the API endpoint at https://approvals.tryretool.com/api/users/approve doesn't exist, all the requests fail. To avoid confusion, I'm going to capitalize Object when we're referring to the specific data type that looks like this {name: "Sparta", age: 9}, rather than the general term object which broadly refers to data in JavaScript. This means that if your library is dependent on external services or requests it will likely not work for those functions. You also have the option to choose a specific version instead. If JavaScript ran directly on your page, other people in your org could inject malicious scripts to end users, including yourself. The linked page does not exist (or is private). onSuccess is a callback that's executed when the query successfully finishes running, with the data of the query as an argument. The key must be a string and the value can be any type. We can use the moment library (an external JavaScript library which allows you to format date and time, pre-installed in Retool) to fix this. Now click the Submit button to test the app. With a Postgres query named query1.data, you can download the data as a CSV using utils.downloadFile(Papa.unparse(formatDataAsArray(query1.data)), 'test_csv', 'csv'). Queries in the library are similar to functions in JavaScriptyou can define variables in them and they return a result. A: Truthy. You can, however, import libraries. You can then call this query inside across multiple Retool apps, so that youre not copy pasting the same query everywhere. This is referred to as nested data, which is how Retool queries to your database or API will return data. All of the components and queries have names: for example, textinput1, or query1. You can use JavaScript on the query.data value returned from the query you just ran. You can reference this inside of {{ }} in any query to return the name of the component that triggered it. For example, set the value of a Text component to be {{ table.selectedRow.data.first_name }}, and the Text component will change based on the selected row of the table. 2. If you want to return a value from the query, you can pass it in as a parameter to the Promise's resolve function. If you want to see a list of all available variables on a page, open up the Model Browser at the top of the page. See our Component Library for component methods. Because JavaScript is such an integral part in building in Retool, we'll be going over specific JavaScript concepts that are particularly important in Retool. It is totally accessible and reusable and produces HTML, CSS, SVG, or MathML output. In this case, dot notation is better than bracket notation since a [ will not bring up the autocomplete menu. Application-specific vs. organization-specific libraries. This section lists the global variables used in your app and the associated variable details. React was designed to make interactive UI creations painless. It also has the data key, the most important key for queries. A value surrounded by quotes. This database stores user informationid, name, email and so on. Because of JavaScript's under-the-hood type casting, all data is either true or false. Retool offers 3 main ways to view this query data: the Query Preview, the Left Panel and the (green) Value Preview. Organization-specific Libraries In your app you might use select * from users where id = {{ textinput1.value }}, but in the Library, there are no other objects to reference. Note that like in the regular Retool app, you can use JavaScript inside {{ }}. For security reasons, all JavaScript runs in a sandbox. Imagine you have a database. Sets the clipboard's content to the provided string value. Ternaries are a one-line version of an if else statement (MDN docs here). MathJAX, true to its name, is a cross-browser javascript library that can display math notations and uses markup like LaTeX, ASCIIMathML, and MathML. formatDataAsArray and formatDataAsObject. Downloads the current Retool page as a PDF. Opens a URL (string) in a new tab by default. Data in Retool can be manipulated using JavaScript. Let's say you want to make a string lowercase, just write {{ textinput1.value.toLowerCase() }}. This snippet programmatically triggers a query. It's a compact text-based format that is surrounded by curly brackets and contains double quoted strings for keys and values. condition ? You can write JavaScript almost anywhere in Retool to manipulate or read information about components. To learn more about importing libraries, read Preloaded JavaScript and Libraries. Retool admins can configure who has access to the Query Library via user groups. In Retool, JavaScript can be written between {{ }} or directly in the JavaScript query type, which we'll get into later. A comparison operator compares its operands (the values before and after the operator) and returns true if the statement is truthy, or false if the statement is falsy. Once you write a SQL query to get this data from your database into Retool, how would you display this data? We're going to go over a few commonly used JavaScript methods in Retool that would help accomplish this. It's a non-empty string (truthy). If the query is triggered by another query, triggeredById returns undefined. Create a query using the RestQuery (restapi) resource. To get started, create a new query in the bottom pane and select the Run JS Code (JavaScript) resource. {{ getPeople.data }} returns the following data. Add a Button and two Text components to your app. The onSuccess or onFailure callback is called after the function completes. You can use the following snippet to clear state after a query runs. Since everything in JavaScript is either truthy or falsy, the condition section can be a statement with a comparison operator (e.g. While selecting a specific version of an imported query in your Retool apps, you can use this history view to verify the differences. Anything you can see there can be accessed in Retool. A quick breakdown of important JavaScript methods for building in Retool. Exploring objects using the Model Browser If you want to see a list of all available variables on a page, open up the Model Browser at the top of the page. See Caching in Retool to learn more about controlling query cache. This section lists the temporary state variables used in your app and the associated details. JavaScript queries are a special query type in Retool that allow you to write multi-line JavaScript, trigger other queries, download data from your app, set temporary state to store data in your current browser session, etc. This section lists the queries used in your app and the associated query details. For example, this script generates a random number. Everything is truthy, except for the following 7 falsy values: Q: Is "0" truthy or falsy? Only admin users can add preloaded JavaScript at the organization level. The next time a query is triggered, it returns fresh results. That means that inside of your preloaded JavaScript, you won't be able to use jQuery, or other hosted libraries to create your own components, listen to events on the Retool page, etc. Many libraries can be loaded this way. For example here we can see textinput1 and query1. logoImageFile Logo image file (on-prem deployments only). There are two main concepts at play here: accessing data in an Object and accessing data in an array. It evaluates to just 0 (falsy). This JavaScript library created by Google makes it so convenient and easy for developers to develop more interactive applications through the reuse of HTML elements and create custom elements by simply using HTML, CSS, and JavaScript. This data can be accessed in the data property of the query, like Create a JavaScript query named query2 and add the following JavaScript. As of now, once shared, a query cannot be unshared. String, Format of Retool data (other queries, components, etc) to be used in the query, Doesn't need a return value, can just be used to run methods listed above, Below a value input after clicking in said input, Combines elements from an array into a string, with an optional separator (commonly a space) .join 's reverse function is, Returns the position of the first occurrence of the given value, Returns a new array with the elements from the original array that match a specified condition, Returns a new array with the results of running a specified function on each element of the original array, Reduces the array to a single value by running a provided function for each value of the array (from left-to-right), Useful to sum all values in an array, and can be done in between, Left Panel (also named the Model Browser). There's a lot of overlap between JavaScript Basics and JavaScript in Retool, so if you're already familiar with the basics, feel free to skip this section and jump straight to JavaScript in Retool! For example if you want to iterate over a CSV file and call an API for every row in the CSV, you could do something like this: See more about how to write JavaScript queries here. Create forms using the JSON Schema Form component, Upload multiple files through a GCS / S3 resource, Certificates and internal certificate authorities, Manage secrets with environment variables, Manage Retool deployments with a hub and spoke model, Build an inventory management app on Retool Mobile, Build a site inspection app on Retool Mobile, Writing a query for any resource (SQL, Firebase, REST, etc. Each object (in bold) will have its type next to it (in gray) like {} or [], as well as its length in number of items or number of keys. Assemble highly polished interfaces with our extensive library of UI components, write queries to interact with data, and use JavaScript almost anywhere. Users only have access to queries if they have access to the resource used in the query. Once you define your preloaded JavaScript you'll be able to use your custom helpers inside {{ }} snippets, in Transformers and JavaScript. Retool also supports importing your own Custom code + NPM modules! You can also add custom preloaded JavaScript libraries to all applications in an organization. This is one of the most important concepts in Retool. Then, you'll have papaparse available inside all your JavaScript queries, {{ }}, etc. Common data type when working with APIs. This is useful if you want to do things like filter, transform, and even join different data sets. Here's some quick examples! A: Truthy. Since true and false are reserved keywords in JavaScript that refer directly to the Boolean type true or false, we say "truthy" or "falsy" as the category that data can fall under. You can use this mapping function to format the data to be recognized as dates, which means Retool will interpret the data and present it a bit more logically. Now let's learn how to actually access, and use, this data! You can clear the localStorage with the JavaScript function localStorage.clear(). To add libraries at the application level, click on the More Settings menu (three dots) next to the Share button in the editor navigation bar, then press on Preloaded JavaScript and Libraries. The most common example of {{ }} in action: Since you can't write if else logic in between {{ }} , but you want to conditionally return data, you can use ternaries. Today, Retool is excited to announce a new library of 90+ UI componentsall tailored and optimized for internal tools and business apps. Again, it's the same as the data we see above in the Left Panel screenshot, just presented differently. additionalScope keys are undefined until run. You can use it anywhere you can use JavaScript with {{ moment() }}. More on that below! To do so, click on your profile picture dropdown in the upper right, then go to the Organization Settings page and navigate to the Advanced tab. Assemble components Design and usability You can also use the reject function from the Promise to fail the query. Because it's all JavaScript, Retool can handle almost any JSON shape returned by databases and API's. Go ahead and read our JavaScript query docs on all the cool things they can do! It can perform validation of required field, minimum or maximum length, email and URL formats, regular expression patterns, and custom rules. When working with dot notation, property identifies can only be alphanumeric (and _ and $). https://www.unpkg.com/browse/[emailprotected]/umd/react.production.min.js. Besides manipulating components and queries, JavaScript queries can also return data. menuItems The list of menu items and submenus displayed in the component. Drag and drop to build UI, write code anywhere, and publish your apps in record time. This function clears the .data and .error properties on the query. It has a rich API. Application-specific JavaScript gets loaded only in the application in which it is defined and it's easier to write, edit, and reuse within an application. Q: Is -0 truthy or falsy? To do so, click on your profile picture dropdown in the upper right, then go to the Organization Settings page and navigate to the Advanced tab. To download base64 encoded files, use the following syntax. Custom components, HTML components, and elements embedded in IFrames are excluded from PDF exports. When in doubt, we suggest using app-specific JavaScript! You can write JavaScript almost anywhere in Retool to manipulate or read information about components. You can then use {{ getProducts.data }} in a Table Component to display it! You'll need to convert the string into a proper date type before sending it to your database; this is where Moment comes in. Every time a query in the Query Library is saved, Retool stores a snapshot, similar to a commit. To access the array of ids, we can use {{ getPeople.data.id }}. The Left Panel has information about all of your query, component, transformer, temporary state, global variables (ie current_user or urlparams) data in Retool. Let's say we want to access the array of ids to use in a dropdown to allow end users to select the user they'd like more info on. From dashboards to analysis and more, Retool provides a quick and easy ramp for users to show their data in meaningful ways. See our API docs for components or databases for more details. Again, all 3 screenshots are showing getUsers.data, just presented in different ways. In this case, you would trigger query1 for each row in table1, and pass in the id value from each row. While private, they can only be read and updated by the creator. Q: Is "false" truthy or falsy? Saves a key-value pair to localStorage. You can also pass in an array of items that are dependent on query triggers, and use Promise.all() to return all of their results in an array of the same length. Implement retool-react-admin-tutorial with how-to, Q&A, fixes, code snippets. Add a Table component to your app and copy this JSON into the Data attribute. Downloads the data value using fileName (string) and fileType (string) if possible. For example, you can access a query's data property via query.data, and a Text Input component's inputted value via textinput.value and a Table component's selected row via table.selectedRow.data. In the example below, the getPeople query has the data key/property (the syntax is interchangeable here), which has the keys first, id and last, which are the column names from our people table. Once the modal comes up, press on the JavaScript tab. You can also pass additional arguments to customize the behavior of a query. Expand one of the variables on the left to see its values. Because it's all JavaScript, Retool can handle almost any JSON shape returned by databases and API's. Just write a quick 1-liner to transform data, and make it work in your app. Components in Retool are generally read only, and are only modifiable with specific methods, found in the Scripting Retool docs linked above (and here). Most SQL databases store dates in a date or datetime type column, so if you have a string date (like '12/25/1995'), your database will likely reject it. Set the Action type to Post and use this URL: https://approvals.tryretool.com/api/users/approve?email={{table1.data[i].email}}. To remove a single key-value pair from localStorage, set the value to undefined, like this: localStorage.setValue("removeThisKey",undefined). Text Input | Retool Component Library Text Input An input field to enter a single line of text. You guessed itJavaScript! Create forms using the JSON Schema Form component, Upload multiple files through a GCS / S3 resource, Certificates and internal certificate authorities, Manage secrets with environment variables, Manage Retool deployments with a hub and spoke model, Build an inventory management app on Retool Mobile, Build a site inspection app on Retool Mobile, answered questions on our community forums, https://github.com/BenjaminVanRyseghem/numbro, Run an API request for each row in a table, Trigger a query for each item in an array. And all of them are globally available on the page you're in, so you can refer to them elsewhere on the page: for example, {{ textinput1.value }} or {{ query1.data }}. An un-ordered data structure with key:value pairs surrounded by curly braces and separated by commas. You can even do more complex things, like map over an array of objects, and pick out one of the fields: {{ query1.data.map(i => i.name) }}. 1 1. Just write a quick 1-liner to transform data, and make it work in your app. Retool provides the following utility libraries. This preview shows the raw data. When this query is triggered, you can access the number generated using the .data property: {{ generateRandomNumber.data }}. Values in an array can be accessed using the index, or numeric location, of the target. Custom Styling Pass in { forceReload: true } to prevent client side routing and force a page reload. You can also reference the values of Retool components from within {{ }}! In the following example, the query takes two seconds to run, and returns the value 12345 through the resolve function. Data objects have properties that can be referenced. You want to make sure you are loading the minified, UMD build from CDN instead of index.js file, because that file can often include imports and requires calls that require preprocessing before being made usable in the browser. Data objects have properties that can be referenced. There are two data conversion methods that are special to Retool: Number (integer, float/decimal, etc.) The URL string must start with http:// or https://. For example, {{ getProducts.data }} returns the following data where getProducts is a SQL query to get data from a products table in a database. See documentation on temporary states for more details on using state.setIn(). in the process. As you type in textinput1, you can actually see the textinput1.value field updating on the left hand panel! More on pulling data from your components here. For builds that will properly load the library in the browser inside window, they are usually named umd/.min.js or browser/.min.js , or lives inside the root folder as .min.js. Name Description logoImageSrc URL of the logo image. Logical operators will also return a boolean depending on the truthiness (or falsiness) of the statement, with the exception of the || and && operators which can return a non-boolean, depending on the operands. Everything in JavaScript is an object, which means it's just a thing with some properties (like a length) and some built-in methods that can manipulate this thing. You can return some data, then use the JavaScript query's data in the table's value field, but table1.data = something won't work, nor will something like table1.hidden = true. The best React component library is in Retool Retool components are optimized for the things that matter most for internal tools, with UI and formatting options to display and edit data from any source. A sign of linking the wrong file is if you get require is not a function or module is undefined in the console when you start up your application. The options are an object with any of the following properties: The additionalScope option allows you to define or override variables used in the query being triggered with any key/values present in the additionalScope object. Retool is all about showing and manipulating your data with drag-and-drop buttons, tables, maps, etc. We'll learn how to access specific data returned from your database (via queries) so you can start using that data in your apps. Supported notificationTypes are "info" | "success" | "warning" | "error". With a REST query named RESTQuery1 that fetches a PDF from http://somewebsite.com/metrics.pdf, you can call utils.downloadFile(RESTQuery1.data) to download metrics.pdf. Numbers can be true or false, words/strings can be true or false. You can think of programming at a high level as just: manipulating data with logic. This section lists the components used in your app layout, and the associated component details. 3 min read Hooks and state 102: the Dependency array in useEffect () One of the more confusing aspects of the useEffect () hook is the dependency array. (Those Retool-specific methods must be run from a JavaScript query, and complicated if-else statements are easier to manage inside of a Transformer, which we'll get into next.). If you found this post, though, we assume you might not be as satisfied with Retool and are probably looking for some decent alternatives. Quick note: for security reasons, all JavaScript runs in a sandbox. Here's an example where we first define an Object with the name obj1, then access the value held by the 'greeting' key: Retool will offer autocomplete options when writing JavaScript. You can use JavaScript data conversion methods to turn those strings into sum-able integers! The first key points to an array of first name strings. Features Comprehensive. For example, instead of copy pasting the same query on monthly revenue into each app, you can just maintain one in the Library. Values in an Object can be accessed using either dot notation (object_name.key_name) or bracket notation (object_name['key_name']). You don't want to use this file, as it contains require calls: You can even copy the value to your clipboard. In this example, you could now use {{name}} in query1. Because anything inside of {{ }} is just JavaScript, you can manipulate the variables in Retool. For example, you can: For details on how variables work with Reusable queries, check out this guide on reusing queries. {{ getPeople.data }} is a nested Object (an Object with Objects with arrays inside). Moment is a preinstalled JavaScript library that helps you manage dates. The rest of this page covers some examples, but you might also want to check out the Component Library. Single quotes are not valid. Start shipping apps that move your business forward. If a query is triggered by a table action or a button in a list view, the variable i is defined in the query and returns the component's index in that table or list view. MathJAX beautifully represents maths in different browsers. That being said, please provide a minimal reproducible example using a snippet. Note that only private queries can be deleted. The Preview option will show your data formatted as a table, with easy to view headers/column names and values. Pass in { queryParams: {key:'value'} } to add query parameters. You can't run any Retool-specific methods from inside them, like text1.setValue(). As the query runs on each row, the status updates and errors are displayed. If you're running into any issues with writing JavaScript or scripting in Retool, check out some of the answered questions on our community forums, or ask one of your own. The .trigger function also returns a promise that resolves to the query's .data property. Using {{id}} inside query1 evaluates as the provided row id when it's run. Any communication that needs to happen through the sandbox must be routed through an official integration like a REST API. Adding 100 to a value would just be: {{ textinput1.value + 100 }}. onFailure is a callback that's executed when the query encounters an error while running, with the error as an argument. In JavaScript, essentially all data is referred to as an object. Queries are best for calling JavaScript methods (ie query.trigger(), state1.setValue(), etc) while transformers are best for returning a single value or data object. You can read more about query methods below. Managing data types is a fundamental concept that comes up fairly often when manipulating data in Retool. This can affect performance, especially if you are loading complex JavaScript functions that aren't being used in every app. This is useful for adding custom logic to your apps. If table1.data exists (has data, and is not empty), the condition will evaluate as true and the first action will execute. In this case, you might write select * from users where id = {{ user_id }}, and the Library would pick out user_id and display it on the right. Google Polymer. Rather than doing this in Transformers, you should create queries of type Run JS Code. To prevent that, we execute all JavaScript in a separate iframe, on a different domain. If JavaScript ran directly on your page, other people in your org could XSS you. To get started, create a new query in the bottom pane and select the Run JS Code (JavaScript) resource. For any query in the Library, you can go through the entire history, see the differences between saves, and revert to a specific version. Similarly, whether you need to find the row of data based on the id selected from a Dropdown component, or add new values to the array stored in Retool's temp state (docs here), you'll need to use JavaScript!
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