Chapter 2:
Build your user interface

Let’s build your UI using Anvil’s drag-and-drop editor.

Step 1: Rename your Form

Click on ‘App’ in the Sidebar Menu to open the App Browser. The App Browser lists the main parts of your app. You’ll see Client Code, Server Code and Assets. Client code is code that runs on the user’s browser and is responsible for the app’s User Interface.

For more information on the difference between client and server code, read this explanation

Forms are the pages that make up your Anvil app. When you create a new Anvil app, it will already have a Form added called Form1.

Click on ‘Form1’ to open the Design View of that Form. This is where we will drag and drop components to build the UI.

Rename ‘Form1’ to ‘Homepage’ by clicking the three dots menu and choosing ‘Rename…’.

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Step 2: Add a Button component

We’ll construct the UI by dragging-and-dropping components from the Toolbox into the Form.

Drop a Button onto the page. Our users will click this button when they want to add a new news article.

Drag and drop a button from the Toolbox onto the Form

Below the Toolbox, you’ll see the Properties Panel, where you can edit the styling and behaviour of your components.

Select the Button you just added to the page, and change its name from self.button_1 to add_article_button. We’re changing the name of our Button to make it easier to identify from code.

Next, change the text property to ‘Add an Article’. Scroll down to the ‘Icon’ section, and add an icon to the Button by clicking the . This allows you to search for an icon to use. Choose the plus-circle for this example.

Editing the name, text and icon properties of the Add an Article button

Finally, let’s change the look of the Button. Roles are an easy way to style components to fit the app’s theme. In the ‘role’ dropdown menu under ‘Appearance’, chose filled-button.

Location of the role drop down menu in the Properties Panel

With those changes applied to its properties, the Button should look like this:

Finished button with the filled-button role applied and the text changed to + Add an Article

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Step 3: Add a create/update Form

Next, we’ll build the UI for Creating and Updating news articles. We can save work by using the same UI and code for both! (We talk about this more in our CRUD best-practice guide.)

Add a new Form to the app by opening up the App Browser and clicking the three dots menu next to Client Code.

Then click ‘+ Add Form’ and choose the Blank Panel template. Rename the newly added form to be ‘ArticleEdit’ (in accordance with our recommended naming convention).

Adding a new Blank Panel Form to the app and renaming it to ArticleEdit

The ArticleEdit Form will ask our users for the ’name’, ‘content’, ‘category’ and ‘image’ for each article they want to add to the Data Table (we’ll populate the ‘created’ and ‘updated’ columns programmatically).

We’ll use Labels for our input prompts. Drop four Labels onto the page, and change their text properties to:

Title:
Content:
Category:
Image:

Creating the name and content inputs for the ArticleEdit Form

We’ll then need user input components for each of these Labels. Drop the following components onto the page, renaming them as you go. Giving the components a more descriptive name makes them easier to identify in code.

Title: TextBox, rename this title_box
Content: TextArea, rename this content_box
Category: DropDown, rename this category_box
Image: FileLoader, rename this image_uploader

We’ll also add a placeholder to our DropDown. Select the DropDown you just added, check the ‘include_placeholder’ box, and set the placeholder to ‘choose category’.