Angular - Loading images on the fly

After scouring numerous resources, I couldn't find a resolution to my issue.

For your information, I am utilizing ASP.net Core 2.0's default angular project

In the process of developing an Angular application, I am faced with the challenge of loading a customer's logo based on an external configuration.

The file needs to be loaded into my home.component.html

To tackle this, I created a "CustomerService" with a getLogo() function that returns the path to the customer's logo.

Here is the folder structure: FOLDER STRUCTURE IMAGE
The assets directory houses the images, and the HTML snippet below resides in home.component.html

Since using "../../"" hasn't proven effective, my initial query revolves around finding a workaround.

I've structured the HTML as follows:

<img src="../../assets/timeblockr-logo.png" />
<img [src]="customerservice.getLogo()" />

This is what the CustomerService's getLogo function returns:

getLogo() {
    return "../../assets/timeblockr-logo.png";
}

** UPDATE: SUCCESSFULLY RESOLVED!! **

It turns out that I needed to use:

getLogo(): string{
    return require("../assets/timeblockr-logo.png");
}

A big thank you to @Niladri for providing the solution to this particular issue!

angulartypescriptasp.net-core-2.0

Answer №1

Make sure to update your image source without using ../../. The image paths are relative within the output folder. Here's how you should adjust it: 

<img src="assets/timeblockr-logo.png" />
<img [src]="customerservice.getLogo()" />

Your function should look like this:

getLogo(): string {
    return "assets/timeblockr-logo.png";
}

According to your comments, you will need to modify the "assets" entry in your .angular-cli.json file as follows: 

"assets": [
    "assets",
    "favicon.ico",
    { 
        "glob": "**/*", 
        "input": "./assets/images/", 
        "output": "./assets/images/", 
        "allowOutsideOutDir": false 
    }
],

Answer №2

When working with your Angular project, Webpack utilizes url-loader to handle the loading of images that have file extensions like .png, .jpg, and so on. Check out the code snippet below from the url-loader repository on GitHub: https://github.com/webpack-contrib/url-loader

module.exports = {
  module: {
    rules: [
      {
        test: /\.(png|jpg|gif)$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 8192
            }
          }
        ]
      }
    ]
  }
}

The configuration above specifies which file extensions to target for image files. However, in order for Webpack to correctly interpret the image paths, you need to utilize the require statement when referencing the actual path of the image. This step is crucial especially in .ts or TypeScript files where the image path is being used as a variable or returned from a method.

For instance, the following 

<img src="../../assets/timeblockr-logo.png" />
tag was functional because Webpack leverages the html-loader for processing .html files, automatically replacing the src attribute values with the bundled image URL.

To ensure proper functionality, your getLogo() method should be structured as shown below:

getLogo(): string {
    return require("../assets/timeblockr-logo.png");
}

Answer №3

Modify the following code: 

<img [src]="customerservice.getLogo()" />

Into this code: 

<img [attr.src]="customerservice.getLogo()" />

For further information, check out Attribute Binding.

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