Read contents of file into array inside vue component

Question

Inside my media.txt file, I have:

"https://www.dropbox.com/s/******/687.jpg?dl=0",
"https://www.dropbox.com/s/******/0688.jpg?dl=0

I have the following Vue carousel component:

<template>
  <section>
    <v-card
        class="mx-auto"
        color="#26c6da"
        dark
        max-width="1200"
      >

      <v-carousel>
        <v-carousel-item v-for="(item,i) in items" :key="i" :src="item.src"></v-carousel-item>
      </v-carousel>

    </v-card>
  </section>
</template>

<script>
var cache = {};
// const images = require.context('../static/', false, /\.png$|\.jpg/);
// const images = require.context('../static/', false, /\.png$|\.jpg|\.mp4/); // WORKING
const images = require.context('../static/media.txt', false, /\.png$|\.jpg|\.mp4/);
var imagesArray = Array.from(images.keys());
// const images = ["./52lv.PNG", "./Capture1.PNG", "./maps.PNG"]
console.log(images.keys());
console.log('images');
console.log(images);
var constructed = [];
function constructItems(fileNames, constructed) {
  fileNames.forEach(fileName => {
    constructed.push({
      'src': fileName.substr(1)
    })
  });
  return constructed;
}
console.log('items ');
console.log(imagesArray);
// At build-time cache will be populated with all required modules. 
var res = constructItems(imagesArray, constructed);
console.log(res);
export default {
  data: function() {
    return {
      items: res
    };
  }
};
</script>

I want to read the images from the media.txt file into an array, then populate the carousel src with these. I've been trying with Webpack's require.context function, but I'm getting a module not found error.

How can I get this working?

tony19 · Accepted Answer · 2019-05-07 07:22:32Z

It looks like you're trying to import a string array (JSON) into a variable. That string array should be delimited by square brackets like this:

[
  "foo",
  "bar"
]

require.context(dirPath, useSubDirs, filenameRegex) is not the appropriate API to use here, as that method imports multiple files from a specified directory. For instance, the code below tells Webpack to load *.png, *.jpg, and *.mp4 files from the directory named ../static/media.txt (which presumably is actually a file).

require.context('../static/media.txt', false, /\.png$|\.jpg|\.mp4/) // DON'T DO THIS

Instead, you could simply use require('path/to/file.json') to import the specified file as a JSON object/array. For example, to import src/assets/media.json (containing the array mentioned at the top), the syntax would be:

// e.g., in src/components/Foo.vue
const media = require('../assets/media.json')
console.log(media) // => [ "foo", "bar" ]

demo

estevanj · Accepted Answer · 2019-05-06 22:58:15Z

3

You probably should install https://github.com/webpack-contrib/raw-loader#getting-started (a loader for webpack read txt files), configure it in your vue.config.js and you should be able to import like this: import txt from 'raw-loader!./file.txt'; instead using require.

answered May 6, 2019 at 22:58

estevanj

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