Javascript blog file

What I did: ensure role plug to assume role access to admin only execute context function, handle result render response json via the view.

Must be a Stein. FileUpload , Plug. Upload , or a map that has the :path key. The sections are as follows: FILE CHANGES MADE Migration new table to store the file info Schema schema definition and changesets Context Module entirely new context queries to fetch reports DB transactions for reports API Controller create and delete actions that employ corresponding context module functions API View view render functions for show and delete json Controller Route if creating a new controller, you will need to create a route to serve up the action for it to render somewhere Controller Create or update an existing controller with an index action.

CreateReports do use Ecto. Report do moduledoc """ Report schema """ use Ecto. Schema import Ecto. Reports do moduledoc """ Context for creating a report """ import Ecto. Query alias MyApp.

Repo alias MyApp. Report alias MyApp. As mentioned in the chapter Blob , FileReader can read not just files, but any blobs. They do not affect the page. In addition to Blob methods and properties, File objects also have name and lastModified properties, plus the internal ability to read from filesystem. Just as we did with blobs, we can create a short url with URL. This way the file can be downloaded or shown up as an image, as a part of canvas etc.

We want to make this open-source project available for people all around the world. For example, image, pdf or text file contents can be easily displayed on any HTML div or bootstrap pop-up modal. The following screenshot shows the image file being opened on the bootstrap modal. Screenshot 2 I have written the following code to display on a pop-up modal using the sweetalert2 library.

You can use normal html div or bootstrap modal. But if file contents cannot be displayed on any HTML div or bootstrap modal, then files that are downloadable but cannot be viewable look like as shown in the following screenshot with the above Html code: Screenshot 3 As you can see in screenshot 3 the pop-up modal or any HTML div is blank and the file is downloading because it can be downloaded only by browser behaviour and cannot be viewable on any web page HTML div.

Blob objects are immutable. Blob to data url. Previous lesson Next lesson. Comments read this before commenting… If you have suggestions what to improve - please submit a GitHub issue or a pull request instead of commenting. If you can't understand something in the article — please elaborate. Chapter Binary data, files. Edit on GitHub.