I use the imageTools plugin in grails to resize my images, and define two new properties in my conf/oovy to set the thumbnail size and download directory. In my update and save methods of the controller, I call this When I generated the views, the byte image will ensure that the image button gets generated into a file browser. A Grails project is a complex web of files, but Grails, like other Web frameworks, provides command-line tools to generate the. The solution I came up with involved using the Transient property within my Recipe class, so my domain class looks something like this: The image needed to be scaled to one size, and saved to a specific directory. The application I am building is basically a series of recipes with a picture that went with each. I didn’t like the manual adding of the form objects in the CRUD generated GSPs since I would often overwrite the generated ones by accident. I took a look at the file upload abilities in Grails and liked it, but wasn’t too convinced this would be the most elegant way to go. For one of my projects, I needed to allow users to upload an image that I would then save to disk and display. interior processing tool here if that makes any sense to ya. By default, it will run the Grails app using the prod run-app (or prod run-war for Grails 2) directive which is the most optimized way of running Grails for production environments. CURRENTLY UNSUPPORTED, since I haven't used it myself in years. Asset Pipeline Grails 85 usages asset-pipeline-grails Apache The Grails Asset-Pipeling plugin providing asset transpiling to grails. Docker image that will bootstrap an environment for running a Grails application using Docker optimized base images. One of the ways in which transient properties can be used is to generate the file upload components within the GSP needed to do file uploading. I knew this album existed but dont recall if I checked it out. GitHub - ricardojmendez/grails-imagetools: Basic image tools plugin for Grails based on JAI. In this post, I will discuss how I used the transient property to enable image uploading in Grails. I really like the automagic generation of view elements in Grails GSP files, and have used transient properties to generate views that allow for uploading files. Note : The above code can be dangerous as a hacker can modify the className and feildName in the query string and get the hidden information.Something that I have come across in my experimentation with Grails is the need to have UI elements in the screen that map to more complex elements in the domain model or things that are not stored in the database. Now where ever we want to display the image, we can just include the following tag: Now to render the image/file, lets have a separate controller in a controller directory, where we would define the action to generate the image:Ĭlass ImageController " ![]() Now the person object holds the image and lets save it So as MultipartFile object returs the byte which is to be stored in a picture property of a person class, in the save action of the PersonController Lets see how we do it : MultipartFile provides various useful methods which can be used getBytes(), getSize(), getContentType(), getName() etc. If you are using Grails 3, both Ultimate and Community editions work fine since Grails 3 uses Gradle as a build tool. ![]() Once we have a field with a byte defined in the class then automatically its view is generated with a input tag of file type in html, which returns the MultipartFile object in the controller. Grails 3.x is the latest and much improved (Gradle and Spock are defaults, among many other things) For an IDE, I suggest switching to IntelliJ IDEA. Picture(size:0.5000000) // to store files upto 5MB approx I am using version 1.0. ![]() So Lets consider I have a domain class with the name Person A quick google search for 'imagemagick for grails' should get you started on your way. This is completely anonymous and helps us to understand better how the tooling is used and how to improve it in the future. In this case I need to resize this image to 600 840). I need a functionality to resize the images if the uploaded images size is too big (for eg: more than 600 840 ). It comes with Spring UAA (User Agent Analysis), an optional component that help us to collect some usage data. I am developing a Web Album using Grails and for image processing, I am using grails-image-tools plugin. I am taking an example to upload and render the image in this blog, though the code would be same for any other file. The Grails IDE brings you first class developer tooling for Grails into Eclipse. ![]() Lets discuss how can we upload a file and store it in a database, along with that how do we render it on the gsp page.
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