Blogs
While debugging a domain and its database schema I found an interesting grails command line Gant script: schema-export. One of the great Grails command line Gant script to generate SQL scripts(DDL) which is executed against your database to model your grails domain. You can control the environment and the output file to generate the...
We use internationalization feature in grails using message tag in GSP pages. However arbitrary Groovy/Grails (e.g. tags) code can not be used in JavaScript as they are not executed on server side. To overcome this I used the following way : Declare a JSON object in js file or any where else so that this object is global one. Create a...
Configuration file plays great role in grails. You can store application specific configuration at one place. One of the grails goodies is that you can externalize configuration file i.e. store them at a location so that it is not packed with the war file. Here is the part of Config.groovy that describes how to specify external...
Ajax (shorthand for Asynchronous JavaScript and XML) is used to retrieve data from the server asynchronously without interfering with the display and behavior of the existing page. Forgetting this asynchronous behavior will produce incorrect result if it depends on the response from Ajax call. Lets take an example(I am using JQuery to...
I have been using the following code to get paginated result and the total number of results returned irrespective of the pagination params. def result=SampleDomain.createCriteria().list(){ // multiple restrictions maxResults(params.max) firstResult(params.offset) } // Return type is ArrayList Integer ...
I have been facing a problem of running configurable number of instances of the same job to consume the traffic that was varying over time. In order to dynamically create an instance of a job and run it immediately, I googled and found some interesting facts like each trigger is fired with a new instance of the job. We can create any no....
I have been working with domain and command object validation. I needed to get all the fields in error as a list so that I can display a single line error message like : please enter valid values in the following fields- filed1, field2. Another use case was to check the list of fields for error. Here is the code to get list of errorneous...
I have been facing problem of validating a text input field for a valid date. We are using two popular jquery plugins : jQuery validation and jQuery UI datepicker for client side validation. I googled it and found a good solution here http://stackoverflow.com/questions/511439/custom-date-format-with-jquery-validation-plugin but it was...
In our current project we are using jsecurity plugin and some of our bootstrap code required a user to be logged in. I found a nice blog http://www.tothenew.com/blog/?p=335 on this topic but it was using groovy metaprogramming to override the normal behaviour of SecurityUtils.getSubject() which is suitable for test environment. After...