The first line is the feature declaration: in the previous example (Grouping) we created the feature using the Ext.create declaration.
But if we do not want to explicitly create the feature every time we declare, we can use the ftype property, which is groupingsummary in this example.
The preceding code will output the following grid: The rowbody feature adds a new tr-In the preceding code, we are not only displaying the name of the book; we are using the rowbody to display the topic of the book as well. One very important thing to be noted is that rowbody will be initially hidden, unless you override the get Additional Data method.
Before we examine the grid's new features and enhancements, let's take a look how to implement a simple grid in Ext JS 4: As you can see in the preceding code, the two main parts of the grid are the store and the columns declarations.Note, as well, names of both store and model fields always have to match with the column's data Index (if you want to display the column in the grid). The way we used to declare a simple grid in Ext JS 3 is the same way we do for Ext JS 4. kontaktanzeigen singles Bremen However, there are some changes related to plugins and the new features property.Each token must be unique and must increment in the format , , and so on.The preceding code will output the following grid: The Grouping Summary feature adds a row at the bottom of each grouping.
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Sencha calls this new feature Intelligent Rendering.Ext JS 3 used to create the whole structure, supporting all the features.(For more resources on Java Script, see here.) The grid panel is one of the most-used components when developing an application Ext JS 4 provides some great improvements related to this component.The Ext JS 4 Grid panel renders a different HTML than Ext JS 3 Grid did.But, what if someone just wanted to display a simple grid?
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All the other features not being rendered would just be wasted, because no one was using that structure.
Declaring the summary Type as count means we want to display the number of books in that particular topic/category; it is going to count how many records we have for a particular category in the grid.
It is very similar to the count of the PL/SQL language.
The only difference from the Grouping Summary feature is the feature declaration itself.
The summay Type and summary Renderer properties work in a similar way.