By Martin DSouza
Professional Oracle program exhibit Plugins is your “go to” publication at the groundbreaking plugin structure brought in Oracle software exhibit 4.0. utilizing the recent APEX performance, you could create well-packaged, documented, reusable parts and reliably leverage your coding investments throughout many functions. elements you create can outline new merchandise and zone kinds, specify validation strategies, and current dynamic activities to purchaser purposes. you could layout cutting edge and colourful how one can reveal details, equivalent to showing the temperature utilizing a picture of a thermometer, or exhibiting revenues speed within the type of an car speedometer. the recent plugin structure is bound to create a tidal wave of creativity.
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Extra resources for Expert Oracle Application Express Plugins: Building Reusable Components
Info CHAPTER 3 ■ ITEM PLUG-INS Instead of using a variable name like v_attr_01 for application- and component-level attributes, use meaningful variable names. This serves various purposes. It makes things easier for other developers to modify the plug-in. There is also a chance that the attributes may change throughout the lifespan of the plug-in. The other variables are there to manage the date formats. The from/to date picker allows for each item to contain different date formats. Note that it is highly unlikely that each item would contain different formats, but it is a possibility since the items are independent of each other.
For now store the render function in the package that you previously created, PKG_APRESS_PLUGINS. First create the entry in the package specification: 1. pks in your SQL editor. 2. Edit the plug-in and scroll to the Callbacks region. Click the Render Function Name label to bring the pop-up help, as shown in Figure 3-21. Figure 3-21. info CHAPTER 3 ■ ITEM PLUG-INS 3. pks, as shown in Figure 3-22. Figure 3-22. Item type interface 4. Name/rename the function to f_render_from_to_datepicker, and include a semicolon at the end of the return line so that the package specification can compile.