Teachers Development Group

You have your application completed and business is booming. However, your boss just walked in and said to you that the application now needs to support Spanish and other languages soon. This requirement could be daunting just by itself but Aurelia has an excellent plug-in that will make supporting multiple languages fairly easy. In this chapter we are going to take a look at aurelia-i18n and how to install and configure it for use in your application. We will look at the conventions required to get your translations hosted on the server and then test your application in both English and Spanish. Let’s get started.

One common scenario that you will find while building your applications is prompting users for information. You will build views that will represent data entry, but there will be times when you will want to display a dialog. The aurelia-dialog plug-in is perfect for this scenario. In this chapter, we will cover installing and using the aurelia-dialog. We will walk you through using the plug-in and discuss the various workflows you might want to support in your applications. Let's start by installing the plug-in.

We have already covered how to create custom elements, but there might be scenarios where you would like your view to be dynamic based on some given criteria. You might find yourself in scenarios where you would like to render specific views based on user interaction. Let’s go with the example that we have a customer view and we want to toggle between a read-only view and an edit view of the customer information. Let’s look at how we would do this. Upon completing this chapter, you will have a good understanding of how compose works in Aurelia and when and where you would want to consider using it.

In this chapter we are going to cover how value converters work in Aurelia. We will review the API and conventions that Aurelia uses when working with value converters. We will also create our own value converter. Upon completing this chapter, you will have a good understanding of how value converters work in Aurelia.

Synthetic sex pheromone of the pea mothCydia nigricana. (E,E)-8,10-dodecadien-1-yl acetate (E8,E10-12 : Ac), was applied in a 3-ha pea field at a rate of 17 g/ha, in two different dispenser formulations. Aerial concentrations within pea canopy, as determined by a field electroantennogram (EAG) apparatus, were 2 and 3 ng/m(3) in the two dispenser treatments. The validity of the EAG measurements was corroborated by sampling of field air, followed by gas chromatographic quantification ofE8,E10-12 : Ac. Males were attracted to fresh dispensers releasingE8,E10-12 : Ac plus less than 2% of the antagonisticE, Z; Z, E; andZ, Z isomers. Two days after placement, the proportion of these isomers had increased to 6%. Males were then no longer attracted to the dispensers, but were observed to fly out of the treated field. Male attraction to calling females was almost entirely suppressed, and attraction to traps baited with synthetic pheromone was significantly reduced. Larval infestation in the pheromone-treated field was 2%, compared to 36% in a control field.