If you have complex cost calculations, you might find it easier to define each one in a separate function that is then referenced in a <name>CostLineItem variable in the
estimateCost(order)
function. You might consider using a separate function if your cost calculation involves a
For Loop
.
For Loops are handy if you modify the number of Binding options available, or add/remove custom fields on a regular basis. Using a For Loop means you do not need to know the exact position of a sub-attribute within the configuration. You can simply traverse the Binding options available (for example) and match on it. If you don’t use a For Loop, you will need to update your cost script every time you change a sub-attribute in the product configuration file.
The structure of this function is as follows:
- Define the function and pass in the order object
- Declare the variables
- Define the variables
- Define the cost calculation value
- Return the a value to the calling function
Example
This example shows a function that checks the value assigned to each selected sub-attribute option (for example, the selected color), for each sub-attribute (for example, Color and Coil thickness) under the Coil Binding option.
Define the function and pass in the order object
function calculateBindingCost(order) {
Declare the variables
var items = [];
var total = 0;
var numberOfSubAttributes = 0;
var coilBindingCost = 0;
var coilThicknessCost = 0;
var coilBindingColorCost = 0;
Define the variables
// Check if an option with sub-attributes was selected
// (e.g. Coil Binding)
if (order.binding.attributes) {
// Obtain the number of sub-attributes so we can loop through
// to check the value of each selected option (for coil binding,
// we would loop through: coil thickness + color)
numberOfSubAttributes = order.binding.attributes.length;
// If the sub-attribute has one or more option,
// check each option value sequentially
if (numberOfSubAttributes > 0) {
// Loop through
for (var i = 0; i < numberOfSubAttributes; i++) {
// Grab the cost of the selected coil thickness option
// (e.g. cost of thick coil, medium coil, or thin coil)
if (order.binding.attributes[i].name == "Coil thickness") {
coilThicknessCost = order.binding.attributes
[i].option.cost;
}
// Grab the cost of the selected color option
// (e.g. cost of blue, red, navy)
if (order.binding.attributes[i].name == "Color") {
coilBindingColorCost = order.binding.attributes
[i].option.cost;
}
}
}
}
Define the cost calculation value
coilBindingCost = coilThicknessCost + coilBindingColorCost;
Return a value to the calling function
return coilBindingCost; }
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