Ideas on Code Strategies

This past week I have spent time thinking on some of the best applications I have built, and some of the "neediest" applications I have built. Some of them are in both columns. And I am sure this is the case with most developers. Some times, we get to be…

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SOAP Server and Client, now with WSDL part 2

Now here is the part where I give the example files. After we have planned the application functions, we need to figure out what we are going to return to the client. This is going to be a standard array with at least two levels: The Response array and the Data array. It will look similar to this:

Array
(
    [responseMsg] => Array
        (
            [status] => ok
            [message] => Service call was successful
        )
    [allColors] => Array
        (
            [0] => blue
            [1] => green
            [2] => black
            [3] => white
            [4] => yellow
            [5] => red
            [6] => beige
        )
)

Now that we have the basic idea, we need to create the WSDL file. Remember, it is very important to think of WSDL files as of reading from bottom to top. The final WSDl file is located here. Here is the basic idea of the WSDL file I created (going from the bottom to the top):

  1. Service: This houses the binding, the location, the port, and the name.
  2. Binding: This houses the functions that will be exposed, the operation and the input and output encoding. Most of the time these will be similar with only the names being different.
  3. Port Type: Here is where I define the operations and the input/output definitions
  4. Message: These are individual nodes for the Request and Response messages for all functions. These will usually have two message nodes per function, and they will define the structure for each action
  5. Types: This defines each structure that has been mentioned in the Message and any subsequent structures that have to be defined. This is usually the area where most struggles occur.
    • This structure will be encompassed by schema target namespace
    • Import the XML namespaces to help build the structures in the reasponse
    • For each complex type, it should either mention a specific data type (xsd:), or a new defined structure (tns:)
    • Each structure that is an array should be defined as a SOAP-ENC:Array with a wsdl:arrayType parameter

So that is the WSDL. The one I have created defines the 2 functions, the input, the output, and the structure of each. Now we can move on to the Server code.
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SOAP Server and Client, now with WSDL

Trying to get the post in for the day, and this is about the PHP SOAP service. So we have the array of items we need, and we are going to create some quick code for the server and client, but unlike nuSOAP, we do not get a great WSDL…

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PHP Web Service Example Set Up

In a previous few posts, I posted examples for the NuSOAP server. Now it is time for the intrinsic PHP SOAP web service. This will be a quick post for the server and client, as they are easy to do. The hard part will be the WSDL document. With NuSOAP,…

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You Did What?

Today's topic is kind of short, but a very important one. If you are not living under a rock, then you know about Sony's problem with their Playstation online services getting hacked and being down for some time. A new concern now is that this has exposed the credit card…

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Have Your Cake and Eat It Too

CakePHP is one of those frameworks where it is easy to set up and get an application running in a minimal amount of time. It provides different securities, helps, and functions in the framework so that your application can run smoothly and be safe. As with all applications, the level of security and functionality depends on the developer, not the code, not the language, not the database. An application is only as secure, functional and reliable as the person/team who is coding it. One of the reasons I do like Cake is that the built in security and helpers offer a developer a great way to secure data, validate it, and display it. And that can also be one of the more trickier parts of getting the application to work correctly, finding the data to do something with it.

CakePHP
CakePHP

CakePHP provides some functionality for finding the data, this is done using the “find” method. You can read more about this at the Cookbook. Using this, one can grab data from many different tables if needed, or just one table. For this exercise, I am going to use dummy data to show how to find data, using simplistic finds, and using joins, and sub-queries. So first lets examine the data tables. Not all of these are going to be connected. This is a very simplistic, quickly drawn up solution to a lending library

Sample Tables
Sample Tables

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Data Model Relationships – CakePHP’s HABTM

For today, lets dive back into some code, well data modeling at least. When you set up an application that connects to a database, you need to understand the data that will be working in the application. This is the data that will be edited, added, read and even scrutinized…

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Thinking of the site

So as I am sitting here trying to get caught up on the StephenHird site, I am thinking a little more about it. It seems like it is just a huge issue right now and am not able to complete what I really want to complete on the site. So…

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Getting into the code

So it has been a couple of weeks since I have posted. But now we need to set up some base code before we can go forward with the details and then adding in the Facebook Graph API. In the last post, the Data model was set up. We have skills and certifications as standalone tables. Skills with the levels and areas tables connected together. We also have the main glue of resumes, connected to covers and tasks which itself is connected to jobs. A lot of tables to create the resume section, but will keep some of this information all together. We need to create some code so that we can get all this information.

If you Baked each object, and used the Bake methods to create the model, and associations, as well as the controllers an views, you will have some code ready to use and ready to go. After you have Baked these items, the sample code that is created is ok to begin with. However, we want to take advantage of a very important technique, and the is the centralization of code, and prevent code duplication. There is one other thing that gets to me, and this is more of an OCD thing for me in code, and that is the way that Cake does the edit check in the controller. In the base created code, it creates a section of code that checks for an ID. If it is not passed, then it redirects the page elsewhere. Like so:

function edit($id = null) {
    if (!$id && empty($this->data)) {
        $this->Session->setFlash(__('Invalid resume', true));
        $this->redirect(array('action' => 'index'));
    }
    . . . . 
}

So in this code segment, if one gets to the edit form, and an ID is passed, and the form is not filled in, then it will display the actual form. And if the ID is not passed in, then it redirects to the Index page. For examples, if the site name was test.com:
www.test.com/resume/edit/2 – will result in the form being shown
www.test.com/resume/edit – will result in a redirect and the error message

Now here is where my OCD kicks in a little. . . .
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