By Jennifer Hodgdon
If you’re an internet programmer new to Drupal, this e-book indicates you which of them programming innovations you could use—and that you may still avoid—when construction customized internet functions with this content material administration framework. Drupal has its personal set of programming rules that require a unique method, and plenty of programmers make errors whilst counting on abilities they’ve used for different initiatives. the ideas during this ebook assist you during the transition by way of demonstrating which programming practices agree to the “Drupal way,” and which don’t.
If you’re acquainted with Hypertext Preprocessor, you’ll speedy how one can benefit from the strong Drupal API.
* Get an entire evaluation of Drupal, together with Drupal middle and add-on modules and subject matters
* examine Drupal’s easy programming ideas, equivalent to the power to customise habit and output with hooks
* notice universal Drupal programming mistakes—and why hacking is one in every of them
* discover particular parts the place you could placed your programming talents to paintings
* examine programming advice and instruments that will help you excellent and debug your functions
Instructs those that have already programmed in high-level languages in programming with the extra robust and flexible meeting or laptop language.
• As XML earnings recognition, builders want to enforce XML applied sciences of their line-of-business applications
• This ebook bargains readers real-world perception into XML so that it will construct the absolute best applications
• bargains an in-depth examine XML and discusses XML instruments, companies (RSS, cleaning soap, relaxation, WSDL), programming (DOM, SAX, Ajax), and languages (. internet, Java, personal home page)
The two-volume set LNCS 4051 and LNCS 4052 constitutes the refereed court cases of the thirty third overseas Colloquium on Automata, Languages and Programming, ICALP 2006, held in Venice, Italy, in July 2006. this can be quantity I (LNCS 4051), providing sixty one revised complete papers including 1 invited lecture that have been rigorously reviewed and chosen from 230 submissions.
Many engineering, operations, and medical functions contain a mix of discrete and non-stop determination variables and nonlinear relationships related to the choice variables that experience a suggested influence at the set of possible and optimum recommendations. Mixed-integer nonlinear programming (MINLP) difficulties mix the numerical problems of dealing with nonlinear features with the problem of optimizing within the context of nonconvex features and discrete variables.
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Additional resources for A Programmer's Guide to Drupal
Responding to events The contributed Rules module allows you to define responses (such as sending email or redirecting to a different page) to various events (such as updating or adding content) on your website, under certain conditions (such as matching a content type or user role). If the events, conditions, or responses defined by the Rules module do not cover your needs, you can extend it. The Notifications module can also be useful—it lets users subscribe to content updates on a site. Site navigation Novice Drupal programmers sometimes want to hardcode site navigation into their theme templates, because they have used this approach to ensure uniform naviga‐ tion on custom-built PHP/MySQL or pure HTML sites in the past.
Of course, following the principles in Chapter 2 will also help you shift your thinking to the Drupal way of doing things, and the suggestions and tools in Chapter 5 can help you avoid mistakes and find the mistakes that you do make. Mistake: Programming Too Much Experienced programmers who are new to Drupal often suffer from a variety of the “if all you have is a hammer, everything looks like a nail” syndrome: when faced with a challenge on a website (such as adding a feature or fixing a problem), they always try to solve it with programming.
See “Generating Forms with the Form API” (page 59) for more on the Form API. Mistake: Saving PHP Code in the Database It is possible, by enabling certain modules and granting certain permissions, for users to include PHP code within the body of page or block content (and in other places), which is executed when the page or block is displayed. While this might seem like a great convenience and a time-saver, it is usually a mistake to allow this because of the following factors: Mistake: Saving PHP Code in the Database | 43 Security risk PHP code can add, change, or delete files and database records (any PHP code run during a page request has full rights to change the database).