CRUD Module Development

8/12/2019 CRUD Module Development

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Drupal Module

Development


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Creating Forms in Drupal

The primary method of submitting contentover the Web is through HTML forms.

While the ubiquity of forms makes life easy

for the web user, the dearth of good forms

processing tools usually makes form

development a joyless chore for

programmers. However, forms processing

is one area in which Drupal excels


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Creating Forms in Drupal

The Forms API (FAPI) provides aprogramming interface that takes the pain

out of form development (or at least

significantly reduces the pain). Using the

FAPI, developers can provide a single

form definition and let Drupal build and

display the form, collect the results, and

even validate and escape form data.


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Handling Forms with the Forms API (FAPI)

Perhaps the most common but timeconsuming aspect of web development is

form handling. Typically, a form must be

defined and prepared for display. Then,

when form data is submitted to the server,

various form processing tasks must be

conducted to validate, manipulate, and

store form data. Drupal has a special APIfor handling data.


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Handling Forms with the Forms API(FAPI)

Forms API (FAPI). FAPI automaticallyhandles the mundane details of form

handling, making it much easier for

developers to quickly write forms.

Using the Forms API, developers can

create a single form definition that is then

used by Drupal to perform various aspects

of form handling. The same data structure

that is used to generate the form is also

used to validate the form.


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And with a few simple functions, complexforms can be handled effectively. FAPI

stands out as one of the gems in Drupal's

crown because of these features.

While we will return to some aspects of the

API later in the book, if you are looking for

an in-depth discussion beyond what this

chapter has to offer, the Drupal website

has some very good articles.


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:The "quickstart" guide to the Forms API:

http://api.drupal.org/api/ file/developer/topics/forms_api.html/6

The Forms API Quick Reference:

http://api.drupal.org/api/file/ developer/topics/forms_api_reference.html/6

Form API changes between Drupal 5 and Drupal 6:http://drupal.org/ node/144132

The Form Generation API overview:http://api.drupal.org/api/group/ form_api/6


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Sample Code


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Sample Code

In its simplest form, the drupal_get_form() function takes a callback function

and uses the results of that function to create a form structure and thenmanage handling of the resulting form. In the above example, it will return an

HTMrmatted form. While the drupal_get_form() function only makes use of one

argumentthe name of the callback functionit can take more arguments. Any

additional arguments will simply be passed on to the functions that it calls


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Activity 1- Create Entry Form


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Cont.

Objective is to:Add fields for School Year,Semester,Major,

Year Level and College

Add student record in the database.


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Activity 2-Create Search Form

Objective is to : Create a form that allows user to filter

students per school year and sem

Add additional filter by:

Gender

Student Major

Year Level


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Activity 3-Edit Form

Objective is to:

Create Edit Form for student record.

Allows user to change the student

information.


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