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ECKS Forms

Vision Statement

Ecks Forms will manage db-assisted forms through a series of web-based forms, and provide a reliable means for getting/validating input of managed forms.

Requirements

• provide a library of validation procs (maybe add to ad_page_contract if possible without affecting existing ad_page_contract functionality)
• validation procs should use naming from pg casting types and other reserved-words (from tcllib?) or to check with existing column values (as in fk_us_states for example) for application side fk_ checking
• Use ad_page_contract (or a variant) for form validation, see ad_page_contract_filter_procs and creating a proc for each value-type, which allows for consistent validation messages between forms. Do not use ad_form, to keep learning curve low and keep it simple method  (see guidelines)
• use template::form to generate form code
• use dynamic parts of OpenACS templating in appropriate contexts
  

Implementation Notes

use tcl lists and arrays to process form fields, and pass them through ad_page_contract as arrays, for example batch_field_values(index);

batch_field_index, batch_field_labels(index) and batch_field_value_type(index) would be referenced via the form_abbrev which would be parameterized ref in the pages (to allow variations from the default).   indexes will have to be verified through registered forms much how ad_page_contract requires explicit definition of incoming variables.

ecommerce doesn't use ad_form, and so may have some useful examples of how to handle arrays, underscores, periods, dashes etc with index values.

variable and proc prefixes: daf_

public procs envisioned: daf_build_form $form_abbrev, daf_validate_input $form_abbrev daf_explain_problems

provide auxiliary procs for getting (text, image and other) data from other websites.  For images, see OpenACS thread How to import image from url? (Done: see ecds_get_url and ecds_get_image_from_url in ecommerce package.)

Look at the acs-lang code/data model for hints on how to tighten responsiveness.

Feature requests

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Categories: OpenACS (ec-g2)

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