Drupal 7 Module Development

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Chapter 7 } '@height' => $item['height'], '@width' => $item['width'], '@unit' => dimfield_units($item['units']), )); } elseif ($field['settings']['num_dimensions'] == 3) { $output = t( '@height @unit by @width @unit by @depth @unit', array( '@height' => $item['height'], '@width' => $item['width'], '@depth' => $item['depth'], '@unit' => dimfield_units($item['units']), )); } $element[$delta] = array('#markup' => $output); } break; } return $element; The formatter_view callback is expected to return a renderable array that the theme system can understand. In this case, we simply want a formatted string that describes the data stored in the field. As before, we get multiple field values passed to the callback at once in an array. So we simply iterate over them one by one and assign them to the $element variable. The #markup element type tells <strong>Drupal</strong> "Here's some HTML. I've already formatted it, just use it". When that element gets rendered later, in the page, the strings we generated using the t() function will simply get displayed with all of the appropriate data in them. Complex formatters There is, of course, nothing preventing us from rendering all of the values together if we want. In fact, our second formatter will do just that. Rather than a series of values one after another, we'll render all of the available values in a single table. Then the question arises, how do we display units? As their own column? Inline on each cell? Just in the header of each dimension column? In cases like this, the best option is to let the user decide using the configuration capabilities of formatters. [ 201 ]
Creating New Fields Recall from a moment ago that the dimfield_table formatter declared a settings key, which was an array. That array defines all of the possible settings parameters for that formatter and their default values. In order to make use of formatter settings there are also two other hooks we need to implement: hook_field_formatter_ settings_summary() and hook_field_formatter_settings_form(). function dimfield_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) { $display = $instance['display'][$view_mode]; $settings = $display['settings']; $form = array(); if ($display['type'] == 'dimfield_table') { $form['units_as'] = array( '#title' => t('Show units'), '#type' => 'select', '#options' => array( 'column' => t('As their own column'), 'cell' => t('In each cell'), 'none' => t('Do not show units'), ), '#default_value' => $settings['units_as'], '#required' => TRUE, ); } return $form; } function dimfield_field_formatter_settings_summary($field, $instance, $view_mode) { $display = $instance['display'][$view_mode]; $settings = $display['settings']; $summary = ''; if ($display['type'] == 'dimfield_table') { if ($settings['units_as'] == 'column') { $summary = t('Show units as their own column'); } else if ($settings['units_as'] == 'cell') { $summary = t('Show units in each cell'); } [ 202 ]
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www.allitebooks.com
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Drupal 7 Module Development Copyrig
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Foreword Drupal has its roots in th
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About the Authors Matt Butcher is a
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Larry Garfield is a Senior Architec
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John Albin Wilkins has been a web d
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Jojodae Ganesh Sivaji has been invo
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Why Subscribe? • Fully searchable
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Table of Contents Tools for develop
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Table of Contents A shortcut for sy
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Table of Contents Using hook_node_a
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Table of Contents Creating a task 3
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Preface Chapter 5, Building an Admi
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Preface The system for handling thi
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Developing for Drupal 7 Drupal is a
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However, what we do want to start w
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The Operating System Chapter 1 Wind
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Chapter 1 Drupal core is the founda
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Chapter 1 The database We have take
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Chapter 1 The responsibility of the
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Chapter 1 While one could imagine t
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Chapter 1 We assume that you have y
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Chapter 1 The following are a few o
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Creating Your First Module We are g
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Creating Your First Module As obvio
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Creating Your First Module By Drupa
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Creating Your First Module The next
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Creating Your First Module When Dru
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Creating Your First Module Doxygen-
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Creating Your First Module The help
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Creating Your First Module Drupal s
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Creating Your First Module Finally,
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Creating Your First Module Here's o
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Creating Your First Module ); } } r
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Creating Your First Module Not in J
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Creating Your First Module There ar
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Creating Your First Module The exam
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Creating Your First Module Setting
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Creating Your First Module } ); pub
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Creating Your First Module You migh
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Creating Your First Module The repo
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Drupal’s Theme Layer This book is
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Drupal’s Theme Layer There are ac
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Drupal’s Theme Layer Theme engine
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Drupal’s Theme Layer Preprocess f
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Drupal’s Theme Layer A Drupal the
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Drupal’s Theme Layer The theme()
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Drupal’s Theme Layer Now, if you
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Drupal’s Theme Layer A similar pr
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Drupal’s Theme Layer Now, that wa
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Drupal’s Theme Layer • #suffix:
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Drupal’s Theme Layer Two powerful
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Drupal’s Theme Layer 'menu_tree__
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Drupal’s Theme Layer If a functio
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Drupal’s Theme Layer We've also s
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Drupal’s Theme Layer Summary You'
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Theming a Module After all, if you
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Theming a Module * Enables a single
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Theming a Module * First draft! * *
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Theming a Module Theming a Drupal b
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Theming a Module Converting a theme
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Theming a Module if (is_array($elem
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Theming a Module Notice that the .b
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Theming a Module } $block['content'
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Theming a Module } 'variables' => a
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Theming a Module } // Theme the use
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Theming a Module // Create links fo
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Theming a Module } // Load the acco
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Theming a Module * - $user: The use
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Theming a Module Summary In this ch
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Building an Admin Interface Startin
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Building an Admin Interface $items[
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Building an Admin Interface 'access
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Building an Admin Interface Each ar
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Building an Admin Interface Other p
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Building an Admin Interface Each el
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Building an Admin Interface Drupal
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Building an Admin Interface This is
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Building an Admin Interface Form su
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Building an Admin Interface A short
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Building an Admin Interface } retur
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Building an Admin Interface PHP mai
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Building an Admin Interface Impleme
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Building an Admin Interface Debuggi
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Building an Admin Interface This te
Page 174 and 175: Working with Content Drupal 7 intro
Page 176 and 177: Chapter 6 The Schema API allows dat
Page 178 and 179: 'fields' => array( 'aid' => array(
Page 180 and 181: Chapter 6 'fieldable' => TRUE, 'ent
Page 182 and 183: Chapter 6 The return value from the
Page 184 and 185: Chapter 6 In our case, we defined t
Page 186 and 187: Chapter 6 Most entity operations in
Page 188 and 189: [ 165 ] Chapter 6 This callback sim
Page 190 and 191: Chapter 6 This page will simply gen
Page 192 and 193: Chapter 6 This hook defines a new f
Page 194 and 195: Submit callback The submit callback
Page 196 and 197: Chapter 6 // Save the initial revis
Page 198 and 199: Chapter 6 Master/slave database con
Page 200 and 201: Chapter 6 array($artwork->aid => $a
Page 202 and 203: Chapter 6 'access arguments' => arr
Page 204 and 205: Chapter 6 } foreach ($artworks as $
Page 206 and 207: Creating New Fields In the last cha
Page 208 and 209: Chapter 7 Although an advanced topi
Page 210 and 211: Chapter 7 The most important magic
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Page 214 and 215: Chapter 7 Exposing fields to the Fo
Page 216 and 217: Chapter 7 $element['width'] = array
Page 218 and 219: Chapter 7 if ($widget['type'] == 'd
Page 220 and 221: Chapter 7 } return; 'field_ui_field
Page 222 and 223: Chapter 7 } function theme_dimfield
Page 226 and 227: Chapter 7 } else if ($settings['uni
Page 228 and 229: Chapter 7 We can, of course, have m
Page 230 and 231: Chapter 7 To demonstrate how entity
Page 232 and 233: [ 209 ] Chapter 7 Now look at that
Page 234 and 235: Drupal Permissions and Security Per
Page 236 and 237: Chapter 8 The preceding code checks
Page 238 and 239: Chapter 8 If we had accidentally ru
Page 240 and 241: Chapter 8 The user_access() functio
Page 242 and 243: In the first case, Are we looking a
Page 244 and 245: Chapter 8 Declaring your own access
Page 246 and 247: } Chapter 8 'page callback' => 'exa
Page 248 and 249: Chapter 8 if (!flood_is_allowed('co
Page 250 and 251: [ 227 ] Chapter 8 Enabling permissi
Page 252 and 253: Chapter 8 } $permissions = array( '
Page 254 and 255: Chapter 8 This approach is the prop
Page 256 and 257: Chapter 8 Running access checks on
Page 258 and 259: Chapter 8 Handling AJAX callbacks s
Page 260 and 261: Chapter 8 As a result, we cannot tr
Page 262 and 263: Chapter 8 This allows us to pass a
Page 264 and 265: Node Access Out-of-the-box, Drupal
Page 266 and 267: Chapter 9 The Node Access API allow
Page 268 and 269: * - "delete" * - "create" * @param
Page 270 and 271: Chapter 9 if (!user_access('access
Page 272 and 273: Chapter 9 } if (module_implements('
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Chapter 9 hook_node_access() is the
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Chapter 9 Note that the {node_acces
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Chapter 9 The basic permission 'cre
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Chapter 9 It is a good idea to writ
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Chapter 9 On node listing pages, th
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Chapter 9 Writing a complete node a
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• Can this user bypass node acces
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Chapter 9 For our test module, we w
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Chapter 9 When hook_node_access_rec
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Chapter 9 A few things to consider
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Chapter 9 Security considerations T
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Chapter 9 Rebuilding the {node_acce
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Chapter 9 Using the new hook_node_a
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Chapter 9 We may alter any element
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Chapter 9 } // Check anonymous user
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Chapter 9 // Check the permission.
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Chapter 9 The key to Devel Node Acc
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Chapter 9 In the preceding case, th
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JavaScript in Drupal JavaScript is
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Chapter 10 Adding JavaScript and CS
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Chapter 10 When a JavaScript librar
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The following code adds a system CS
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Chapter 10 The second argument can
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Chapter 10 From here onwards, when
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Chapter 10 If a renderable array is
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Chapter 10 Drupal specific JavaScri
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Chapter 10 There are three ways var
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Chapter 10 AJAX helpers Included in
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The callback function hello_world_s
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Chapter 10 Once the response is set
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ajax_command_prepend To add content
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Working with Files and Images Drupa
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Chapter 11 It is very important tha
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Chapter 11 In order to open files f
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Chapter 11 Stream wrappers If you'v
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Chapter 11 In some cases you may no
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Chapter 11 A read-only stream wrapp
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Chapter 11 } 'type' => STREAM_WRAPP
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Chapter 11 For full details of thes
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Chapter 11 After this setup, we sta
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Chapter 11 This is all very cool, b
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Chapter 11 This is where you can st
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Chapter 11 • form callback: If yo
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Chapter 11 Finally we can make the
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Chapter 11 Pretty cool right? Howev
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Chapter 11 As you can see, there is
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Installation Profiles This chapter
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Chapter 12 Profile modules and them
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Enabling modules Just like modules
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Chapter 12 • display_name: A huma
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Next, let's create a form to enter
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Chapter 12 Notice that $install_sta
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Chapter 12 Here, the task that sets
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Chapter 12 Each row being added to
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Chapter 12 // URL filter. 'filter_u
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Chapter 12 'locale' => 'en', ), //
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Database Access Although Drupal 7 h
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Appendix A Result objects The retur
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Appendix A The join() methods all r
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[ 369 ] Appendix A The db_insert()
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Appendix A A Merge query says, in e
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Appendix A Slave servers Drupal als
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Security Throughout this book, we h
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Filtering The following guidelines
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First, whenever we write a query ag
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Appendix B There are both RSS feeds
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ajax_command_alert command 309 ajax
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Drupal, subsytems blocks 20 code te
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form handling 229 forms access chec
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K key() method 371 L label property
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evision handling 175 revisions hand
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U unit test 49 update queries 370 u
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Drupal 7 ISBN: 978-1-84951-286-2 Pa
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