1 | <?php |
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2 | |||
3 | namespace SilverStripe\Comments\Extensions; |
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4 | |||
5 | use SilverStripe\CMS\Model\SiteTree; |
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6 | use SilverStripe\Comments\Admin\CommentsGridField; |
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7 | use SilverStripe\Comments\Admin\CommentsGridFieldConfig; |
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8 | use SilverStripe\Comments\Controllers\CommentingController; |
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9 | use SilverStripe\Comments\Model\Comment; |
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10 | use SilverStripe\Control\Controller; |
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11 | use SilverStripe\Control\Director; |
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12 | use SilverStripe\Core\Config\Config; |
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13 | use SilverStripe\Forms\CheckboxField; |
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14 | use SilverStripe\Forms\DropdownField; |
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15 | use SilverStripe\Forms\FieldGroup; |
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16 | use SilverStripe\Forms\FieldList; |
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17 | use SilverStripe\Forms\Tab; |
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18 | use SilverStripe\Forms\TabSet; |
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19 | use SilverStripe\ORM\DataExtension; |
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20 | use SilverStripe\ORM\DataList; |
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21 | use SilverStripe\ORM\PaginatedList; |
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22 | use SilverStripe\Security\Member; |
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23 | use SilverStripe\Security\Permission; |
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24 | use SilverStripe\Security\Security; |
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25 | use SilverStripe\View\Requirements; |
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26 | |||
27 | /** |
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28 | * Extension to {@link DataObject} to enable tracking comments. |
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29 | * |
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30 | * @package comments |
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31 | */ |
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32 | class CommentsExtension extends DataExtension |
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33 | { |
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34 | /** |
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35 | * Default configuration values |
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36 | * |
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37 | * enabled: Allows commenting to be disabled even if the extension is present |
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38 | * enabled_cms: Allows commenting to be enabled or disabled via the CMS |
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39 | * require_login: Boolean, whether a user needs to login (required for required_permission) |
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40 | * require_login_cms: Allows require_login to be set via the CMS |
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41 | * required_permission: Permission (or array of permissions) required to comment |
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42 | * include_js: Enhance operation by ajax behaviour on moderation links (required for use_preview) |
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43 | * use_gravatar: Set to true to show gravatar icons |
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44 | * gravatar_default: Theme for 'not found' gravatar {@see http://gravatar.com/site/implement/images} |
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45 | * gravatar_rating: Gravatar rating (same as the standard default) |
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46 | * show_comments_when_disabled: Show older comments when commenting has been disabled. |
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47 | * order_comments_by: Default sort order. |
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48 | * order_replies_by: Sort order for replies. |
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49 | * comments_holder_id: ID for the comments holder |
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50 | * comment_permalink_prefix: ID prefix for each comment |
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51 | * require_moderation: Require moderation for all comments |
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52 | * require_moderation_cms: Ignore other comment moderation config settings and set via CMS |
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53 | * frontend_moderation: Display unmoderated comments in the frontend, if the user can moderate them. |
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54 | * frontend_spam: Display spam comments in the frontend, if the user can moderate them. |
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55 | * html_allowed: Allow for sanitized HTML in comments |
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56 | * use_preview: Preview formatted comment (when allowing HTML) |
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57 | * nested_comments: Enable nested comments |
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58 | * nested_depth: Max depth of nested comments in levels (where root is 1 depth) 0 means no limit. |
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59 | * |
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60 | * @var array |
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61 | * |
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62 | * @config |
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63 | */ |
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64 | private static $comments = [ |
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65 | 'enabled' => true, |
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66 | 'enabled_cms' => false, |
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67 | 'require_login' => false, |
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68 | 'require_login_cms' => false, |
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69 | 'required_permission' => false, |
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70 | 'include_js' => true, |
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71 | 'use_gravatar' => false, |
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72 | 'gravatar_size' => 80, |
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73 | 'gravatar_default' => 'identicon', |
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74 | 'gravatar_rating' => 'g', |
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75 | 'show_comments_when_disabled' => false, |
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76 | 'order_comments_by' => '"Created" DESC', |
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77 | 'order_replies_by' => false, |
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78 | 'comments_per_page' => 10, |
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79 | 'comments_holder_id' => 'comments-holder', |
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80 | 'comment_permalink_prefix' => 'comment-', |
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81 | 'require_moderation' => false, |
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82 | 'require_moderation_nonmembers' => false, |
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83 | 'require_moderation_cms' => false, |
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84 | 'frontend_moderation' => false, |
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85 | 'frontend_spam' => false, |
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86 | 'html_allowed' => false, |
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87 | 'html_allowed_elements' => ['a', 'img', 'i', 'b'], |
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88 | 'use_preview' => false, |
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89 | 'nested_comments' => false, |
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90 | 'nested_depth' => 2, |
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91 | ]; |
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92 | |||
93 | /** |
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94 | * @var array |
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95 | */ |
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96 | private static $db = [ |
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97 | 'ProvideComments' => 'Boolean', |
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98 | 'ModerationRequired' => 'Enum(\'None,Required,NonMembersOnly\',\'None\')', |
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99 | 'CommentsRequireLogin' => 'Boolean', |
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100 | ]; |
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101 | |||
102 | /** |
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103 | * {@inheritDoc} |
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104 | */ |
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105 | private static $has_many = [ |
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106 | 'Commments' => Comment::class . '.Parent' |
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107 | ]; |
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108 | |||
109 | /** |
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110 | * CMS configurable options should default to the config values, but respect |
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111 | * default values specified by the object |
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112 | */ |
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113 | public function populateDefaults() |
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114 | { |
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115 | $defaults = $this->owner->config()->get('defaults'); |
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116 | |||
117 | // Set if comments should be enabled by default |
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118 | if (isset($defaults['ProvideComments'])) { |
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119 | $this->owner->ProvideComments = $defaults['ProvideComments']; |
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120 | } else { |
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121 | $this->owner->ProvideComments = $this->owner->getCommentsOption('enabled') ? 1 : 0; |
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122 | } |
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123 | |||
124 | // If moderation options should be configurable via the CMS then |
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125 | if (isset($defaults['ModerationRequired'])) { |
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126 | $this->owner->ModerationRequired = $defaults['ModerationRequired']; |
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127 | } elseif ($this->owner->getCommentsOption('require_moderation')) { |
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128 | $this->owner->ModerationRequired = 'Required'; |
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129 | } elseif ($this->owner->getCommentsOption('require_moderation_nonmembers')) { |
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130 | $this->owner->ModerationRequired = 'NonMembersOnly'; |
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131 | } else { |
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132 | $this->owner->ModerationRequired = 'None'; |
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133 | } |
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134 | |||
135 | // Set login required |
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136 | if (isset($defaults['CommentsRequireLogin'])) { |
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137 | $this->owner->CommentsRequireLogin = $defaults['CommentsRequireLogin']; |
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138 | } else { |
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139 | $this->owner->CommentsRequireLogin = $this->owner->getCommentsOption('require_login') ? 1 : 0; |
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140 | } |
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141 | } |
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142 | |||
143 | |||
144 | /** |
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145 | * If this extension is applied to a {@link SiteTree} record then |
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146 | * append a Provide Comments checkbox to allow authors to trigger |
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147 | * whether or not to display comments |
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148 | * |
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149 | * @todo Allow customization of other {@link Commenting} configuration |
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150 | * |
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151 | * @param FieldList $fields |
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152 | */ |
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153 | public function updateSettingsFields(FieldList $fields) |
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154 | { |
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155 | $options = FieldGroup::create()->setTitle(_t(__CLASS__ . '.COMMENTOPTIONS', 'Comments')); |
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156 | |||
157 | // Check if enabled setting should be cms configurable |
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158 | if ($this->owner->getCommentsOption('enabled_cms')) { |
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159 | $options->push(CheckboxField::create('ProvideComments', _t( |
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160 | 'SilverStripe\\Comments\\Model\\Comment.ALLOWCOMMENTS', |
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161 | 'Allow comments' |
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162 | ))); |
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163 | } |
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164 | |||
165 | // Check if we should require users to login to comment |
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166 | if ($this->owner->getCommentsOption('require_login_cms')) { |
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167 | $options->push( |
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168 | CheckboxField::create( |
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169 | 'CommentsRequireLogin', |
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170 | _t('Comments.COMMENTSREQUIRELOGIN', 'Require login to comment') |
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171 | ) |
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172 | ); |
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173 | } |
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174 | |||
175 | if ($options->FieldList()->count()) { |
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176 | if ($fields->hasTabSet()) { |
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177 | $fields->addFieldsToTab('Root.Settings', $options); |
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178 | } else { |
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179 | $fields->push($options); |
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180 | } |
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181 | } |
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182 | |||
183 | // Check if moderation should be enabled via cms configurable |
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184 | if ($this->owner->getCommentsOption('require_moderation_cms')) { |
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185 | $moderationField = DropdownField::create( |
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186 | 'ModerationRequired', |
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187 | _t( |
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188 | __CLASS__ . '.COMMENTMODERATION', |
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189 | 'Comment Moderation' |
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190 | ), |
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191 | [ |
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192 | 'None' => _t(__CLASS__ . '.MODERATIONREQUIRED_NONE', 'No moderation required'), |
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193 | 'Required' => _t(__CLASS__ . '.MODERATIONREQUIRED_REQUIRED', 'Moderate all comments'), |
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194 | 'NonMembersOnly' => _t( |
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195 | __CLASS__ . '.MODERATIONREQUIRED_NONMEMBERSONLY', |
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196 | 'Only moderate non-members' |
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197 | ), |
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198 | ] |
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199 | ); |
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200 | if ($fields->hasTabSet()) { |
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201 | $fields->addFieldToTab('Root.Settings', $moderationField); |
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202 | } else { |
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203 | $fields->push($moderationField); |
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204 | } |
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205 | } |
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206 | } |
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207 | |||
208 | /** |
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209 | * Get comment moderation rules for this parent |
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210 | * |
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211 | * None: No moderation required |
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212 | * Required: All comments |
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213 | * NonMembersOnly: Only anonymous users |
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214 | * |
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215 | * @return string |
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216 | */ |
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217 | public function getModerationRequired() |
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218 | { |
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219 | if ($this->owner->getCommentsOption('require_moderation_cms')) { |
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220 | return $this->owner->getField('ModerationRequired'); |
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221 | } |
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222 | |||
223 | if ($this->owner->getCommentsOption('require_moderation')) { |
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224 | return 'Required'; |
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225 | } |
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226 | |||
227 | if ($this->owner->getCommentsOption('require_moderation_nonmembers')) { |
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228 | return 'NonMembersOnly'; |
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229 | } |
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230 | |||
231 | return 'None'; |
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232 | } |
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233 | |||
234 | /** |
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235 | * Determine if users must be logged in to post comments |
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236 | * |
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237 | * @return boolean |
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238 | */ |
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239 | public function getCommentsRequireLogin() |
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240 | { |
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241 | if ($this->owner->getCommentsOption('require_login_cms')) { |
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242 | return (bool) $this->owner->getField('CommentsRequireLogin'); |
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243 | } |
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244 | return (bool) $this->owner->getCommentsOption('require_login'); |
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245 | } |
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246 | |||
247 | /** |
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248 | * Returns the RelationList of all comments against this object. Can be used as a data source |
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249 | * for a gridfield with write access. |
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250 | * |
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251 | * @return DataList |
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252 | */ |
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253 | public function AllComments() |
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254 | { |
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255 | $order = $this->owner->getCommentsOption('order_comments_by'); |
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256 | $comments = Comment::get() |
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257 | ->filter('ParentID', $this->owner->ID) |
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258 | ->sort($order); |
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259 | $this->owner->extend('updateAllComments', $comments); |
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260 | return $comments; |
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261 | } |
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262 | |||
263 | /** |
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264 | * Returns all comments against this object, with with spam and unmoderated items excluded, for use in the frontend |
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265 | * |
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266 | * @return DataList |
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267 | */ |
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268 | public function AllVisibleComments() |
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269 | { |
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270 | $list = $this->AllComments(); |
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271 | |||
272 | // Filter spam comments for non-administrators if configured |
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273 | $showSpam = $this->owner->getCommentsOption('frontend_spam') && $this->owner->canModerateComments(); |
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274 | |||
275 | if (!$showSpam) { |
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276 | $list = $list->filter('IsSpam', 0); |
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277 | } |
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278 | |||
279 | // Filter un-moderated comments for non-administrators if moderation is enabled |
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280 | $showUnmoderated = ($this->owner->ModerationRequired === 'None') |
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281 | || ($this->owner->getCommentsOption('frontend_moderation') && $this->owner->canModerateComments()); |
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282 | if (!$showUnmoderated) { |
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283 | $list = $list->filter('Moderated', 1); |
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284 | } |
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285 | |||
286 | $this->owner->extend('updateAllVisibleComments', $list); |
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287 | return $list; |
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288 | } |
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289 | |||
290 | /** |
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291 | * Returns the root level comments, with spam and unmoderated items excluded, for use in the frontend |
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292 | * |
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293 | * @return DataList |
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294 | */ |
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295 | public function Comments() |
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296 | { |
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297 | $list = $this->AllVisibleComments(); |
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298 | |||
299 | // If nesting comments, only show root level |
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300 | if ($this->owner->getCommentsOption('nested_comments')) { |
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301 | $list = $list->filter('ParentCommentID', 0); |
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302 | } |
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303 | |||
304 | $this->owner->extend('updateComments', $list); |
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305 | return $list; |
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306 | } |
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307 | |||
308 | /** |
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309 | * Returns a paged list of the root level comments, with spam and unmoderated items excluded, |
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310 | * for use in the frontend |
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311 | * |
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312 | * @return PaginatedList |
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313 | */ |
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314 | public function PagedComments() |
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315 | { |
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316 | $list = $this->Comments(); |
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317 | |||
318 | // Add pagination |
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319 | $list = PaginatedList::create($list, Controller::curr()->getRequest()); |
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320 | $list->setPaginationGetVar('commentsstart' . $this->owner->ID); |
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321 | $list->setPageLength($this->owner->getCommentsOption('comments_per_page')); |
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322 | |||
323 | $this->owner->extend('updatePagedComments', $list); |
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324 | return $list; |
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325 | } |
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326 | |||
327 | /** |
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328 | * Determine if comments are enabled for this instance |
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329 | * |
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330 | * @return boolean |
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331 | */ |
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332 | public function getCommentsEnabled() |
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333 | { |
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334 | // Don't display comments form for pseudo-pages (such as the login form) |
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335 | if (!$this->owner->exists()) { |
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336 | return false; |
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337 | } |
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338 | |||
339 | // Determine which flag should be used to determine if this is enabled |
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340 | if ($this->owner->getCommentsOption('enabled_cms')) { |
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341 | return (bool) $this->owner->ProvideComments; |
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342 | } |
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343 | |||
344 | return (bool) $this->owner->getCommentsOption('enabled'); |
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345 | } |
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346 | |||
347 | /** |
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348 | * Get the HTML ID for the comment holder in the template |
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349 | * |
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350 | * @return string |
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351 | */ |
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352 | public function getCommentHolderID() |
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353 | { |
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354 | return $this->owner->getCommentsOption('comments_holder_id'); |
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355 | } |
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356 | |||
357 | /** |
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358 | * Permission codes required in order to post (or empty if none required) |
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359 | * |
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360 | * @return string|array Permission or list of permissions, if required |
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361 | */ |
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362 | public function getPostingRequiredPermission() |
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363 | { |
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364 | return $this->owner->getCommentsOption('required_permission'); |
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365 | } |
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366 | |||
367 | /** |
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368 | * Determine if a user can post comments on this item |
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369 | * |
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370 | * @param Member $member Member to check |
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371 | * |
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372 | * @return boolean |
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373 | */ |
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374 | public function canPostComment($member = null) |
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375 | { |
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376 | // Deny if not enabled for this object |
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377 | if (!$this->owner->CommentsEnabled) { |
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378 | return false; |
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379 | } |
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380 | |||
381 | if (!$this->owner->canView($member)) { |
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382 | // deny if current user cannot view the underlying record. |
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383 | return false; |
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384 | } |
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385 | |||
386 | // Check if member is required |
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387 | $requireLogin = $this->owner->CommentsRequireLogin; |
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388 | if (!$requireLogin) { |
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389 | return true; |
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390 | } |
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391 | |||
392 | // Check member is logged in |
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393 | $member = $member ?: Security::getCurrentUser(); |
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394 | if (!$member) { |
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395 | return false; |
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396 | } |
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397 | |||
398 | // If member required check permissions |
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399 | $requiredPermission = $this->owner->PostingRequiredPermission; |
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400 | if ($requiredPermission && !Permission::checkMember($member, $requiredPermission)) { |
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401 | return false; |
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402 | } |
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403 | |||
404 | return true; |
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405 | } |
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406 | |||
407 | /** |
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408 | * Determine if this member can moderate comments in the CMS |
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409 | * |
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410 | * @param Member $member |
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411 | * |
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412 | * @return boolean |
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413 | */ |
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414 | public function canModerateComments($member = null) |
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415 | { |
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416 | // Deny if not enabled for this object |
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417 | if (!$this->owner->CommentsEnabled) { |
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418 | return false; |
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419 | } |
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420 | |||
421 | // Fallback to can-edit |
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422 | return $this->owner->canEdit($member); |
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423 | } |
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424 | |||
425 | /** |
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426 | * Gets the RSS link to all comments |
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427 | * |
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428 | * @return string |
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429 | */ |
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430 | public function getCommentRSSLink() |
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431 | { |
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432 | return Director::absoluteURL('comments/rss'); |
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433 | } |
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434 | |||
435 | /** |
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436 | * Get the RSS link to all comments on this page |
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437 | * |
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438 | * @return string |
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439 | */ |
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440 | public function getCommentRSSLinkPage() |
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441 | { |
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442 | return Controller::join_links( |
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443 | $this->getCommentRSSLink(), |
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444 | str_replace('\\', '-', get_class($this->owner)), |
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445 | $this->owner->ID |
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446 | ); |
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447 | } |
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448 | |||
449 | /** |
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450 | * Comments interface for the front end. Includes the CommentAddForm and the composition |
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451 | * of the comments display. |
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452 | * |
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453 | * To customize the html see templates/CommentInterface.ss or extend this function with |
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454 | * your own extension. |
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455 | * |
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456 | * @todo Cleanup the passing of all this configuration based functionality |
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457 | * |
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458 | * @see docs/en/Extending |
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459 | */ |
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460 | public function CommentsForm() |
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461 | { |
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462 | // Check if enabled |
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463 | $enabled = $this->getCommentsEnabled(); |
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464 | if ($enabled && $this->owner->getCommentsOption('include_js')) { |
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465 | Requirements::javascript('//code.jquery.com/jquery-3.3.1.min.js'); |
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466 | Requirements::javascript('silverstripe/comments:thirdparty/jquery-validate/jquery.validate.min.js'); |
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467 | Requirements::javascript('silverstripe/admin:client/dist/js/i18n.js'); |
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468 | Requirements::add_i18n_javascript('silverstripe/comments:javascript/lang'); |
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469 | Requirements::javascript('silverstripe/comments:javascript/CommentsInterface.js'); |
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470 | } |
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471 | |||
472 | $controller = CommentingController::create(); |
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473 | $controller->setOwnerRecord($this->owner); |
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474 | $controller->setParentClass($this->owner->getClassName()); |
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475 | $controller->setOwnerController(Controller::curr()); |
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476 | |||
477 | $session = Controller::curr()->getRequest()->getSession(); |
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478 | $moderatedSubmitted = $session->get('CommentsModerated'); |
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479 | $session->clear('CommentsModerated'); |
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480 | |||
481 | $form = ($enabled) ? $controller->CommentsForm() : false; |
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482 | |||
483 | // a little bit all over the show but to ensure a slightly easier upgrade for users |
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484 | // return back the same variables as previously done in comments |
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485 | return $this |
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486 | ->owner |
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487 | ->customise([ |
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488 | 'AddCommentForm' => $form, |
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489 | 'ModeratedSubmitted' => $moderatedSubmitted, |
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490 | ]) |
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491 | ->renderWith('CommentsInterface'); |
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492 | } |
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493 | |||
494 | /** |
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495 | * Returns whether this extension instance is attached to a {@link SiteTree} object |
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496 | * |
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497 | * @return bool |
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498 | */ |
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499 | public function attachedToSiteTree() |
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500 | { |
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501 | $class = $this->owner->baseClass(); |
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502 | |||
503 | return (is_subclass_of($class, SiteTree::class)) || ($class == SiteTree::class); |
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504 | } |
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505 | |||
506 | /** |
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507 | * Get the commenting option for this object. |
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508 | * |
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509 | * This can be overridden in any instance or extension to customise the |
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510 | * option available. |
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511 | * |
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512 | * @param string $key |
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513 | * |
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514 | * @return mixed Result if the setting is available, or null otherwise |
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515 | */ |
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516 | public function getCommentsOption($key) |
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517 | { |
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518 | $settings = $this->getCommentsOptions(); |
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519 | $value = null; |
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520 | |||
521 | if (isset($settings[$key])) { |
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522 | $value = $settings[$key]; |
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523 | } |
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524 | |||
525 | // To allow other extensions to customise this option |
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526 | if ($this->owner) { |
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527 | $this->owner->extend('updateCommentsOption', $key, $value); |
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528 | } |
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529 | |||
530 | return $value; |
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531 | } |
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532 | |||
533 | /** |
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534 | * @return array |
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535 | */ |
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536 | public function getCommentsOptions() |
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537 | { |
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538 | if ($this->owner) { |
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539 | $settings = $this->owner->config()->get('comments'); |
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540 | } else { |
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541 | $settings = Config::inst()->get(__CLASS__, 'comments'); |
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542 | } |
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543 | |||
544 | return $settings; |
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545 | } |
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546 | |||
547 | /** |
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548 | * Add moderation functions to the current fieldlist |
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549 | * |
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550 | * @param FieldList $fields |
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551 | */ |
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552 | protected function updateModerationFields(FieldList $fields) |
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553 | { |
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554 | Requirements::css('silverstripe/comments:css/cms.css'); |
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555 | |||
556 | $newComments = $this->owner->AllComments()->filter('Moderated', 0); |
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557 | |||
558 | $newGrid = CommentsGridField::create( |
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559 | 'NewComments', |
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560 | _t('CommentsAdmin.NewComments', 'New'), |
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561 | $newComments, |
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562 | CommentsGridFieldConfig::create() |
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563 | ); |
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564 | |||
565 | $approvedComments = $this->owner->AllComments()->filter('Moderated', 1)->filter('IsSpam', 0); |
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566 | |||
567 | $approvedGrid = new CommentsGridField( |
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568 | 'ApprovedComments', |
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569 | _t('CommentsAdmin.Comments', 'Approved'), |
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570 | $approvedComments, |
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571 | CommentsGridFieldConfig::create() |
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572 | ); |
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573 | |||
574 | $spamComments = $this->owner->AllComments()->filter('Moderated', 1)->filter('IsSpam', 1); |
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575 | |||
576 | $spamGrid = CommentsGridField::create( |
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577 | 'SpamComments', |
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578 | _t('CommentsAdmin.SpamComments', 'Spam'), |
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579 | $spamComments, |
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580 | CommentsGridFieldConfig::create() |
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581 | ); |
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582 | |||
583 | $newCount = '(' . count($newComments) . ')'; |
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584 | $approvedCount = '(' . count($approvedComments) . ')'; |
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585 | $spamCount = '(' . count($spamComments) . ')'; |
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586 | |||
587 | if ($fields->hasTabSet()) { |
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588 | $tabs = TabSet::create( |
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589 | 'Comments', |
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590 | Tab::create( |
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591 | 'CommentsNewCommentsTab', |
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592 | _t('SilverStripe\\Comments\\Admin\\CommentAdmin.NewComments', 'New') . ' ' . $newCount, |
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593 | $newGrid |
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594 | ), |
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595 | Tab::create( |
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596 | 'CommentsCommentsTab', |
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597 | _t('SilverStripe\\Comments\\Admin\\CommentAdmin.Comments', 'Approved') . ' ' . $approvedCount, |
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598 | $approvedGrid |
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599 | ), |
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600 | Tab::create( |
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601 | 'CommentsSpamCommentsTab', |
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602 | _t('SilverStripe\\Comments\\Admin\\CommentAdmin.SpamComments', 'Spam') . ' ' . $spamCount, |
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603 | $spamGrid |
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604 | ) |
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605 | ); |
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606 | $tabs->setTitle(_t(__CLASS__ . '.COMMENTSTABSET', 'Comments')); |
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607 | |||
608 | $fields->addFieldToTab('Root', $tabs); |
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609 | } else { |
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610 | $fields->push($newGrid); |
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611 | $fields->push($approvedGrid); |
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612 | $fields->push($spamGrid); |
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613 | } |
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614 | } |
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615 | |||
616 | public function updateCMSFields(FieldList $fields) |
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617 | { |
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618 | // Disable moderation if not permitted |
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619 | if ($this->owner->canModerateComments()) { |
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620 | $this->updateModerationFields($fields); |
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621 | } |
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622 | |||
623 | // If this isn't a page we should merge the settings into the CMS fields |
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624 | if (!$this->attachedToSiteTree()) { |
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625 | $this->updateSettingsFields($fields); |
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626 | } |
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627 | } |
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628 | } |
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629 |