1 | <?php |
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2 | |||
3 | namespace SilverStripe\CKANRegistry\Model\ResourceFilter; |
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4 | |||
5 | use InvalidArgumentException; |
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6 | use SilverStripe\CKANRegistry\Forms\PresentedOptionsField; |
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7 | use SilverStripe\CKANRegistry\Model\ResourceFilter; |
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8 | use SilverStripe\Forms\DropdownField; |
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9 | use SilverStripe\Forms\FieldList; |
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10 | |||
11 | /** |
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12 | * Provides a single select option for CKAN resources to be filtered by |
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13 | */ |
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14 | class Dropdown extends ResourceFilter |
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15 | { |
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16 | private static $db = [ |
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17 | 'Options' => 'Text', // JSON blob |
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18 | ]; |
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19 | |||
20 | private static $table_name = 'CKANFilter_Dropdown'; |
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21 | |||
22 | private static $singular_name = 'Dropdown'; |
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23 | |||
24 | protected $fieldType = DropdownField::class; |
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25 | |||
26 | public function getCMSFields() |
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27 | { |
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28 | $this->beforeUpdateCMSFields(function (FieldList $fields) { |
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29 | $fields->addFieldToTab('Root.Main', PresentedOptionsField::create( |
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30 | 'Options', |
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31 | $this->FilterFor, |
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32 | _t(__CLASS__ . '.OPTIONS', 'Presented options') |
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33 | )); |
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34 | }); |
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35 | |||
36 | return parent::getCMSFields(); |
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37 | } |
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38 | |||
39 | public function getClientConfig() |
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40 | { |
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41 | $config = parent::getClientConfig(); |
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42 | |||
43 | try { |
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44 | $config['options'] = $this->getConfiguredOptions(); |
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45 | } catch (InvalidArgumentException $e) { |
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46 | $config['options'] = []; |
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47 | } |
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48 | |||
49 | return $config; |
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50 | } |
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51 | |||
52 | /** |
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53 | * Get the options that have been configured for this dropdown by the CMS author. ie. parse the "Options" value |
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54 | * |
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55 | * @throws InvalidArgumentException When the configured "selectType" is unknown |
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56 | */ |
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57 | protected function getConfiguredOptions() |
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58 | { |
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59 | $spec = json_decode($this->Options, true) ?: []; |
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60 | |||
61 | if (!isset($spec['selectType'])) { |
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62 | return []; |
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63 | } |
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64 | |||
65 | $selectType = (int) $spec['selectType']; |
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66 | |||
67 | if ($selectType === PresentedOptionsField::SELECT_TYPE_ALL) { |
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68 | return $spec['selections']; |
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69 | } |
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70 | if ($selectType === PresentedOptionsField::SELECT_TYPE_CUSTOM) { |
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71 | return $spec['customOptions']; |
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72 | } |
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73 | |||
74 | throw new InvalidArgumentException('Unknown "selectType" is configured for ' . static::class); |
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75 | } |
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76 | } |
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77 |