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1 | <?php |
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2 | |||
3 | namespace Encore\Admin\Form\Field; |
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4 | |||
5 | use Encore\Admin\Facades\Admin; |
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6 | use Encore\Admin\Form\Field; |
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7 | use Illuminate\Contracts\Support\Arrayable; |
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8 | use Illuminate\Database\Eloquent\Model; |
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9 | use Illuminate\Support\Arr; |
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10 | use Illuminate\Support\Str; |
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11 | |||
12 | class Select extends Field |
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13 | { |
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14 | use CanCascadeFields; |
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15 | |||
16 | /** |
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17 | * @var array |
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18 | */ |
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19 | protected static $css = [ |
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20 | '/vendor/laravel-admin/AdminLTE/plugins/select2/select2.min.css', |
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21 | ]; |
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22 | |||
23 | /** |
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24 | * @var array |
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25 | */ |
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26 | protected static $js = [ |
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27 | '/vendor/laravel-admin/AdminLTE/plugins/select2/select2.full.min.js', |
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28 | ]; |
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29 | |||
30 | /** |
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31 | * @var array |
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32 | */ |
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33 | protected $groups = []; |
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34 | |||
35 | /** |
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36 | * @var array |
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37 | */ |
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38 | protected $config = []; |
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39 | |||
40 | /** |
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41 | * @var string |
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42 | */ |
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43 | protected $cascadeEvent = 'change'; |
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44 | |||
45 | /** |
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46 | * Set options. |
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47 | * |
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48 | * @param array|callable|string $options |
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49 | * |
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50 | * @return $this|mixed |
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51 | */ |
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52 | public function options($options = []) |
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53 | { |
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54 | // remote options |
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55 | if (is_string($options)) { |
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56 | // reload selected |
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57 | if (class_exists($options) && in_array(Model::class, class_parents($options))) { |
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58 | return $this->model(...func_get_args()); |
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59 | } |
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60 | |||
61 | return $this->loadRemoteOptions(...func_get_args()); |
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62 | } |
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63 | |||
64 | if ($options instanceof Arrayable) { |
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65 | $options = $options->toArray(); |
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66 | } |
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67 | |||
68 | if (is_callable($options)) { |
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69 | $this->options = $options; |
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70 | } else { |
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71 | $this->options = (array) $options; |
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72 | } |
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73 | |||
74 | return $this; |
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75 | } |
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76 | |||
77 | /** |
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78 | * @param array $groups |
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79 | */ |
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80 | |||
81 | /** |
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82 | * Set option groups. |
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83 | * |
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84 | * eg: $group = [ |
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85 | * [ |
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86 | * 'label' => 'xxxx', |
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87 | * 'options' => [ |
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88 | * 1 => 'foo', |
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89 | * 2 => 'bar', |
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90 | * ... |
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91 | * ], |
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92 | * ... |
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93 | * ] |
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94 | * |
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95 | * @param array $groups |
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96 | * |
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97 | * @return $this |
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98 | */ |
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99 | public function groups(array $groups) |
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100 | { |
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101 | $this->groups = $groups; |
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102 | |||
103 | return $this; |
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104 | } |
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105 | |||
106 | /** |
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107 | * Load options for other select on change. |
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108 | * |
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109 | * @param string $field |
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110 | * @param string $sourceUrl |
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111 | * @param string $idField |
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112 | * @param string $textField |
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113 | * |
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114 | * @return $this |
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115 | */ |
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116 | public function load($field, $sourceUrl, $idField = 'id', $textField = 'text', bool $allowClear = true) |
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117 | { |
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118 | if (Str::contains($field, '.')) { |
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119 | $field = $this->formatName($field); |
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120 | $class = str_replace(['[', ']'], '_', $field); |
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121 | } else { |
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122 | $class = $field; |
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123 | } |
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124 | |||
125 | $placeholder = json_encode([ |
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126 | 'id' => '', |
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127 | 'text' => trans('admin.choose'), |
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128 | ]); |
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129 | |||
130 | $strAllowClear = var_export($allowClear, true); |
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131 | |||
132 | $script = <<<EOT |
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133 | $(document).off('change', "{$this->getElementClassSelector()}"); |
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134 | $(document).on('change', "{$this->getElementClassSelector()}", function () { |
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135 | var target = $(this).closest('.fields-group').find(".$class"); |
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136 | $.get("$sourceUrl",{q : this.value}, function (data) { |
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137 | target.find("option").remove(); |
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138 | $(target).select2({ |
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139 | placeholder: $placeholder, |
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140 | allowClear: $strAllowClear, |
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141 | data: $.map(data, function (d) { |
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142 | d.id = d.$idField; |
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143 | d.text = d.$textField; |
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144 | return d; |
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145 | }) |
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146 | }); |
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147 | if (target.data('value')) { |
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148 | $(target).val(target.data('value')); |
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149 | } |
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150 | $(target).trigger('change'); |
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151 | }); |
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152 | }); |
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153 | EOT; |
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154 | |||
155 | Admin::script($script); |
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156 | |||
157 | return $this; |
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158 | } |
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159 | |||
160 | /** |
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161 | * Load options for other selects on change. |
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162 | * |
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163 | * @param array $fields |
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164 | * @param array $sourceUrls |
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165 | * @param string $idField |
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166 | * @param string $textField |
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167 | * |
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168 | * @return $this |
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169 | */ |
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170 | public function loads($fields = [], $sourceUrls = [], $idField = 'id', $textField = 'text', bool $allowClear = true) |
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171 | { |
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172 | $fieldsStr = implode('.', $fields); |
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173 | $urlsStr = implode('^', $sourceUrls); |
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174 | |||
175 | $placeholder = json_encode([ |
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176 | 'id' => '', |
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177 | 'text' => trans('admin.choose'), |
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178 | ]); |
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179 | |||
180 | $strAllowClear = var_export($allowClear, true); |
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181 | |||
182 | $script = <<<EOT |
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183 | var fields = '$fieldsStr'.split('.'); |
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184 | var urls = '$urlsStr'.split('^'); |
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185 | |||
186 | var refreshOptions = function(url, target) { |
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187 | $.get(url).then(function(data) { |
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188 | target.find("option").remove(); |
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189 | $(target).select2({ |
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190 | placeholder: $placeholder, |
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191 | allowClear: $strAllowClear, |
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192 | data: $.map(data, function (d) { |
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193 | d.id = d.$idField; |
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194 | d.text = d.$textField; |
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195 | return d; |
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196 | }) |
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197 | }).trigger('change'); |
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198 | }); |
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199 | }; |
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200 | |||
201 | $(document).off('change', "{$this->getElementClassSelector()}"); |
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202 | $(document).on('change', "{$this->getElementClassSelector()}", function () { |
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203 | var _this = this; |
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204 | var promises = []; |
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205 | |||
206 | fields.forEach(function(field, index){ |
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207 | var target = $(_this).closest('.fields-group').find('.' + fields[index]); |
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208 | promises.push(refreshOptions(urls[index] + "?q="+ _this.value, target)); |
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209 | }); |
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210 | }); |
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211 | EOT; |
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212 | |||
213 | Admin::script($script); |
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214 | |||
215 | return $this; |
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216 | } |
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217 | |||
218 | /** |
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219 | * Load options from current selected resource(s). |
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220 | * |
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221 | * @param string $model |
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222 | * @param string $idField |
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223 | * @param string $textField |
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224 | * |
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225 | * @return $this |
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226 | */ |
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227 | View Code Duplication | public function model($model, $idField = 'id', $textField = 'name') |
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228 | { |
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229 | if (!class_exists($model) |
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230 | || !in_array(Model::class, class_parents($model)) |
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231 | ) { |
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232 | throw new \InvalidArgumentException("[$model] must be a valid model class"); |
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233 | } |
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234 | |||
235 | $this->options = function ($value) use ($model, $idField, $textField) { |
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236 | if (empty($value)) { |
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237 | return []; |
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238 | } |
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239 | |||
240 | $resources = []; |
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241 | |||
242 | if (is_array($value)) { |
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243 | if (Arr::isAssoc($value)) { |
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244 | $resources[] = Arr::get($value, $idField); |
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245 | } else { |
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246 | $resources = array_column($value, $idField); |
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247 | } |
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248 | } else { |
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249 | $resources[] = $value; |
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250 | } |
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251 | |||
252 | return $model::find($resources)->pluck($textField, $idField)->toArray(); |
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253 | }; |
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254 | |||
255 | return $this; |
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256 | } |
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257 | |||
258 | /** |
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259 | * Load options from remote. |
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260 | * |
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261 | * @param string $url |
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262 | * @param array $parameters |
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263 | * @param array $options |
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264 | * |
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265 | * @return $this |
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266 | */ |
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267 | protected function loadRemoteOptions($url, $parameters = [], $options = []) |
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268 | { |
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269 | $ajaxOptions = [ |
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270 | 'url' => $url.'?'.http_build_query($parameters), |
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271 | ]; |
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272 | $configs = array_merge([ |
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273 | 'allowClear' => true, |
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274 | 'placeholder' => [ |
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275 | 'id' => '', |
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276 | 'text' => trans('admin.choose'), |
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277 | ], |
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278 | ], $this->config); |
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279 | |||
280 | $configs = json_encode($configs); |
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281 | $configs = substr($configs, 1, strlen($configs) - 2); |
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282 | |||
283 | $ajaxOptions = json_encode(array_merge($ajaxOptions, $options)); |
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284 | |||
285 | $this->script = <<<EOT |
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286 | |||
287 | $.ajax($ajaxOptions).done(function(data) { |
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288 | |||
289 | $("{$this->getElementClassSelector()}").each(function(index, element) { |
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290 | $(element).select2({ |
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291 | data: data, |
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292 | $configs |
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293 | }); |
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294 | var value = $(element).data('value') + ''; |
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295 | if (value) { |
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296 | value = value.split(','); |
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297 | $(element).select2('val', value); |
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298 | } |
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299 | }); |
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300 | }); |
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301 | |||
302 | EOT; |
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303 | |||
304 | return $this; |
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305 | } |
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306 | |||
307 | /** |
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308 | * Load options from ajax results. |
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309 | * |
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310 | * @param string $url |
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311 | * @param $idField |
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312 | * @param $textField |
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313 | * |
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314 | * @return $this |
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315 | */ |
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316 | View Code Duplication | public function ajax($url, $idField = 'id', $textField = 'text') |
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317 | { |
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318 | $configs = array_merge([ |
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319 | 'allowClear' => true, |
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320 | 'placeholder' => $this->label, |
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321 | 'minimumInputLength' => 1, |
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322 | ], $this->config); |
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323 | |||
324 | $configs = json_encode($configs); |
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325 | $configs = substr($configs, 1, strlen($configs) - 2); |
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326 | |||
327 | $this->script = <<<EOT |
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328 | |||
329 | $("{$this->getElementClassSelector()}").select2({ |
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330 | ajax: { |
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331 | url: "$url", |
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332 | dataType: 'json', |
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333 | delay: 250, |
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334 | data: function (params) { |
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335 | return { |
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336 | q: params.term, |
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337 | page: params.page |
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338 | }; |
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339 | }, |
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340 | processResults: function (data, params) { |
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341 | params.page = params.page || 1; |
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342 | |||
343 | return { |
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344 | results: $.map(data.data, function (d) { |
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345 | d.id = d.$idField; |
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346 | d.text = d.$textField; |
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347 | return d; |
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348 | }), |
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349 | pagination: { |
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350 | more: data.next_page_url |
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351 | } |
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352 | }; |
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353 | }, |
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354 | cache: true |
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355 | }, |
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356 | $configs, |
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357 | escapeMarkup: function (markup) { |
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358 | return markup; |
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359 | } |
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360 | }); |
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361 | |||
362 | EOT; |
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363 | |||
364 | return $this; |
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365 | } |
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366 | |||
367 | /** |
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368 | * Set config for select2. |
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369 | * |
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370 | * all configurations see https://select2.org/configuration/options-api |
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371 | * |
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372 | * @param string $key |
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373 | * @param mixed $val |
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374 | * |
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375 | * @return $this |
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376 | */ |
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377 | public function config($key, $val) |
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378 | { |
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379 | $this->config[$key] = $val; |
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380 | |||
381 | return $this; |
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382 | } |
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383 | |||
384 | /** |
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385 | * {@inheritdoc} |
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386 | */ |
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387 | public function readOnly() |
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388 | { |
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389 | //移除特定字段名称,增加MultipleSelect的修订 |
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390 | //没有特定字段名可以使多个readonly的JS代码片段被Admin::script的array_unique精简代码 |
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391 | $script = <<<'EOT' |
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392 | $("form select").on("select2:opening", function (e) { |
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393 | if($(this).attr('readonly') || $(this).is(':hidden')){ |
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394 | e.preventDefault(); |
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395 | } |
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396 | }); |
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397 | $(document).ready(function(){ |
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398 | $('select').each(function(){ |
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399 | if($(this).is('[readonly]')){ |
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400 | $(this).closest('.form-group').find('span.select2-selection__choice__remove').first().remove(); |
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401 | $(this).closest('.form-group').find('li.select2-search').first().remove(); |
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402 | $(this).closest('.form-group').find('span.select2-selection__clear').first().remove(); |
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403 | } |
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404 | }); |
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405 | }); |
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406 | EOT; |
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407 | Admin::script($script); |
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408 | |||
409 | return parent::readOnly(); |
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410 | } |
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411 | |||
412 | /** |
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413 | * {@inheritdoc} |
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414 | */ |
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415 | public function render() |
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416 | { |
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417 | $configs = array_merge([ |
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418 | 'allowClear' => true, |
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419 | 'placeholder' => [ |
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420 | 'id' => '', |
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421 | 'text' => $this->label, |
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422 | ], |
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423 | ], $this->config); |
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424 | |||
425 | $configs = json_encode($configs); |
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426 | |||
427 | if (empty($this->script)) { |
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428 | $this->script = "$(\"{$this->getElementClassSelector()}\").select2($configs);"; |
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429 | } |
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430 | |||
431 | if ($this->options instanceof \Closure) { |
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432 | if ($this->form) { |
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433 | $this->options = $this->options->bindTo($this->form->model()); |
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434 | } |
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435 | |||
436 | $this->options(call_user_func($this->options, $this->value, $this)); |
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437 | } |
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438 | |||
439 | $this->options = array_filter($this->options, 'strlen'); |
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440 | |||
441 | $this->addVariables([ |
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442 | 'options' => $this->options, |
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443 | 'groups' => $this->groups, |
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444 | ]); |
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445 | |||
446 | $this->addCascadeScript(); |
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447 | |||
448 | $this->attribute('data-value', implode(',', (array) $this->value())); |
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449 | |||
450 | return parent::render(); |
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451 | } |
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452 | } |
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453 |