Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like HasRoles often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use HasRoles, and based on these observations, apply Extract Interface, too.
1 | <?php |
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11 | trait HasRoles |
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12 | { |
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13 | use HasPermissions; |
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14 | |||
15 | private $roleClass; |
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16 | |||
17 | View Code Duplication | public static function bootHasRoles() |
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27 | |||
28 | public function getRoleClass() |
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36 | |||
37 | /** |
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38 | * A model may have multiple roles. |
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39 | */ |
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40 | public function roles(): BelongsToMany |
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50 | |||
51 | /** |
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52 | * Scope the model query to certain roles only. |
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53 | * |
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54 | * @param \Illuminate\Database\Eloquent\Builder $query |
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55 | * @param string|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
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56 | * @param string $guard |
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57 | * |
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58 | * @return \Illuminate\Database\Eloquent\Builder |
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59 | */ |
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60 | public function scopeRole(Builder $query, $roles, $guard = null): Builder |
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61 | { |
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62 | if ($roles instanceof Collection) { |
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63 | $roles = $roles->all(); |
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64 | } |
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65 | |||
66 | if (! is_array($roles)) { |
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67 | $roles = [$roles]; |
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68 | } |
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69 | |||
70 | $roles = array_map(function ($role) use ($guard) { |
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71 | if ($role instanceof Role) { |
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72 | return $role; |
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73 | } |
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74 | |||
75 | $method = is_numeric($role) ? 'findById' : 'findByName'; |
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76 | $guard = $guard ?: $this->getDefaultGuardName(); |
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77 | |||
78 | return $this->getRoleClass()->{$method}($role, $guard); |
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79 | }, $roles); |
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80 | |||
81 | return $query->whereHas('roles', function (Builder $subQuery) use ($roles) { |
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82 | $subQuery->whereIn(config('permission.table_names.roles').'.id', \array_column($roles, 'id')); |
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83 | }); |
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84 | } |
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85 | |||
86 | /** |
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87 | * Assign the given role to the model. |
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88 | * |
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89 | * @param array|string|\Spatie\Permission\Contracts\Role ...$roles |
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90 | * |
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91 | * @return $this |
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92 | */ |
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93 | View Code Duplication | public function assignRole(...$roles) |
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94 | { |
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95 | $roles = collect($roles) |
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96 | ->flatten() |
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97 | ->map(function ($role) { |
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98 | if (empty($role)) { |
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99 | return false; |
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100 | } |
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101 | |||
102 | return $this->getStoredRole($role); |
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103 | }) |
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104 | ->filter(function ($role) { |
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105 | return $role instanceof Role; |
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106 | }) |
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107 | ->each(function ($role) { |
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108 | $this->ensureModelSharesGuard($role); |
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109 | }) |
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110 | ->map->id |
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111 | ->all(); |
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112 | |||
113 | $model = $this->getModel(); |
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114 | |||
115 | if ($model->exists) { |
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116 | $this->roles()->sync($roles, false); |
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117 | $model->load('roles'); |
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118 | } else { |
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119 | $class = \get_class($model); |
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120 | |||
121 | $class::saved( |
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122 | function ($object) use ($roles, $model) { |
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123 | static $modelLastFiredOn; |
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124 | if ($modelLastFiredOn !== null && $modelLastFiredOn === $model) { |
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125 | return; |
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126 | } |
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127 | $object->roles()->sync($roles, false); |
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128 | $object->load('roles'); |
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129 | $modelLastFiredOn = $object; |
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130 | }); |
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131 | } |
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132 | |||
133 | $this->forgetCachedPermissions(); |
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134 | |||
135 | return $this; |
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136 | } |
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137 | |||
138 | /** |
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139 | * Revoke the given role from the model. |
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140 | * |
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141 | * @param string|\Spatie\Permission\Contracts\Role $role |
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142 | */ |
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143 | public function removeRole($role) |
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144 | { |
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145 | $this->roles()->detach($this->getStoredRole($role)); |
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146 | |||
147 | $this->load('roles'); |
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148 | |||
149 | $this->forgetCachedPermissions(); |
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150 | |||
151 | return $this; |
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152 | } |
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153 | |||
154 | /** |
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155 | * Remove all current roles and set the given ones. |
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156 | * |
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157 | * @param array|\Spatie\Permission\Contracts\Role|string ...$roles |
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158 | * |
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159 | * @return $this |
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160 | */ |
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161 | public function syncRoles(...$roles) |
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167 | |||
168 | /** |
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169 | * Determine if the model has (one of) the given role(s). |
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170 | * |
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171 | * @param string|int|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
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172 | * @param string|null $guard |
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173 | * @return bool |
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174 | */ |
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175 | public function hasRole($roles, string $guard = null): bool |
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176 | { |
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177 | View Code Duplication | if (is_string($roles) && false !== strpos($roles, '|')) { |
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178 | $roles = $this->convertPipeToArray($roles); |
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179 | } |
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180 | |||
181 | View Code Duplication | if (is_string($roles)) { |
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182 | return $guard |
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183 | ? $this->roles->where('guard_name', $guard)->contains('name', $roles) |
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184 | : $this->roles->contains('name', $roles); |
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185 | } |
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186 | |||
187 | View Code Duplication | if (is_int($roles)) { |
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188 | return $guard |
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189 | ? $this->roles->where('guard_name', $guard)->contains('id', $roles) |
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190 | : $this->roles->contains('id', $roles); |
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191 | } |
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192 | |||
193 | if ($roles instanceof Role) { |
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194 | return $this->roles->contains('id', $roles->id); |
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195 | } |
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196 | |||
197 | if (is_array($roles)) { |
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198 | foreach ($roles as $role) { |
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199 | if ($this->hasRole($role, $guard)) { |
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200 | return true; |
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201 | } |
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202 | } |
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203 | |||
204 | return false; |
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205 | } |
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206 | |||
207 | return $roles->intersect($guard ? $this->roles->where('guard_name', $guard) : $this->roles)->isNotEmpty(); |
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208 | } |
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209 | |||
210 | /** |
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211 | * Determine if the model has any of the given role(s). |
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212 | * |
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213 | * Alias to hasRole() but without Guard controls |
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214 | * |
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215 | * @param string|int|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
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216 | * |
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217 | * @return bool |
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218 | */ |
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219 | public function hasAnyRole(...$roles): bool |
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223 | |||
224 | /** |
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225 | * Determine if the model has all of the given role(s). |
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226 | * |
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227 | * @param string|array|\Spatie\Permission\Contracts\Role|\Illuminate\Support\Collection $roles |
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228 | * @param string|null $guard |
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229 | * @return bool |
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230 | */ |
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231 | public function hasAllRoles($roles, string $guard = null): bool |
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256 | |||
257 | /** |
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258 | * Return all permissions directly coupled to the model. |
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259 | */ |
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260 | public function getDirectPermissions(): Collection |
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264 | |||
265 | public function getRoleNames(): Collection |
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269 | |||
270 | protected function getStoredRole($role): Role |
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284 | |||
285 | protected function convertPipeToArray(string $pipeString) |
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306 | } |
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307 |
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.