質問編集履歴
1
その他のコードを追加しました
test
CHANGED
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File without changes
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test
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@@ -4,7 +4,7 @@
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4
4
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5
5
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# エラー内容
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6
6
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7
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-
xxx
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7
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+
xxx/app/views/trees/show.html.slim
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8
8
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9
9
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```
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10
10
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@@ -72,6 +72,108 @@
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72
72
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73
73
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74
74
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75
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+
# その他のコード
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76
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+
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77
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+
xxx/app/models/tree.rb
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78
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+
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79
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```
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80
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+
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81
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+
class Tree < ApplicationRecord
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82
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+
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83
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validates :title, presence:true
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84
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+
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85
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86
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87
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belongs_to :user
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88
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89
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has_many :responses
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90
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91
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has_many :tree_categories, dependent: :destroy
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92
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+
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93
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has_many :categories, through: :tree_category, dependent: :destroy
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94
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+
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95
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end
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96
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+
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97
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```
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98
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+
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99
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100
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+
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101
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+
xxx/app/models/tree_category.rb
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102
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+
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103
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```
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104
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+
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105
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+
class TreeCategory < ApplicationRecord
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106
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+
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107
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belongs_to :tree
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108
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+
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109
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belongs_to :category
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110
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+
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111
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end
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112
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+
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113
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```
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114
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+
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115
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+
xxx/app/models/category.rb
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116
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+
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117
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```
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118
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119
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class Category < ApplicationRecord
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120
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121
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has_many :tree_categories, dependent: :destroy
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122
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123
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has_many :trees, through: :tree_categories, dependent: :destroy
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124
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+
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125
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end
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126
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127
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```
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128
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129
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130
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+
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131
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+
app/controllers/trees_controller.rb
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132
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+
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133
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```
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134
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135
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class TreesController < ApplicationController
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136
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137
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138
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139
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...
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140
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141
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142
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143
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def show
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144
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145
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@tree = Tree.find(params[:id])
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146
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147
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@response = Response.new(:tree_id => params[:id])
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148
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+
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149
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@responses = @tree.responses.all
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150
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+
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151
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end
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152
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+
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153
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+
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154
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+
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155
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...
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156
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+
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157
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+
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158
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+
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159
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private
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160
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161
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162
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163
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def tree_params
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164
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+
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165
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params.require(:tree).permit(:title)
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166
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+
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167
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+
end
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168
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+
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169
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end
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170
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+
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171
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```
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172
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+
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173
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+
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174
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+
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175
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+
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176
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+
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75
177
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# 推測される原因
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76
178
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77
179
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collection_check_boxesの文法（collection_check_boxes(object, method, collection, value_method, text_method, options = {}, html_options = {}, &block)）の引数text_methodに:nameを指定したつもりですが、railsが理解していないのではないかと思います。
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