add a custom field long choice basic

The `custom field long choice` aim to provide a way to deal with choices
with a big possibilities.

The `custom field long choice` allow :
- to persist different options in the database ;
- each option has a key, a text (translatable string), and eventually a
  parent, and an internal_key
- every key can be activate or not. If the parent is inactivated, all
  childs are inactivated
- the internal key have two purposes :
    - link to an external csv file, with their own key ;
    - add a special class to results, to allow custom layout.

Currently, the field exists, but some elements are missing :

- a script for CSV import
- possibility to select multiple items
- edition of options
- handle of option without parents
- tests are missing

Resources/config/doctrine/CustomFieldLongChoice.Option.orm.yml

@@ -0,0 +1,33 @@
+Chill\CustomFieldsBundle\Entity\CustomFieldLongChoice\Option:
+    type: entity
+    table: custom_field_long_choice_options
+    repositoryClass: Chill\CustomFieldsBundle\EntityRepository\CustomFieldLongChoice\OptionRepository
+    id:
+        id:
+            type: integer
+            id: true
+            generator: 
+                strategy: AUTO
+    fields:
+        key:
+            type: string
+            length: 15
+        text:
+            type: json_array
+        internalKey:
+            type: string
+            length: 50
+            column: internal_key
+        active:
+            type: boolean
+            default: true
+    oneToMany:
+        children:
+            targetEntity: Chill\CustomFieldsBundle\Entity\CustomFieldLongChoice\Option
+            mappedBy: parent
+    manyToOne:
+        parent:
+            targetEntity: Chill\CustomFieldsBundle\Entity\CustomFieldLongChoice\Option
+            inversedBy: children
+            nullable: true
+        

Resources/config/services.yml

@@ -107,4 +107,20 @@ services:
         calls:
             - [setContainer, ["@service_container"]]
         tags:
-            - { name: twig.extension }
+            - { name: twig.extension }
+            
+    chill.custom_field.custom_field_long_choice:
+        class: Chill\CustomFieldsBundle\CustomFields\CustomFieldLongChoice
+        arguments:
+            - "@chill.custom_field.custom_field_long_choice_option_repository"
+            - "@chill.main.helper.translatable_string"
+            - "@templating"
+        tags:
+            - { name: 'chill.custom_field', type: 'long_choice' }
+            
+    chill.custom_field.custom_field_long_choice_option_repository:
+        class: Chill\CustomFieldsBundle\EntityRepository\CustomFieldLongChoice\OptionRepository
+        factory: ["@doctrine", getRepository]
+        arguments:
+            - "Chill\CustomFieldsBundle\Entity\CustomFieldLongChoice\Option"
+        

Resources/migrations/Version20151210205610.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Application\Migrations;
+
+use Doctrine\DBAL\Migrations\AbstractMigration;
+use Doctrine\DBAL\Schema\Schema;
+
+/**
+ * Auto-generated Migration: Please modify to your needs!
+ */
+class Version20151210205610 extends AbstractMigration
+{
+    /**
+     * @param Schema $schema
+     */
+    public function up(Schema $schema)
+    {
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'postgresql', 'Migration can only be executed safely on \'postgresql\'.');
+
+        $this->addSql('CREATE SEQUENCE custom_field_long_choice_options_id_seq INCREMENT BY 1 MINVALUE 1 START 1');
+        $this->addSql('CREATE TABLE custom_field_long_choice_options (id INT NOT NULL, '
+                . 'parent_id INT DEFAULT NULL, '
+                . 'key VARCHAR(15) NOT NULL, '
+                . 'text jsonb NOT NULL, '
+                . 'active boolean NOT NULL,'
+                . 'internal_key VARCHAR(50) NOT NULL DEFAULT \'\', '
+                . 'PRIMARY KEY(id))');
+        $this->addSql('CREATE INDEX IDX_14BBB8E0727ACA70 ON custom_field_long_choice_options (parent_id)');
+        $this->addSql('ALTER TABLE custom_field_long_choice_options ADD CONSTRAINT cf_long_choice_self_referencing '
+                . 'FOREIGN KEY (parent_id) REFERENCES custom_field_long_choice_options (id) '
+                . 'NOT DEFERRABLE INITIALLY IMMEDIATE');
+        
+    }
+
+    /**
+     * @param Schema $schema
+     */
+    public function down(Schema $schema)
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'postgresql', 'Migration can only be executed safely on \'postgresql\'.');
+
+        $this->addSql('ALTER TABLE custom_field_long_choice_options DROP CONSTRAINT cf_long_choice_self_referencing');
+        $this->addSql('DROP SEQUENCE custom_field_long_choice_options_id_seq CASCADE');
+        $this->addSql('DROP TABLE custom_field_long_choice_options');
+    }
+}

Resources/translations/messages.fr.yml

@@ -84,3 +84,6 @@ Greater or equal than: Plus grand ou égal à
 Lesser or equal than: Plus petit ou égal à
 Precision: Précision
 Text after the field: Texte après le champ
+
+#custom field long choice
+Options key: Clé des options

Resources/views/CustomFieldsRendering/choice_long.html.twig

@@ -0,0 +1,11 @@
+{% if values|length > 0 %}
+    <ul class="custom_fields long_choice {% if values|length == 1 %}unique{% endif %}">
+        {%- for value in values -%}
+            <li class="long_choice_item long_choice-key-{{ value.key }} long_choice-ikey-{{ value.internalKey }} long_choice-parent-ikey-{{ value.parent.internalKey }}">
+                    <i class="fa fa-check-square-o"></i>&nbsp;{{ value.text|localize_translatable_string }}
+            </li>
+        {%- endfor -%}
+    </ul>
+{% else %}
+    <div class="custom_fields_choice long_choice empty">{{ 'None'|trans }}</div>
+{% endif %}