first attempt on Tags: relation in only from Tags to Proposal, with Tags

managing the relationship (also correct display on view)

app/models/Proposal.java

@@ -62,7 +62,7 @@ public static Proposal createAndSave(String title, String problem, String soluti
 		p.save();
 		return p;
 	}
-
+		
 	/**
 	 * @return Increments the number of upvotes and then returns the total number of downvotes.
 	 */
@@ -84,8 +84,8 @@ public int getScore() {
 		return upvotes - downvotes;
 	}
 
-
 	public String toString() {
-        return "Proposal(" + id + ") | title: " + title + " | proposer: " + proposer.email;
+        return "Proposal(id=" + id + ", title=" + title + ", proposer=" + proposer.email + ")";
     }
+
 }

app/models/Tag.java

@@ -0,0 +1,61 @@
+
+package models;
+
+import java.util.List;
+
+import javax.persistence.*;
+
+import play.db.ebean.*;
+
+import com.avaje.ebean.*;
+
+/**
+ * A Tag is a subject/theme that classifies a specimen (like a Proposal).
+ * Its main objective is to catalog/group similar specimens, easing their
+ * search.
+ */
+@Entity
+public class Tag extends Model {
+
+	@Id
+	public String name;
+	public String desc;
+	@ManyToMany
+	public List<Proposal> taggedProposals;
+
+	/**
+	 * Finder
+	 */
+	public static Finder<String, Tag> find = new Finder<String, Tag>(
+			String.class, Tag.class);
+
+	/**
+	 * Constructor
+	 * @param name
+	 * @param description
+	 */
+	public Tag(String name, String description) {
+		this.name = name;
+		this.desc = description;
+	}
+
+	/**
+	 * @return All proposals tagged with that Tag
+	 */
+    public List<Proposal> getTaggedProposals() {
+    	return taggedProposals;
+    }
+
+    /**
+     * Tags a specific Proposal with the current Tag.
+     * @param prop Proposal object to tag
+     */
+    public void tagProposal(Proposal prop) {
+    	taggedProposals.add(prop);
+    }
+
+    public String toString() {
+        return "Tag (name=" + name +")";
+    }
+
+}

app/views/index.scala.html

@@ -1,4 +1,4 @@
-@(proposals: List[Proposal], users: List[User])
+@(proposals: List[Proposal], users: List[User], tags: List[Tag])
 
 @main("DCID") {
 
@@ -19,4 +19,22 @@ <h2>Proposals</h2>
         }
     </ul>
 
+    <h2>Tags</h2>
+    @for(tag <- tags) {
+        <h3>@tag.name</h3>
+        <p><em>@tag.desc</em></p>
+        <ul>
+            @for(prop <- tag.getTaggedProposals()) {
+                <li>@prop.title</li>
+            }
+        </ul>
+    }
+
+    <h2>Proposals + Tags</h2>
+    <ul>
+        @for(prop <- proposals) {
+
+        }
+    </ul>
+
 }

backlog.txt

@@ -1,82 +1,33 @@
 
-package models;
 
-import java.util.List;
 
-import javax.persistence.*;
 
-import play.db.ebean.*;
-
-import com.avaje.ebean.*;
-
-/**
- * A Tag is a subject or theme that classifies a specimen (like a
- * Proposal). Its main objective is to catalog/group similar specimens,
- * easing their search.
- */
-@Entity
-public class Tag extends Model {
-
-	@Id
-	public String name;
-	public String description;
-	@ManyToMany
-	public List<Proposal> taggedProposals;
-
-	/**
-	 * Finder
-	 */
-	public static Finder<String, Tag> find = new Finder<String, Tag>(
-			String.class, Tag.class);
-
-	/**
-	 * Constructor
-	 * @param name
-	 * @param description
-	 */
-	public Tag(String name, String description) {
-		this.name = name;
-		this.description = description;
-	}
-
-	public static Tag createAndSave(String name, String description) {
-		Tag t = new Tag(name, description);
-		t.save();
-		return t;
-	}
-
-	/**
-	 * @param tagId The name of a specific Tag
-	 * @return All proposals tagged with that Tag
-	 */
-    public List<Proposal> getTaggedProposals(String tagId) {
-    	return taggedProposals;
-    }
 
-    /**
-     * Tags a specific Proposal with the current Tag.
-     * @param proposalId Identifier of Proposal to tag
-     */
-    public void tagProposal(Long proposalId) {
-    	Proposal p = Proposal.find.where().eq("id", proposalId).findUnique();
-    	taggedProposals.add(p)
+//    /**
+//     * Tags a specific Proposal with the current Tag.
+//     * @param proposalId Identifier of Proposal to tag
+//     */
+//    public void tagProposal(Long proposalId) {
+//      Proposal p = Proposal.find.where().eq("id", proposalId).findUnique();
+//      taggedProposals.add(p)
+//    }
+
+
+/*
+    public static Tag findOrCreateByName(String name) { 
+        Tag tag = find.where().eq("name", name).findUnique();
+        if(tag == null) {
+            tag = new Tag(name, "No description."); // TODO i18d
+        }
+        return tag;
     }
-
-    public String toString() {
-        return "Tag(" + name +")";
-    }
-
-	/*
-	public static Tag findOrCreateByName(String name) {	
-	    Tag tag = find.where().eq("name", name).findUnique();
-	    if(tag == null) {
-	        tag = new Tag(name, "No description.");	// TODO i18d
-	    }
-	    return tag;
-	}
-	*/
+*/
 
-}
+//  public static Tag createAndSave(String name, String description) {
+//      Tag t = new Tag(name, description);
+//      t.save();
+//      return t;
+//  }
 
 
 /**

conf/evolutions/default/1.sql

@@ -17,33 +17,57 @@ create table proposal (
   constraint pk_proposal primary key (id))
 ;
 
+create table tag (
+  name                      varchar(255) not null,
+  desc                      varchar(255),
+  constraint pk_tag primary key (name))
+;
+
 create table user (
   email                     varchar(255) not null,
   name                      varchar(255),
   password                  varchar(255),
   constraint pk_user primary key (email))
 ;
 
+
+create table tag_proposal (
+  tag_name                       varchar(255) not null,
+  proposal_id                    bigint not null,
+  constraint pk_tag_proposal primary key (tag_name, proposal_id))
+;
 create sequence proposal_seq;
 
+create sequence tag_seq;
+
 create sequence user_seq;
 
 alter table proposal add constraint fk_proposal_proposer_1 foreign key (proposer_email) references user (email) on delete restrict on update restrict;
 create index ix_proposal_proposer_1 on proposal (proposer_email);
 
 
 
+alter table tag_proposal add constraint fk_tag_proposal_tag_01 foreign key (tag_name) references tag (name) on delete restrict on update restrict;
+
+alter table tag_proposal add constraint fk_tag_proposal_proposal_02 foreign key (proposal_id) references proposal (id) on delete restrict on update restrict;
+
 # --- !Downs
 
 SET REFERENTIAL_INTEGRITY FALSE;
 
 drop table if exists proposal;
 
+drop table if exists tag;
+
+drop table if exists tag_proposal;
+
 drop table if exists user;
 
 SET REFERENTIAL_INTEGRITY TRUE;
 
 drop sequence if exists proposal_seq;
 
+drop sequence if exists tag_seq;
+
 drop sequence if exists user_seq;
 

conf/test-data.yml

@@ -58,3 +58,16 @@
 
 
 # Tags
+
+- &tag1 !!models.Tag
+    name: Tecnologia
+    desc: Propostas que incluem a utilização de algum tipo de tecnologia digital.
+    taggedProposals:
+        - *prop1
+
+- &tag2 !!models.Tag
+    name: Ambiente
+    desc: Propostas que visam melhorar o ambiente e os espaços verdes.
+    taggedProposals:
+        - *prop2
+        - *prop3