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Merge pull request #3917 from tomperr/feature/3910_er_unique_key

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feat(er): add unique key
This commit is contained in:
Knut Sveidqvist
2022-12-16 13:03:30 +01:00
committed by GitHub
parent 1bf636d697 c7f085a138
commit 3e64b439ce
5 changed files with 25 additions and 10 deletions
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14
demos/er.html
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@@ -57,6 +57,20 @@ erDiagram
number final_price number final_price
} }
</pre> </pre>
<hr />
<pre class="mermaid">
erDiagram
"HOSPITAL" {
int id PK
int doctor_id FK
string address UK
string name
string phone_number
string fax_number
}
</pre>
<hr />
<script src="./mermaid.js"></script> <script src="./mermaid.js"></script>
<script type="module"> <script type="module">

6
docs/syntax/entityRelationshipDiagram.md
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@@ -234,14 +234,14 @@ The `type` and `name` values must begin with an alphabetic character and may con
#### Attribute Keys and Comments #### Attribute Keys and Comments
Attributes may also have a `key` or comment defined. Keys can be "PK" or "FK", for Primary Key or Foreign Key. And a `comment` is defined by double quotes at the end of an attribute. Comments themselves cannot have double-quote characters in them. Attributes may also have a `key` or comment defined. Keys can be "PK", "FK" or "UK", for Primary Key, Foreign Key or Unique Key. And a `comment` is defined by double quotes at the end of an attribute. Comments themselves cannot have double-quote characters in them.
```mermaid-example ```mermaid-example
erDiagram erDiagram
CAR ||--o{ NAMED-DRIVER : allows CAR ||--o{ NAMED-DRIVER : allows
CAR { CAR {
string allowedDriver FK "The license of the allowed driver" string allowedDriver FK "The license of the allowed driver"
string registrationNumber string registrationNumber UK
string make string make
string model string model
string[] parts string[] parts
@@ -261,7 +261,7 @@ erDiagram
CAR ||--o{ NAMED-DRIVER : allows CAR ||--o{ NAMED-DRIVER : allows
CAR { CAR {
string allowedDriver FK "The license of the allowed driver" string allowedDriver FK "The license of the allowed driver"
string registrationNumber string registrationNumber UK
string make string make
string model string model
string[] parts string[] parts

2
packages/mermaid/src/diagrams/er/parser/erDiagram.jison
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@@ -29,7 +29,7 @@ accDescr\s*"{"\s* { this.begin("acc_descr_multili
"erDiagram" return 'ER_DIAGRAM'; "erDiagram" return 'ER_DIAGRAM';
"{" { this.begin("block"); return 'BLOCK_START'; } "{" { this.begin("block"); return 'BLOCK_START'; }
<block>\s+ /* skip whitespace in block */ <block>\s+ /* skip whitespace in block */
<block>\b((?:PK)|(?:FK))\b return 'ATTRIBUTE_KEY' <block>\b((?:PK)|(?:FK)|(?:UK))\b return 'ATTRIBUTE_KEY'
<block>(.*?)[~](.*?)*[~] return 'ATTRIBUTE_WORD'; <block>(.*?)[~](.*?)*[~] return 'ATTRIBUTE_WORD';
<block>[A-Za-z][A-Za-z0-9\-_\[\]\(\)]* return 'ATTRIBUTE_WORD' <block>[A-Za-z][A-Za-z0-9\-_\[\]\(\)]* return 'ATTRIBUTE_WORD'
<block>\"[^"]*\" return 'COMMENT'; <block>\"[^"]*\" return 'COMMENT';

9
packages/mermaid/src/diagrams/er/parser/erDiagram.spec.js
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@@ -176,17 +176,18 @@ describe('when parsing ER diagram it...', function () {
expect(entities[entity].attributes.length).toBe(1); expect(entities[entity].attributes.length).toBe(1);
}); });
it('should allow an entity with attribute starting with fk or pk and a comment', function () { it('should allow an entity with attribute starting with fk, pk or uk and a comment', function () {
const entity = 'BOOK'; const entity = 'BOOK';
const attribute1 = 'int fk_title FK'; const attribute1 = 'int fk_title FK';
const attribute2 = 'string pk_author PK'; const attribute2 = 'string pk_author PK';
const attribute3 = 'float pk_price PK "comment"'; const attribute3 = 'string uk_address UK';
const attribute4 = 'float pk_price PK "comment"';
erDiagram.parser.parse( erDiagram.parser.parse(
`erDiagram\n${entity} {\n${attribute1} \n\n${attribute2}\n${attribute3}\n}` `erDiagram\n${entity} {\n${attribute1} \n\n${attribute2}\n${attribute3}\n${attribute4}\n}`
); );
const entities = erDb.getEntities(); const entities = erDb.getEntities();
expect(entities[entity].attributes.length).toBe(3); expect(entities[entity].attributes.length).toBe(4);
}); });
it('should allow an entity with attribute that has a generic type', function () { it('should allow an entity with attribute that has a generic type', function () {

4
packages/mermaid/src/docs/syntax/entityRelationshipDiagram.md
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@@ -164,14 +164,14 @@ The `type` and `name` values must begin with an alphabetic character and may con
#### Attribute Keys and Comments #### Attribute Keys and Comments
Attributes may also have a `key` or comment defined. Keys can be "PK" or "FK", for Primary Key or Foreign Key. And a `comment` is defined by double quotes at the end of an attribute. Comments themselves cannot have double-quote characters in them. Attributes may also have a `key` or comment defined. Keys can be "PK", "FK" or "UK", for Primary Key, Foreign Key or Unique Key. And a `comment` is defined by double quotes at the end of an attribute. Comments themselves cannot have double-quote characters in them.
```mermaid-example ```mermaid-example
erDiagram erDiagram
CAR ||--o{ NAMED-DRIVER : allows CAR ||--o{ NAMED-DRIVER : allows
CAR { CAR {
string allowedDriver FK "The license of the allowed driver" string allowedDriver FK "The license of the allowed driver"
string registrationNumber string registrationNumber UK
string make string make
string model string model
string[] parts string[] parts