ConditionalPromptSelector class

Prompt collection that goes through conditionals to select the appropriate prompt template.

You can use this to select a prompt template based on the type of language model (LLM vs. ChatModel) or the specific model used (e.g. GPT-4 vs Gemini Pro).

Example: Selecting a prompt based on the type of language model.

final prompt = PromptTemplate.fromTemplate('''
Use the following pieces of context to answer the question at the end.
{context}
Question: {question}
Helpful Answer:
''');
final chatPrompt = ChatPromptTemplate.fromTemplates([
  (ChatMessageRole.system, 'Use the following pieces of context to answer the users question.\n\n{context}'),
  (ChatMessageRole.human, '{question}'),
]);
final promptSelector = ConditionalPromptSelector(
  defaultPrompt: prompt,
  conditionals: [PromptCondition.isChatModel(chatPrompt)],
);
final prompt = promptSelector.getPrompt(llm);

Implemented types

• BasePromptSelector

Constructors

ConditionalPromptSelector({required BasePromptTemplate defaultPrompt, List<PromptCondition> conditionals = const []})

Prompt collection that goes through conditionals to select the appropriate prompt template.

const

Properties

conditionals → List<PromptCondition>

Conditional prompts to use.

final

defaultPrompt → BasePromptTemplate

Default prompt to use if no conditionals match.

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

getPrompt(BaseLanguageModel<Object, LanguageModelOptions, LanguageModelResult<Object>> llm) → BasePromptTemplate

Get default prompt for a language model.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited